nls: Update translations.

* doc/guix-cookbook.texi (Top): Mention Slovak.

1 files changed, 824 insertions, 792 deletions

diff --git a/po/doc/guix-cookbook.ko.po b/po/doc/guix-cookbook.ko.po
index 0e227a97a4..50840d2127 100644
--- a/po/doc/guix-cookbook.ko.po
+++ b/po/doc/guix-cookbook.ko.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: guix manual checkout\n"
 "Report-Msgid-Bugs-To: bug-guix@gnu.org\n"
-"POT-Creation-Date: 2023-01-10 03:18+0000\n"
+"POT-Creation-Date: 2023-05-07 03:18+0000\n"
 "PO-Revision-Date: 2022-11-26 11:04+0000\n"
 "Last-Translator: 김인수 <simmon@nplob.com>\n"
 "Language-Team: Korean <https://translate.fedoraproject.org/projects/guix/documentation-cookbook/ko/>\n"
@@ -113,7 +113,7 @@ msgstr "꾸러미 개인학습"
 
 #. type: chapter
 #: guix-git/doc/guix-cookbook.texi:80 guix-git/doc/guix-cookbook.texi:93
-#: guix-git/doc/guix-cookbook.texi:1388 guix-git/doc/guix-cookbook.texi:1389
+#: guix-git/doc/guix-cookbook.texi:1411 guix-git/doc/guix-cookbook.texi:1412
 #, no-wrap
 msgid "System Configuration"
 msgstr "시스템 설정"
@@ -125,7 +125,7 @@ msgstr "GNU 시스템 맞춤설정"
 
 #. type: chapter
 #: guix-git/doc/guix-cookbook.texi:80 guix-git/doc/guix-cookbook.texi:107
-#: guix-git/doc/guix-cookbook.texi:2736 guix-git/doc/guix-cookbook.texi:2737
+#: guix-git/doc/guix-cookbook.texi:2759 guix-git/doc/guix-cookbook.texi:2760
 #, no-wrap
 msgid "Containers"
 msgstr "컨테이너"
@@ -137,7 +137,7 @@ msgstr ""
 
 #. type: chapter
 #: guix-git/doc/guix-cookbook.texi:80 guix-git/doc/guix-cookbook.texi:112
-#: guix-git/doc/guix-cookbook.texi:3135 guix-git/doc/guix-cookbook.texi:3136
+#: guix-git/doc/guix-cookbook.texi:3158 guix-git/doc/guix-cookbook.texi:3159
 #, no-wrap
 msgid "Advanced package management"
 msgstr "향상된 꾸러미 관리"
@@ -149,7 +149,7 @@ msgstr "사용자에게 힘을!"
 
 #. type: chapter
 #: guix-git/doc/guix-cookbook.texi:80 guix-git/doc/guix-cookbook.texi:116
-#: guix-git/doc/guix-cookbook.texi:3534 guix-git/doc/guix-cookbook.texi:3535
+#: guix-git/doc/guix-cookbook.texi:3557 guix-git/doc/guix-cookbook.texi:3558
 #, no-wrap
 msgid "Environment management"
 msgstr "환경 관리"
@@ -161,7 +161,7 @@ msgstr "제어 환경"
 
 #. type: chapter
 #: guix-git/doc/guix-cookbook.texi:80 guix-git/doc/guix-cookbook.texi:120
-#: guix-git/doc/guix-cookbook.texi:3659 guix-git/doc/guix-cookbook.texi:3660
+#: guix-git/doc/guix-cookbook.texi:3682 guix-git/doc/guix-cookbook.texi:3683
 #, no-wrap
 msgid "Installing Guix on a Cluster"
 msgstr ""
@@ -172,8 +172,8 @@ msgid "High-performance computing."
 msgstr ""
 
 #. type: chapter
-#: guix-git/doc/guix-cookbook.texi:84 guix-git/doc/guix-cookbook.texi:4032
-#: guix-git/doc/guix-cookbook.texi:4033
+#: guix-git/doc/guix-cookbook.texi:84 guix-git/doc/guix-cookbook.texi:4055
+#: guix-git/doc/guix-cookbook.texi:4056
 #, no-wrap
 msgid "Acknowledgments"
 msgstr "감사의 말"
@@ -184,8 +184,8 @@ msgid "Thanks!"
 msgstr "감사합니다!"
 
 #. type: appendix
-#: guix-git/doc/guix-cookbook.texi:84 guix-git/doc/guix-cookbook.texi:4059
-#: guix-git/doc/guix-cookbook.texi:4060
+#: guix-git/doc/guix-cookbook.texi:84 guix-git/doc/guix-cookbook.texi:4082
+#: guix-git/doc/guix-cookbook.texi:4083
 #, no-wrap
 msgid "GNU Free Documentation License"
 msgstr "GNU 자유 문서 저작권"
@@ -196,8 +196,8 @@ msgid "The license of this document."
 msgstr "이 문서의 저작권."
 
 #. type: unnumbered
-#: guix-git/doc/guix-cookbook.texi:84 guix-git/doc/guix-cookbook.texi:4065
-#: guix-git/doc/guix-cookbook.texi:4066
+#: guix-git/doc/guix-cookbook.texi:84 guix-git/doc/guix-cookbook.texi:4088
+#: guix-git/doc/guix-cookbook.texi:4089
 #, no-wrap
 msgid "Concept Index"
 msgstr "개념 색인"
@@ -225,238 +225,238 @@ msgid "A tutorial on how to add packages to Guix."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:1412 guix-git/doc/guix-cookbook.texi:1413
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:1435 guix-git/doc/guix-cookbook.texi:1436
 #, no-wrap
 msgid "Auto-Login to a Specific TTY"
 msgstr "특정한 TTY로 자동-로그인"
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
 msgid "Automatically Login a User to a Specific TTY"
 msgstr "사용자를 특정한 TTY로 자동으로 로그인"
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:1457 guix-git/doc/guix-cookbook.texi:1458
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:1480 guix-git/doc/guix-cookbook.texi:1481
 #, no-wrap
 msgid "Customizing the Kernel"
 msgstr "커널을 최적화하기"
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
 msgid "Creating and using a custom Linux kernel on Guix System."
 msgstr "Guix 시스템에서 사용자 정의 리눅스 커널을 생성하고 사용하기."
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:1695 guix-git/doc/guix-cookbook.texi:1696
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:1718 guix-git/doc/guix-cookbook.texi:1719
 #, no-wrap
 msgid "Guix System Image API"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
 msgid "Customizing images to target specific platforms."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:1906 guix-git/doc/guix-cookbook.texi:1907
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:1929 guix-git/doc/guix-cookbook.texi:1930
 #, no-wrap
 msgid "Using security keys"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
 msgid "How to use security keys with Guix System."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:1965 guix-git/doc/guix-cookbook.texi:1966
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:1988 guix-git/doc/guix-cookbook.texi:1989
 #, no-wrap
 msgid "Connecting to Wireguard VPN"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
 msgid "Connecting to a Wireguard VPN."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:2042 guix-git/doc/guix-cookbook.texi:2043
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:2065 guix-git/doc/guix-cookbook.texi:2066
 #, no-wrap
 msgid "Customizing a Window Manager"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
 msgid "Handle customization of a Window manager on Guix System."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:2133 guix-git/doc/guix-cookbook.texi:2134
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:2156 guix-git/doc/guix-cookbook.texi:2157
 #, no-wrap
 msgid "Running Guix on a Linode Server"
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:2376 guix-git/doc/guix-cookbook.texi:2377
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:2399 guix-git/doc/guix-cookbook.texi:2400
 #, no-wrap
 msgid "Setting up a bind mount"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
 msgid "Setting up a bind mount in the file-systems definition."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:2425 guix-git/doc/guix-cookbook.texi:2426
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:2448 guix-git/doc/guix-cookbook.texi:2449
 #, no-wrap
 msgid "Getting substitutes from Tor"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
 msgid "Configuring Guix daemon to get substitutes through Tor."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:2489 guix-git/doc/guix-cookbook.texi:2490
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:2512 guix-git/doc/guix-cookbook.texi:2513
 #, no-wrap
 msgid "Setting up NGINX with Lua"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
 msgid "Configuring NGINX web-server to load Lua modules."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
-#: guix-git/doc/guix-cookbook.texi:2546 guix-git/doc/guix-cookbook.texi:2547
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
+#: guix-git/doc/guix-cookbook.texi:2569 guix-git/doc/guix-cookbook.texi:2570
 #, no-wrap
 msgid "Music Server with Bluetooth Audio"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1410
+#: guix-git/doc/guix-cookbook.texi:105 guix-git/doc/guix-cookbook.texi:1433
 msgid "Headless music player with Bluetooth output."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:110 guix-git/doc/guix-cookbook.texi:2763
-#: guix-git/doc/guix-cookbook.texi:2765 guix-git/doc/guix-cookbook.texi:2766
+#: guix-git/doc/guix-cookbook.texi:110 guix-git/doc/guix-cookbook.texi:2786
+#: guix-git/doc/guix-cookbook.texi:2788 guix-git/doc/guix-cookbook.texi:2789
 #, no-wrap
 msgid "Guix Containers"
 msgstr "Guix 컨테이너"
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:110 guix-git/doc/guix-cookbook.texi:2763
+#: guix-git/doc/guix-cookbook.texi:110 guix-git/doc/guix-cookbook.texi:2786
 msgid "Perfectly isolated environments"
 msgstr "완벽하게 격리된 환경"
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:110 guix-git/doc/guix-cookbook.texi:2763
-#: guix-git/doc/guix-cookbook.texi:2914 guix-git/doc/guix-cookbook.texi:2915
+#: guix-git/doc/guix-cookbook.texi:110 guix-git/doc/guix-cookbook.texi:2786
+#: guix-git/doc/guix-cookbook.texi:2937 guix-git/doc/guix-cookbook.texi:2938
 #, no-wrap
 msgid "Guix System Containers"
 msgstr "Guix 시스템 컨테이너"
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:110 guix-git/doc/guix-cookbook.texi:2763
+#: guix-git/doc/guix-cookbook.texi:110 guix-git/doc/guix-cookbook.texi:2786
 msgid "A system inside your system"
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:114 guix-git/doc/guix-cookbook.texi:3149
-#: guix-git/doc/guix-cookbook.texi:3151 guix-git/doc/guix-cookbook.texi:3152
+#: guix-git/doc/guix-cookbook.texi:114 guix-git/doc/guix-cookbook.texi:3172
+#: guix-git/doc/guix-cookbook.texi:3174 guix-git/doc/guix-cookbook.texi:3175
 #, no-wrap
 msgid "Guix Profiles in Practice"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:114 guix-git/doc/guix-cookbook.texi:3149
+#: guix-git/doc/guix-cookbook.texi:114 guix-git/doc/guix-cookbook.texi:3172
 msgid "Strategies for multiple profiles and manifests."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:118 guix-git/doc/guix-cookbook.texi:3542
-#: guix-git/doc/guix-cookbook.texi:3544 guix-git/doc/guix-cookbook.texi:3545
+#: guix-git/doc/guix-cookbook.texi:118 guix-git/doc/guix-cookbook.texi:3565
+#: guix-git/doc/guix-cookbook.texi:3567 guix-git/doc/guix-cookbook.texi:3568
 #, no-wrap
 msgid "Guix environment via direnv"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:118 guix-git/doc/guix-cookbook.texi:3542
+#: guix-git/doc/guix-cookbook.texi:118 guix-git/doc/guix-cookbook.texi:3565
 msgid "Setup Guix environment with direnv"
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3688
-#: guix-git/doc/guix-cookbook.texi:3690 guix-git/doc/guix-cookbook.texi:3691
+#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3711
+#: guix-git/doc/guix-cookbook.texi:3713 guix-git/doc/guix-cookbook.texi:3714
 #, no-wrap
 msgid "Setting Up a Head Node"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3688
+#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3711
 msgid "The node that runs the daemon."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3688
-#: guix-git/doc/guix-cookbook.texi:3786 guix-git/doc/guix-cookbook.texi:3787
+#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3711
+#: guix-git/doc/guix-cookbook.texi:3809 guix-git/doc/guix-cookbook.texi:3810
 #, no-wrap
 msgid "Setting Up Compute Nodes"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3688
+#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3711
 msgid "Client nodes."
 msgstr ""
 
 #. type: node
-#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3688
-#: guix-git/doc/guix-cookbook.texi:3872
+#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3711
+#: guix-git/doc/guix-cookbook.texi:3895
 #, no-wrap
 msgid "Cluster Network Access"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3688
+#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3711
 msgid "Dealing with network access restrictions."
 msgstr ""
 
 #. type: node
-#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3688
-#: guix-git/doc/guix-cookbook.texi:3958
+#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3711
+#: guix-git/doc/guix-cookbook.texi:3981
 #, no-wrap
 msgid "Cluster Disk Usage"
 msgstr ""
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3688
+#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3711
 msgid "Disk usage considerations."
 msgstr ""
 
 #. type: node
-#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3688
-#: guix-git/doc/guix-cookbook.texi:4003
+#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3711
+#: guix-git/doc/guix-cookbook.texi:4026
 #, fuzzy, no-wrap
 #| msgid "security key, configuration"
 msgid "Cluster Security Considerations"
 msgstr "보안 키, 구성"
 
 #. type: menuentry
-#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3688
+#: guix-git/doc/guix-cookbook.texi:126 guix-git/doc/guix-cookbook.texi:3711
 msgid "Keeping the cluster secure."
 msgstr ""
 
@@ -1290,60 +1290,43 @@ msgstr ""
 msgid "The @code{use-modules} expression tells which of the modules we need in the file.  Modules are a collection of values and procedures.  They are commonly called ``libraries'' or ``packages'' in other programming languages."
 msgstr ""
 
-#. type: node
-#: guix-git/doc/guix-cookbook.texi:631
-#, no-wrap
-msgid "@samp{GUIX_PACKAGE_PATH}"
-msgstr "@samp{GUIX_PACKAGE_PATH}"
-
-#. type: samp{#1}
-#: guix-git/doc/guix-cookbook.texi:632
-#, no-wrap
-msgid "GUIX_PACKAGE_PATH"
-msgstr "GUIX_PACKAGE_PATH"
+#. type: subsubsection
+#: guix-git/doc/guix-cookbook.texi:631 guix-git/doc/guix-cookbook.texi:632
+#, fuzzy, no-wrap
+#| msgid "Guix channels"
+msgid "Channels"
+msgstr "Guix 채널"
 
-#. type: emph{#1}
-#: guix-git/doc/guix-cookbook.texi:636
-msgid "Note: Starting from Guix 0.16, the more flexible Guix @dfn{channels} are the preferred way and supersede @samp{GUIX_PACKAGE_PATH}.  See next section."
-msgstr ""
+#. type: cindex
+#: guix-git/doc/guix-cookbook.texi:634
+#, fuzzy, no-wrap
+#| msgid "Guix channels"
+msgid "channel"
+msgstr "Guix 채널"
 
 #. type: Plain text
 #: guix-git/doc/guix-cookbook.texi:640
-msgid "It can be tedious to specify the file from the command line instead of simply calling @code{guix package --install my-hello} as you would do with the official packages."
+msgid "Guix and its package collection can be extended through @dfn{channels}.  A channel is a Git repository, public or not, containing @file{.scm} files that provide packages (@pxref{Defining Packages,,, guix, GNU Guix Reference Manual}) or services (@pxref{Defining Services,,, guix, GNU Guix Reference Manual})."
 msgstr ""
 
 #. type: Plain text
 #: guix-git/doc/guix-cookbook.texi:643
-msgid "Guix makes it possible to streamline the process by adding as many ``package declaration directories'' as you want."
-msgstr ""
-
-#. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:646
-msgid "Create a directory, say @file{~/guix-packages} and add it to the @samp{GUIX_PACKAGE_PATH} environment variable:"
+msgid "How would you go about creating a channel? First, create a directory that will contain your @file{.scm} files, say @file{~/my-channel}:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:650
+#: guix-git/doc/guix-cookbook.texi:646
 #, no-wrap
-msgid ""
-"$ mkdir ~/guix-packages\n"
-"$ export GUIX_PACKAGE_PATH=~/guix-packages\n"
-msgstr ""
-"$ mkdir ~/guix-packages\n"
-"$ export GUIX_PACKAGE_PATH=~/guix-packages\n"
-
-#. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:653
-msgid "To add several directories, separate them with a colon (@code{:})."
+msgid "mkdir ~/my-channel\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:655
-msgid "Our previous @samp{my-hello} needs some adjustments though:"
+#: guix-git/doc/guix-cookbook.texi:650
+msgid "Suppose you want to add the @samp{my-hello} package we saw previously; it first needs some adjustments:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:662
+#: guix-git/doc/guix-cookbook.texi:657
 #, no-wrap
 msgid ""
 "(define-module (my-hello)\n"
@@ -1361,7 +1344,7 @@ msgstr ""
 "\n"
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:682
+#: guix-git/doc/guix-cookbook.texi:677
 #, no-wrap
 msgid ""
 "(define-public my-hello\n"
@@ -1405,22 +1388,28 @@ msgstr ""
 " (license gpl3+)))\n"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:688
+#: guix-git/doc/guix-cookbook.texi:683
 msgid "Note that we have assigned the package value to an exported variable name with @code{define-public}.  This is effectively assigning the package to the @code{my-hello} variable so that it can be referenced, among other as dependency of other packages."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:693
+#: guix-git/doc/guix-cookbook.texi:688
 msgid "If you use @code{guix package --install-from-file=my-hello.scm} on the above file, it will fail because the last expression, @code{define-public}, does not return a package.  If you want to use @code{define-public} in this use-case nonetheless, make sure the file ends with an evaluation of @code{my-hello}:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:699
-#, no-wrap
-msgid ""
-"; ...\n"
+#: guix-git/doc/guix-cookbook.texi:694
+#, fuzzy, no-wrap
+#| msgid ""
+#| "; ...\n"
+#| "(define-public my-hello\n"
+#| "  ; ...\n"
+#| "  )\n"
+#| "\n"
+msgid ""
+";; ...\n"
 "(define-public my-hello\n"
-"  ; ...\n"
+"  ;; ...\n"
 "  )\n"
 "\n"
 msgstr ""
@@ -1431,102 +1420,129 @@ msgstr ""
 "\n"
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:701
+#: guix-git/doc/guix-cookbook.texi:696
 #, no-wrap
 msgid "my-hello\n"
 msgstr "안녕하세요\n"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:704
+#: guix-git/doc/guix-cookbook.texi:699
 msgid "This last example is not very typical."
 msgstr "이 마지막 예제는 매우 전형적이지 않습니다."
 
 #. type: Plain text
+#: guix-git/doc/guix-cookbook.texi:703
+msgid "Now how do you make that package visible to @command{guix} commands so you can test your packages? You need to add the directory to the search path using the @option{-L} command-line option, as in these examples:"
+msgstr ""
+
+#. type: example
 #: guix-git/doc/guix-cookbook.texi:707
-msgid "Now @samp{my-hello} should be part of the package collection like all other official packages.  You can verify this with:"
+#, no-wrap
+msgid ""
+"guix show -L ~/my-channel my-hello\n"
+"guix build -L ~/my-channel my-hello\n"
+msgstr ""
+
+#. type: Plain text
+#: guix-git/doc/guix-cookbook.texi:713
+msgid "The final step is to turn @file{~/my-channel} into an actual channel, making your package collection seamlessly available @i{via} any @command{guix} command.  To do that, you first need to make it a Git repository:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:710
+#: guix-git/doc/guix-cookbook.texi:719
 #, no-wrap
-msgid "$ guix package --show=my-hello\n"
-msgstr "$ guix package --show=my-hello\n"
+msgid ""
+"cd ~/my-channel\n"
+"git init\n"
+"git add my-hello.scm\n"
+"git commit -m \"First commit of my channel.\"\n"
+msgstr ""
 
-#. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:712 guix-git/doc/guix-cookbook.texi:713
+#. type: Plain text
+#: guix-git/doc/guix-cookbook.texi:727
+msgid "And that's it, you have a channel! From there on, you can add this channel to your channel configuration in @file{~/.config/guix/channels.scm} (@pxref{Specifying Additional Channels,,, guix, GNU Guix Reference Manual}); assuming you keep your channel local for now, the @file{channels.scm} would look something like this:"
+msgstr ""
+
+#. type: lisp
+#: guix-git/doc/guix-cookbook.texi:734
 #, no-wrap
-msgid "Guix channels"
-msgstr "Guix 채널"
+msgid ""
+"(append (list (channel\n"
+"                (name 'my-channel)\n"
+"                (url (string-append \"file://\" (getenv \"HOME\")\n"
+"                                    \"/my-channel\"))))\n"
+"        %default-channels)\n"
+msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:719
-msgid "Guix 0.16 features channels, which is very similar to @samp{GUIX_PACKAGE_PATH} but provides better integration and provenance tracking.  Channels are not necessarily local, they can be maintained as a public Git repository for instance.  Of course, several channels can be used at the same time."
+#: guix-git/doc/guix-cookbook.texi:741
+msgid "Next time you run @command{guix pull}, your channel will be picked up and the packages it defines will be readily available to all the @command{guix} commands, even if you do not pass @option{-L}.  The @command{guix describe} command will show that Guix is, indeed, using both the @code{my-channel} and the @code{guix} channels."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:721
-msgid "@xref{Channels,,, guix, GNU Guix Reference Manual} for setup details."
+#: guix-git/doc/guix-cookbook.texi:744
+msgid "@xref{Creating a Channel,,, guix, GNU Guix Reference Manual}, for details."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:722 guix-git/doc/guix-cookbook.texi:723
+#: guix-git/doc/guix-cookbook.texi:745 guix-git/doc/guix-cookbook.texi:746
 #, no-wrap
 msgid "Direct checkout hacking"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:728
+#: guix-git/doc/guix-cookbook.texi:751
 msgid "Working directly on the Guix project is recommended: it reduces the friction when the time comes to submit your changes upstream to let the community benefit from your hard work!"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:734
+#: guix-git/doc/guix-cookbook.texi:757
 msgid "Unlike most software distributions, the Guix repository holds in one place both the tooling (including the package manager) and the package definitions.  This choice was made so that it would give developers the flexibility to modify the API without breakage by updating all packages at the same time.  This reduces development inertia."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:736
+#: guix-git/doc/guix-cookbook.texi:759
 msgid "Check out the official @uref{https://git-scm.com/, Git} repository:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:739
+#: guix-git/doc/guix-cookbook.texi:762
 #, no-wrap
 msgid "$ git clone https://git.savannah.gnu.org/git/guix.git\n"
 msgstr "$ git clone https://git.savannah.gnu.org/git/guix.git\n"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:743
+#: guix-git/doc/guix-cookbook.texi:766
 msgid "In the rest of this article, we use @samp{$GUIX_CHECKOUT} to refer to the location of the checkout."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:747
+#: guix-git/doc/guix-cookbook.texi:770
 msgid "Follow the instructions in the manual (@pxref{Contributing,,, guix, GNU Guix Reference Manual}) to set up the repository environment."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:750
+#: guix-git/doc/guix-cookbook.texi:773
 msgid "Once ready, you should be able to use the package definitions from the repository environment."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:752
+#: guix-git/doc/guix-cookbook.texi:775
 msgid "Feel free to edit package definitions found in @samp{$GUIX_CHECKOUT/gnu/packages}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:756
+#: guix-git/doc/guix-cookbook.texi:779
 msgid "The @samp{$GUIX_CHECKOUT/pre-inst-env} script lets you use @samp{guix} over the package collection of the repository (@pxref{Running Guix Before It Is Installed,,, guix, GNU Guix Reference Manual})."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:760
+#: guix-git/doc/guix-cookbook.texi:783
 msgid "Search packages, such as Ruby:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:767
+#: guix-git/doc/guix-cookbook.texi:790
 #, no-wrap
 msgid ""
 "  $ cd $GUIX_CHECKOUT\n"
@@ -1542,12 +1558,12 @@ msgstr ""
 " ruby 2.2.2 out gnu/packages/ruby.scm:39:2\n"
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:771
+#: guix-git/doc/guix-cookbook.texi:794
 msgid "Build a package, here Ruby version 2.1:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:775
+#: guix-git/doc/guix-cookbook.texi:798
 #, no-wrap
 msgid ""
 "  $ ./pre-inst-env guix build --keep-failed ruby@@2.1\n"
@@ -1555,65 +1571,65 @@ msgid ""
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:779
+#: guix-git/doc/guix-cookbook.texi:802
 msgid "Install it to your user profile:"
 msgstr "당신의 사용자 프로파일에 설치합니다:"
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:782
+#: guix-git/doc/guix-cookbook.texi:805
 #, no-wrap
 msgid "  $ ./pre-inst-env guix package --install ruby@@2.1\n"
 msgstr "  $ ./pre-inst-env guix package --install ruby@@2.1\n"
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:786
+#: guix-git/doc/guix-cookbook.texi:809
 msgid "Check for common mistakes:"
 msgstr "일반적인 실수를 점검합니다:"
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:789
+#: guix-git/doc/guix-cookbook.texi:812
 #, no-wrap
 msgid "  $ ./pre-inst-env guix lint ruby@@2.1\n"
 msgstr "  $ ./pre-inst-env guix lint ruby@@2.1\n"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:794
+#: guix-git/doc/guix-cookbook.texi:817
 msgid "Guix strives at maintaining a high packaging standard; when contributing to the Guix project, remember to"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:798
+#: guix-git/doc/guix-cookbook.texi:821
 msgid "follow the coding style (@pxref{Coding Style,,, guix, GNU Guix Reference Manual}),"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:800
+#: guix-git/doc/guix-cookbook.texi:823
 msgid "and review the check list from the manual (@pxref{Submitting Patches,,, guix, GNU Guix Reference Manual})."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:804
+#: guix-git/doc/guix-cookbook.texi:827
 msgid "Once you are happy with the result, you are welcome to send your contribution to make it part of Guix.  This process is also detailed in the manual.  (@pxref{Contributing,,, guix, GNU Guix Reference Manual})"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:807
+#: guix-git/doc/guix-cookbook.texi:830
 msgid "It's a community effort so the more join in, the better Guix becomes!"
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:808 guix-git/doc/guix-cookbook.texi:809
+#: guix-git/doc/guix-cookbook.texi:831 guix-git/doc/guix-cookbook.texi:832
 #, no-wrap
 msgid "Extended example"
 msgstr "확장된 예제"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:814
+#: guix-git/doc/guix-cookbook.texi:837
 msgid "The above ``Hello World'' example is as simple as it goes.  Packages can be more complex than that and Guix can handle more advanced scenarios.  Let's look at another, more sophisticated package (slightly modified from the source):"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:828
+#: guix-git/doc/guix-cookbook.texi:851
 #, no-wrap
 msgid ""
 "(define-module (gnu packages version-control)\n"
@@ -1645,7 +1661,7 @@ msgstr ""
 "\n"
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:882
+#: guix-git/doc/guix-cookbook.texi:905
 #, no-wrap
 msgid ""
 "(define-public my-libgit2\n"
@@ -1757,43 +1773,43 @@ msgstr ""
 "      (license license:gpl2))))\n"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:887
+#: guix-git/doc/guix-cookbook.texi:910
 msgid "(In those cases were you only want to tweak a few fields from a package definition, you should rely on inheritance instead of copy-pasting everything.  See below.)"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:889
+#: guix-git/doc/guix-cookbook.texi:912
 msgid "Let's discuss those fields in depth."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:890
+#: guix-git/doc/guix-cookbook.texi:913
 #, no-wrap
 msgid "@code{git-fetch} method"
 msgstr "@code{git-fetch} 방법"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:897
+#: guix-git/doc/guix-cookbook.texi:920
 msgid "Unlike the @code{url-fetch} method, @code{git-fetch} expects a @code{git-reference} which takes a Git repository and a commit.  The commit can be any Git reference such as tags, so if the @code{version} is tagged, then it can be used directly.  Sometimes the tag is prefixed with a @code{v}, in which case you'd use @code{(commit (string-append \"v\" version))}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:901
+#: guix-git/doc/guix-cookbook.texi:924
 msgid "To ensure that the source code from the Git repository is stored in a directory with a descriptive name, we use @code{(file-name (git-file-name name version))}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:906
+#: guix-git/doc/guix-cookbook.texi:929
 msgid "The @code{git-version} procedure can be used to derive the version when packaging programs for a specific commit, following the Guix contributor guidelines (@pxref{Version Numbers,,, guix, GNU Guix Reference Manual})."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:910
+#: guix-git/doc/guix-cookbook.texi:933
 msgid "How does one obtain the @code{sha256} hash that's in there, you ask? By invoking @command{guix hash} on a checkout of the desired commit, along these lines:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:916
+#: guix-git/doc/guix-cookbook.texi:939
 #, no-wrap
 msgid ""
 "git clone https://github.com/libgit2/libgit2/\n"
@@ -1807,109 +1823,109 @@ msgstr ""
 "guix hash -rx .\n"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:921
+#: guix-git/doc/guix-cookbook.texi:944
 msgid "@command{guix hash -rx} computes a SHA256 hash over the whole directory, excluding the @file{.git} sub-directory (@pxref{Invoking guix hash,,, guix, GNU Guix Reference Manual})."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:924
+#: guix-git/doc/guix-cookbook.texi:947
 msgid "In the future, @command{guix download} will hopefully be able to do these steps for you, just like it does for regular downloads."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:925
+#: guix-git/doc/guix-cookbook.texi:948
 #, no-wrap
 msgid "Snippets"
 msgstr "단편"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:931
+#: guix-git/doc/guix-cookbook.texi:954
 msgid "Snippets are quoted (i.e. non-evaluated) Scheme code that are a means of patching the source.  They are a Guix-y alternative to the traditional @file{.patch} files.  Because of the quote, the code in only evaluated when passed to the Guix daemon for building.  There can be as many snippets as needed."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:934
+#: guix-git/doc/guix-cookbook.texi:957
 msgid "Snippets might need additional Guile modules which can be imported from the @code{modules} field."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:935
+#: guix-git/doc/guix-cookbook.texi:958
 #, no-wrap
 msgid "Inputs"
 msgstr "입력"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:938
+#: guix-git/doc/guix-cookbook.texi:961
 msgid "There are 3 different input types.  In short:"
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:940
+#: guix-git/doc/guix-cookbook.texi:963
 #, no-wrap
 msgid "native-inputs"
 msgstr "기본-입력"
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:943
+#: guix-git/doc/guix-cookbook.texi:966
 msgid "Required for building but not runtime -- installing a package through a substitute won't install these inputs."
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:943
+#: guix-git/doc/guix-cookbook.texi:966
 #, no-wrap
 msgid "inputs"
 msgstr "입력"
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:946
+#: guix-git/doc/guix-cookbook.texi:969
 msgid "Installed in the store but not in the profile, as well as being present at build time."
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:946
+#: guix-git/doc/guix-cookbook.texi:969
 #, no-wrap
 msgid "propagated-inputs"
 msgstr "지연된-입력"
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:949
+#: guix-git/doc/guix-cookbook.texi:972
 msgid "Installed in the store and in the profile, as well as being present at build time."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:952
+#: guix-git/doc/guix-cookbook.texi:975
 msgid "@xref{package Reference,,, guix, GNU Guix Reference Manual} for more details."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:956
+#: guix-git/doc/guix-cookbook.texi:979
 msgid "The distinction between the various inputs is important: if a dependency can be handled as an @emph{input} instead of a @emph{propagated input}, it should be done so, or else it ``pollutes'' the user profile for no good reason."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:963
+#: guix-git/doc/guix-cookbook.texi:986
 msgid "For instance, a user installing a graphical program that depends on a command line tool might only be interested in the graphical part, so there is no need to force the command line tool into the user profile.  The dependency is a concern to the package, not to the user.  @emph{Inputs} make it possible to handle dependencies without bugging the user by adding undesired executable files (or libraries) to their profile."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:969
+#: guix-git/doc/guix-cookbook.texi:992
 msgid "Same goes for @emph{native-inputs}: once the program is installed, build-time dependencies can be safely garbage-collected.  It also matters when a substitute is available, in which case only the @emph{inputs} and @emph{propagated inputs} will be fetched: the @emph{native inputs} are not required to install a package from a substitute."
 msgstr ""
 
 #. type: quotation
-#: guix-git/doc/guix-cookbook.texi:970 guix-git/doc/guix-cookbook.texi:2001
-#: guix-git/doc/guix-cookbook.texi:3677 guix-git/doc/guix-cookbook.texi:3731
+#: guix-git/doc/guix-cookbook.texi:993 guix-git/doc/guix-cookbook.texi:2024
+#: guix-git/doc/guix-cookbook.texi:3700 guix-git/doc/guix-cookbook.texi:3754
 #, no-wrap
 msgid "Note"
 msgstr "알림"
 
 #. type: quotation
-#: guix-git/doc/guix-cookbook.texi:973
+#: guix-git/doc/guix-cookbook.texi:996
 msgid "You may see here and there snippets where package inputs are written quite differently, like so:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:980
+#: guix-git/doc/guix-cookbook.texi:1003
 #, no-wrap
 msgid ""
 ";; The \"old style\" for inputs.\n"
@@ -1920,69 +1936,69 @@ msgid ""
 msgstr ""
 
 #. type: quotation
-#: guix-git/doc/guix-cookbook.texi:986
+#: guix-git/doc/guix-cookbook.texi:1009
 msgid "This is the ``old style'', where each input in the list is explicitly given a label (a string).  It is still supported but we recommend using the style above instead.  @xref{package Reference,,, guix, GNU Guix Reference Manual}, for more info."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:988
+#: guix-git/doc/guix-cookbook.texi:1011
 #, no-wrap
 msgid "Outputs"
 msgstr "출력"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:992
+#: guix-git/doc/guix-cookbook.texi:1015
 msgid "Just like how a package can have multiple inputs, it can also produce multiple outputs."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:994
+#: guix-git/doc/guix-cookbook.texi:1017
 msgid "Each output corresponds to a separate directory in the store."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:997
+#: guix-git/doc/guix-cookbook.texi:1020
 msgid "The user can choose which output to install; this is useful to save space or to avoid polluting the user profile with unwanted executables or libraries."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1000
+#: guix-git/doc/guix-cookbook.texi:1023
 msgid "Output separation is optional.  When the @code{outputs} field is left out, the default and only output (the complete package) is referred to as @code{\"out\"}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1002
+#: guix-git/doc/guix-cookbook.texi:1025
 msgid "Typical separate output names include @code{debug} and @code{doc}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1006
+#: guix-git/doc/guix-cookbook.texi:1029
 msgid "It's advised to separate outputs only when you've shown it's worth it: if the output size is significant (compare with @code{guix size}) or in case the package is modular."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:1007
+#: guix-git/doc/guix-cookbook.texi:1030
 #, no-wrap
 msgid "Build system arguments"
 msgstr "시스템 인수를 구성합니다"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1010
+#: guix-git/doc/guix-cookbook.texi:1033
 msgid "The @code{arguments} is a keyword-value list used to configure the build process."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1015
+#: guix-git/doc/guix-cookbook.texi:1038
 msgid "The simplest argument @code{#:tests?} can be used to disable the test suite when building the package.  This is mostly useful when the package does not feature any test suite.  It's strongly recommended to keep the test suite on if there is one."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1019
+#: guix-git/doc/guix-cookbook.texi:1042
 msgid "Another common argument is @code{:make-flags}, which specifies a list of flags to append when running make, as you would from the command line.  For instance, the following flags"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1023
+#: guix-git/doc/guix-cookbook.texi:1046
 #, no-wrap
 msgid ""
 "#:make-flags (list (string-append \"prefix=\" (assoc-ref %outputs \"out\"))\n"
@@ -1990,44 +2006,44 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1026
+#: guix-git/doc/guix-cookbook.texi:1049
 msgid "translate into"
 msgstr "번역합니다"
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1029
+#: guix-git/doc/guix-cookbook.texi:1052
 #, no-wrap
 msgid "$ make CC=gcc prefix=/gnu/store/...-<out>\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1035
+#: guix-git/doc/guix-cookbook.texi:1058
 msgid "This sets the C compiler to @code{gcc} and the @code{prefix} variable (the installation directory in Make parlance) to @code{(assoc-ref %outputs \"out\")}, which is a build-stage global variable pointing to the destination directory in the store (something like @file{/gnu/store/...-my-libgit2-20180408})."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1037
+#: guix-git/doc/guix-cookbook.texi:1060
 msgid "Similarly, it's possible to set the configure flags:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1040
+#: guix-git/doc/guix-cookbook.texi:1063
 #, no-wrap
 msgid "#:configure-flags '(\"-DUSE_SHA1DC=ON\")\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1044
+#: guix-git/doc/guix-cookbook.texi:1067
 msgid "The @code{%build-inputs} variable is also generated in scope.  It's an association table that maps the input names to their store directories."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1049
+#: guix-git/doc/guix-cookbook.texi:1072
 msgid "The @code{phases} keyword lists the sequential steps of the build system.  Typically phases include @code{unpack}, @code{configure}, @code{build}, @code{install} and @code{check}.  To know more about those phases, you need to work out the appropriate build system definition in @samp{$GUIX_CHECKOUT/guix/build/gnu-build-system.scm}:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1068
+#: guix-git/doc/guix-cookbook.texi:1091
 #, no-wrap
 msgid ""
 "(define %standard-phases\n"
@@ -2067,12 +2083,12 @@ msgstr ""
 " compress-documentation)))\n"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1071
+#: guix-git/doc/guix-cookbook.texi:1094
 msgid "Or from the REPL:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1077
+#: guix-git/doc/guix-cookbook.texi:1100
 #, no-wrap
 msgid ""
 "(add-to-load-path \"/path/to/guix/checkout\")\n"
@@ -2082,17 +2098,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1081
+#: guix-git/doc/guix-cookbook.texi:1104
 msgid "If you want to know more about what happens during those phases, consult the associated procedures."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1084
+#: guix-git/doc/guix-cookbook.texi:1107
 msgid "For instance, as of this writing the definition of @code{unpack} for the GNU build system is:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1094
+#: guix-git/doc/guix-cookbook.texi:1117
 #, no-wrap
 msgid ""
 "(define* (unpack #:key source #:allow-other-keys)\n"
@@ -2107,7 +2123,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1105
+#: guix-git/doc/guix-cookbook.texi:1128
 #, no-wrap
 msgid ""
 "        ;; Preserve timestamps (set to the Epoch) on the copied tree so that\n"
@@ -2123,42 +2139,42 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1113
+#: guix-git/doc/guix-cookbook.texi:1136
 msgid "Note the @code{chdir} call: it changes the working directory to where the source was unpacked.  Thus every phase following the @code{unpack} will use the source as a working directory, which is why we can directly work on the source files.  That is to say, unless a later phase changes the working directory to something else."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1117
+#: guix-git/doc/guix-cookbook.texi:1140
 msgid "We modify the list of @code{%standard-phases} of the build system with the @code{modify-phases} macro as per the list of specified modifications, which may have the following forms:"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:1121
+#: guix-git/doc/guix-cookbook.texi:1144
 msgid "@code{(add-before @var{phase} @var{new-phase} @var{procedure})}: Run @var{procedure} named @var{new-phase} before @var{phase}."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:1123
+#: guix-git/doc/guix-cookbook.texi:1146
 msgid "@code{(add-after @var{phase} @var{new-phase} @var{procedure})}: Same, but afterwards."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:1125
+#: guix-git/doc/guix-cookbook.texi:1148
 msgid "@code{(replace @var{phase} @var{procedure})}."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:1127
+#: guix-git/doc/guix-cookbook.texi:1150
 msgid "@code{(delete @var{phase})}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1134
+#: guix-git/doc/guix-cookbook.texi:1157
 msgid "The @var{procedure} supports the keyword arguments @code{inputs} and @code{outputs}.  Each input (whether @emph{native}, @emph{propagated} or not) and output directory is referenced by their name in those variables.  Thus @code{(assoc-ref outputs \"out\")} is the store directory of the main output of the package.  A phase procedure may look like this:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1142
+#: guix-git/doc/guix-cookbook.texi:1165
 #, no-wrap
 msgid ""
 "(lambda* (#:key inputs outputs #:allow-other-keys)\n"
@@ -2176,212 +2192,212 @@ msgstr ""
 " #true))\n"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1148
+#: guix-git/doc/guix-cookbook.texi:1171
 msgid "The procedure must return @code{#true} on success.  It's brittle to rely on the return value of the last expression used to tweak the phase because there is no guarantee it would be a @code{#true}.  Hence the trailing @code{#true} to ensure the right value is returned on success."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:1149
+#: guix-git/doc/guix-cookbook.texi:1172
 #, no-wrap
 msgid "Code staging"
 msgstr "코드 스테이징"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1155
+#: guix-git/doc/guix-cookbook.texi:1178
 msgid "The astute reader may have noticed the quasi-quote and comma syntax in the argument field.  Indeed, the build code in the package declaration should not be evaluated on the client side, but only when passed to the Guix daemon.  This mechanism of passing code around two running processes is called @uref{https://arxiv.org/abs/1709.00833, code staging}."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:1156
+#: guix-git/doc/guix-cookbook.texi:1179
 #, no-wrap
 msgid "Utility functions"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1161
+#: guix-git/doc/guix-cookbook.texi:1184
 msgid "When customizing @code{phases}, we often need to write code that mimics the equivalent system invocations (@code{make}, @code{mkdir}, @code{cp}, etc.)@: commonly used during regular ``Unix-style'' installations."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1164
+#: guix-git/doc/guix-cookbook.texi:1187
 msgid "Some like @code{chmod} are native to Guile.  @xref{,,, guile, Guile reference manual} for a complete list."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1167
+#: guix-git/doc/guix-cookbook.texi:1190
 msgid "Guix provides additional helper functions which prove especially handy in the context of package management."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1171
+#: guix-git/doc/guix-cookbook.texi:1194
 msgid "Some of those functions can be found in @samp{$GUIX_CHECKOUT/guix/guix/build/utils.scm}.  Most of them mirror the behaviour of the traditional Unix system commands:"
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:1173
+#: guix-git/doc/guix-cookbook.texi:1196
 #, no-wrap
 msgid "which"
 msgstr ""
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:1175
+#: guix-git/doc/guix-cookbook.texi:1198
 msgid "Like the @samp{which} system command."
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:1175
+#: guix-git/doc/guix-cookbook.texi:1198
 #, no-wrap
 msgid "find-files"
 msgstr ""
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:1177
+#: guix-git/doc/guix-cookbook.texi:1200
 msgid "Akin to the @samp{find} system command."
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:1177
+#: guix-git/doc/guix-cookbook.texi:1200
 #, no-wrap
 msgid "mkdir-p"
 msgstr ""
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:1179
+#: guix-git/doc/guix-cookbook.texi:1202
 msgid "Like @samp{mkdir -p}, which creates all parents as needed."
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:1179
+#: guix-git/doc/guix-cookbook.texi:1202
 #, no-wrap
 msgid "install-file"
 msgstr ""
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:1183
+#: guix-git/doc/guix-cookbook.texi:1206
 msgid "Similar to @samp{install} when installing a file to a (possibly non-existing) directory.  Guile has @code{copy-file} which works like @samp{cp}."
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:1183
+#: guix-git/doc/guix-cookbook.texi:1206
 #, no-wrap
 msgid "copy-recursively"
 msgstr ""
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:1185
+#: guix-git/doc/guix-cookbook.texi:1208
 msgid "Like @samp{cp -r}."
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:1185
+#: guix-git/doc/guix-cookbook.texi:1208
 #, no-wrap
 msgid "delete-file-recursively"
 msgstr ""
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:1187
+#: guix-git/doc/guix-cookbook.texi:1210
 msgid "Like @samp{rm -rf}."
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:1187
+#: guix-git/doc/guix-cookbook.texi:1210
 #, no-wrap
 msgid "invoke"
 msgstr ""
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:1189
+#: guix-git/doc/guix-cookbook.texi:1212
 msgid "Run an executable.  This should be used instead of @code{system*}."
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:1189
+#: guix-git/doc/guix-cookbook.texi:1212
 #, no-wrap
 msgid "with-directory-excursion"
 msgstr ""
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:1192
+#: guix-git/doc/guix-cookbook.texi:1215
 msgid "Run the body in a different working directory, then restore the previous working directory."
 msgstr ""
 
 #. type: item
-#: guix-git/doc/guix-cookbook.texi:1192
+#: guix-git/doc/guix-cookbook.texi:1215
 #, no-wrap
 msgid "substitute*"
 msgstr ""
 
 #. type: table
-#: guix-git/doc/guix-cookbook.texi:1194
+#: guix-git/doc/guix-cookbook.texi:1217
 msgid "A ``@command{sed}-like'' function."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1198
+#: guix-git/doc/guix-cookbook.texi:1221
 msgid "@xref{Build Utilities,,, guix, GNU Guix Reference Manual}, for more information on these utilities."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:1199
+#: guix-git/doc/guix-cookbook.texi:1222
 #, no-wrap
 msgid "Module prefix"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1209
+#: guix-git/doc/guix-cookbook.texi:1232
 msgid "The license in our last example needs a prefix: this is because of how the @code{license} module was imported in the package, as @code{#:use-module ((guix licenses)  #:prefix license:)}.  The Guile module import mechanism (@pxref{Using Guile Modules,,, guile, Guile reference manual})  gives the user full control over namespacing: this is needed to avoid clashes between, say, the @samp{zlib} variable from @samp{licenses.scm} (a @emph{license} value) and the @samp{zlib} variable from @samp{compression.scm} (a @emph{package} value)."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:1210 guix-git/doc/guix-cookbook.texi:1211
+#: guix-git/doc/guix-cookbook.texi:1233 guix-git/doc/guix-cookbook.texi:1234
 #, no-wrap
 msgid "Other build systems"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1218
+#: guix-git/doc/guix-cookbook.texi:1241
 msgid "What we've seen so far covers the majority of packages using a build system other than the @code{trivial-build-system}.  The latter does not automate anything and leaves you to build everything manually.  This can be more demanding and we won't cover it here for now, but thankfully it is rarely necessary to fall back on this system."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1222
+#: guix-git/doc/guix-cookbook.texi:1245
 msgid "For the other build systems, such as ASDF, Emacs, Perl, Ruby and many more, the process is very similar to the GNU build system except for a few specialized arguments."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1227
+#: guix-git/doc/guix-cookbook.texi:1250
 msgid "@xref{Build Systems,,, guix, GNU Guix Reference Manual}, for more information on build systems, or check the source code in the @samp{$GUIX_CHECKOUT/guix/build} and @samp{$GUIX_CHECKOUT/guix/build-system} directories."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:1228 guix-git/doc/guix-cookbook.texi:1229
+#: guix-git/doc/guix-cookbook.texi:1251 guix-git/doc/guix-cookbook.texi:1252
 #, no-wrap
 msgid "Programmable and automated package definition"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1233
+#: guix-git/doc/guix-cookbook.texi:1256
 msgid "We can't repeat it enough: having a full-fledged programming language at hand empowers us in ways that reach far beyond traditional package management."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1235
+#: guix-git/doc/guix-cookbook.texi:1258
 msgid "Let's illustrate this with some awesome features of Guix!"
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:1236 guix-git/doc/guix-cookbook.texi:1237
+#: guix-git/doc/guix-cookbook.texi:1259 guix-git/doc/guix-cookbook.texi:1260
 #, no-wrap
 msgid "Recursive importers"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1244
+#: guix-git/doc/guix-cookbook.texi:1267
 msgid "You might find some build systems good enough that there is little to do at all to write a package, to the point that it becomes repetitive and tedious after a while.  A @emph{raison d'être} of computers is to replace human beings at those boring tasks.  So let's tell Guix to do this for us and create the package definition of an R package from CRAN (the output is trimmed for conciseness):"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1247
+#: guix-git/doc/guix-cookbook.texi:1270
 #, no-wrap
 msgid ""
 "$ guix import cran --recursive walrus\n"
@@ -2389,7 +2405,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1251
+#: guix-git/doc/guix-cookbook.texi:1274
 #, no-wrap
 msgid ""
 "(define-public r-mc2d\n"
@@ -2399,7 +2415,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1255
+#: guix-git/doc/guix-cookbook.texi:1278
 #, no-wrap
 msgid ""
 "(define-public r-jmvcore\n"
@@ -2409,7 +2425,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1259
+#: guix-git/doc/guix-cookbook.texi:1282
 #, no-wrap
 msgid ""
 "(define-public r-wrs2\n"
@@ -2419,7 +2435,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1285
+#: guix-git/doc/guix-cookbook.texi:1308
 #, no-wrap
 msgid ""
 "(define-public r-walrus\n"
@@ -2450,56 +2466,56 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1289
+#: guix-git/doc/guix-cookbook.texi:1312
 msgid "The recursive importer won't import packages for which Guix already has package definitions, except for the very first."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1294
+#: guix-git/doc/guix-cookbook.texi:1317
 msgid "Not all applications can be packaged this way, only those relying on a select number of supported systems.  Read about the full list of importers in the guix import section of the manual (@pxref{Invoking guix import,,, guix, GNU Guix Reference Manual})."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:1295 guix-git/doc/guix-cookbook.texi:1296
+#: guix-git/doc/guix-cookbook.texi:1318 guix-git/doc/guix-cookbook.texi:1319
 #, no-wrap
 msgid "Automatic update"
 msgstr "자동으로 최신화"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1300
+#: guix-git/doc/guix-cookbook.texi:1323
 msgid "Guix can be smart enough to check for updates on systems it knows.  It can report outdated package definitions with"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1303
+#: guix-git/doc/guix-cookbook.texi:1326
 #, no-wrap
 msgid "$ guix refresh hello\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1308
+#: guix-git/doc/guix-cookbook.texi:1331
 msgid "In most cases, updating a package to a newer version requires little more than changing the version number and the checksum.  Guix can do that automatically as well:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1311
+#: guix-git/doc/guix-cookbook.texi:1334
 #, no-wrap
 msgid "$ guix refresh hello --update\n"
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:1313 guix-git/doc/guix-cookbook.texi:1314
+#: guix-git/doc/guix-cookbook.texi:1336 guix-git/doc/guix-cookbook.texi:1337
 #, no-wrap
 msgid "Inheritance"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1318
+#: guix-git/doc/guix-cookbook.texi:1341
 msgid "If you've started browsing the existing package definitions, you might have noticed that a significant number of them have a @code{inherit} field:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1333
+#: guix-git/doc/guix-cookbook.texi:1356
 #, no-wrap
 msgid ""
 "(define-public adwaita-icon-theme\n"
@@ -2531,100 +2547,100 @@ msgstr ""
 "    (native-inputs (list `(,gtk+ \"bin\")))))\n"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1338
+#: guix-git/doc/guix-cookbook.texi:1361
 msgid "All unspecified fields are inherited from the parent package.  This is very convenient to create alternative packages, for instance with different source, version or compilation options."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:1339 guix-git/doc/guix-cookbook.texi:1340
+#: guix-git/doc/guix-cookbook.texi:1362 guix-git/doc/guix-cookbook.texi:1363
 #, no-wrap
 msgid "Getting help"
 msgstr "도움 얻기"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1346
+#: guix-git/doc/guix-cookbook.texi:1369
 msgid "Sadly, some applications can be tough to package.  Sometimes they need a patch to work with the non-standard file system hierarchy enforced by the store.  Sometimes the tests won't run properly.  (They can be skipped but this is not recommended.)  Other times the resulting package won't be reproducible."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1349
+#: guix-git/doc/guix-cookbook.texi:1372
 msgid "Should you be stuck, unable to figure out how to fix any sort of packaging issue, don't hesitate to ask the community for help."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1351
+#: guix-git/doc/guix-cookbook.texi:1374
 msgid "See the @uref{https://www.gnu.org/software/guix/contact/, Guix homepage} for information on the mailing lists, IRC, etc."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:1352 guix-git/doc/guix-cookbook.texi:1353
+#: guix-git/doc/guix-cookbook.texi:1375 guix-git/doc/guix-cookbook.texi:1376
 #, no-wrap
 msgid "Conclusion"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1359
+#: guix-git/doc/guix-cookbook.texi:1382
 msgid "This tutorial was a showcase of the sophisticated package management that Guix boasts.  At this point we have mostly restricted this introduction to the @code{gnu-build-system} which is a core abstraction layer on which more advanced abstractions are based."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1364
+#: guix-git/doc/guix-cookbook.texi:1387
 msgid "Where do we go from here? Next we ought to dissect the innards of the build system by removing all abstractions, using the @code{trivial-build-system}: this should give us a thorough understanding of the process before investigating some more advanced packaging techniques and edge cases."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1367
+#: guix-git/doc/guix-cookbook.texi:1390
 msgid "Other features worth exploring are the interactive editing and debugging capabilities of Guix provided by the Guile REPL@."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1372
+#: guix-git/doc/guix-cookbook.texi:1395
 msgid "Those fancy features are completely optional and can wait; now is a good time to take a well-deserved break.  With what we've introduced here you should be well armed to package lots of programs.  You can get started right away and hopefully we will see your contributions soon!"
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:1373 guix-git/doc/guix-cookbook.texi:1374
+#: guix-git/doc/guix-cookbook.texi:1396 guix-git/doc/guix-cookbook.texi:1397
 #, no-wrap
 msgid "References"
 msgstr "참조"
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:1379
+#: guix-git/doc/guix-cookbook.texi:1402
 msgid "The @uref{https://www.gnu.org/software/guix/manual/en/html_node/Defining-Packages.html, package reference in the manual}"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:1382
+#: guix-git/doc/guix-cookbook.texi:1405
 msgid "@uref{https://gitlab.com/pjotrp/guix-notes/blob/master/HACKING.org, Pjotr’s hacking guide to GNU Guix}"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:1385
+#: guix-git/doc/guix-cookbook.texi:1408
 msgid "@uref{https://www.gnu.org/software/guix/guix-ghm-andreas-20130823.pdf, ``GNU Guix: Package without a scheme!''}, by Andreas Enge"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1394
+#: guix-git/doc/guix-cookbook.texi:1417
 msgid "Guix offers a flexible language for declaratively configuring your Guix System.  This flexibility can at times be overwhelming.  The purpose of this chapter is to demonstrate some advanced configuration concepts."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1397
+#: guix-git/doc/guix-cookbook.texi:1420
 msgid "@pxref{System Configuration,,, guix, GNU Guix Reference Manual} for a complete reference."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1422
+#: guix-git/doc/guix-cookbook.texi:1445
 msgid "While the Guix manual explains auto-login one user to @emph{all} TTYs ( @pxref{auto-login to TTY,,, guix, GNU Guix Reference Manual}), some might prefer a situation, in which one user is logged into one TTY with the other TTYs either configured to login different users or no one at all.  Note that one can auto-login one user to any TTY, but it is usually advisable to avoid @code{tty1}, which, by default, is used to log warnings and errors."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1424
+#: guix-git/doc/guix-cookbook.texi:1447
 msgid "Here is how one might set up auto login for one user to one tty:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1432
+#: guix-git/doc/guix-cookbook.texi:1455
 #, no-wrap
 msgid ""
 "(define (auto-login-to-tty config tty user)\n"
@@ -2637,7 +2653,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1439
+#: guix-git/doc/guix-cookbook.texi:1462
 #, no-wrap
 msgid ""
 "(define %my-services\n"
@@ -2650,7 +2666,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1443
+#: guix-git/doc/guix-cookbook.texi:1466
 #, no-wrap
 msgid ""
 "(operating-system\n"
@@ -2659,37 +2675,37 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1448
+#: guix-git/doc/guix-cookbook.texi:1471
 msgid "One could also @code{compose} (@pxref{Higher-Order Functions,,, guile, The Guile Reference Manual}) @code{auto-login-to-tty} to login multiple users to multiple ttys."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1455
+#: guix-git/doc/guix-cookbook.texi:1478
 msgid "Finally, here is a note of caution.  Setting up auto login to a TTY, means that anyone can turn on your computer and run commands as your regular user.  However, if you have an encrypted root partition, and thus already need to enter a passphrase when the system boots, auto-login might be a convenient option."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1467
+#: guix-git/doc/guix-cookbook.texi:1490
 msgid "Guix is, at its core, a source based distribution with substitutes (@pxref{Substitutes,,, guix, GNU Guix Reference Manual}), and as such building packages from their source code is an expected part of regular package installations and upgrades.  Given this starting point, it makes sense that efforts are made to reduce the amount of time spent compiling packages, and recent changes and upgrades to the building and distribution of substitutes continues to be a topic of discussion within Guix."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1473
+#: guix-git/doc/guix-cookbook.texi:1496
 msgid "The kernel, while not requiring an overabundance of RAM to build, does take a rather long time on an average machine.  The official kernel configuration, as is the case with many GNU/Linux distributions, errs on the side of inclusiveness, and this is really what causes the build to take such a long time when the kernel is built from source."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1478
+#: guix-git/doc/guix-cookbook.texi:1501
 msgid "The Linux kernel, however, can also just be described as a regular old package, and as such can be customized just like any other package.  The procedure is a little bit different, although this is primarily due to the nature of how the package definition is written."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1481
+#: guix-git/doc/guix-cookbook.texi:1504
 msgid "The @code{linux-libre} kernel package definition is actually a procedure which creates a package."
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1492
+#: guix-git/doc/guix-cookbook.texi:1515
 #, no-wrap
 msgid ""
 "(define* (make-linux-libre* version gnu-revision source supported-systems\n"
@@ -2704,12 +2720,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1496
+#: guix-git/doc/guix-cookbook.texi:1519
 msgid "The current @code{linux-libre} package is for the 5.15.x series, and is declared like this:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1504
+#: guix-git/doc/guix-cookbook.texi:1527
 #, no-wrap
 msgid ""
 "(define-public linux-libre-5.15\n"
@@ -2721,17 +2737,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1511
+#: guix-git/doc/guix-cookbook.texi:1534
 msgid "Any keys which are not assigned values inherit their default value from the @code{make-linux-libre} definition.  When comparing the two snippets above, notice the code comment that refers to @code{#:configuration-file}.  Because of this, it is not actually easy to include a custom kernel configuration from the definition, but don't worry, there are other ways to work with what we do have."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1517
+#: guix-git/doc/guix-cookbook.texi:1540
 msgid "There are two ways to create a kernel with a custom kernel configuration.  The first is to provide a standard @file{.config} file during the build process by including an actual @file{.config} file as a native input to our custom kernel.  The following is a snippet from the custom @code{'configure} phase of the @code{make-linux-libre} package definition:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1521
+#: guix-git/doc/guix-cookbook.texi:1544
 #, no-wrap
 msgid ""
 "(let ((build  (assoc-ref %standard-phases 'build))\n"
@@ -2740,7 +2756,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1529
+#: guix-git/doc/guix-cookbook.texi:1552
 #, no-wrap
 msgid ""
 "  ;; Use a custom kernel configuration file or a default\n"
@@ -2753,12 +2769,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1534
+#: guix-git/doc/guix-cookbook.texi:1557
 msgid "Below is a sample kernel package.  The @code{linux-libre} package is nothing special and can be inherited from and have its fields overridden like any other package:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1543
+#: guix-git/doc/guix-cookbook.texi:1566
 #, no-wrap
 msgid ""
 "(define-public linux-libre/E2140\n"
@@ -2771,17 +2787,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1550
+#: guix-git/doc/guix-cookbook.texi:1573
 msgid "In the same directory as the file defining @code{linux-libre-E2140} is a file named @file{E2140.config}, which is an actual kernel configuration file.  The @code{defconfig} keyword of @code{make-linux-libre} is left blank here, so the only kernel configuration in the package is the one which was included in the @code{native-inputs} field."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1555
+#: guix-git/doc/guix-cookbook.texi:1578
 msgid "The second way to create a custom kernel is to pass a new value to the @code{extra-options} keyword of the @code{make-linux-libre} procedure.  The @code{extra-options} keyword works with another function defined right below it:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1571
+#: guix-git/doc/guix-cookbook.texi:1594
 #, no-wrap
 msgid ""
 "(define %default-extra-linux-options\n"
@@ -2802,7 +2818,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1582
+#: guix-git/doc/guix-cookbook.texi:1605
 #, no-wrap
 msgid ""
 "(define (config->string options)\n"
@@ -2818,12 +2834,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1585
+#: guix-git/doc/guix-cookbook.texi:1608
 msgid "And in the custom configure script from the `make-linux-libre` package:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1593
+#: guix-git/doc/guix-cookbook.texi:1616
 #, no-wrap
 msgid ""
 ";; Appending works even when the option wasn't in the\n"
@@ -2836,18 +2852,18 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1595
+#: guix-git/doc/guix-cookbook.texi:1618
 #, no-wrap
 msgid "(invoke \"make\" \"oldconfig\")\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1600
+#: guix-git/doc/guix-cookbook.texi:1623
 msgid "So by not providing a configuration-file the @file{.config} starts blank, and then we write into it the collection of flags that we want.  Here's another custom kernel:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1608
+#: guix-git/doc/guix-cookbook.texi:1631
 #, no-wrap
 msgid ""
 "(define %macbook41-full-config\n"
@@ -2860,7 +2876,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1619
+#: guix-git/doc/guix-cookbook.texi:1642
 #, no-wrap
 msgid ""
 "(define-public linux-libre-macbook41\n"
@@ -2876,55 +2892,55 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1626
+#: guix-git/doc/guix-cookbook.texi:1649
 msgid "In the above example @code{%file-systems} is a collection of flags enabling different file system support, @code{%efi-support} enables EFI support and @code{%emulation} enables a x86_64-linux machine to act in 32-bit mode also.  @code{%default-extra-linux-options} are the ones quoted above, which had to be added in since they were replaced in the @code{extra-options} keyword."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1635
+#: guix-git/doc/guix-cookbook.texi:1658
 msgid "This all sounds like it should be doable, but how does one even know which modules are required for a particular system? Two places that can be helpful in trying to answer this question is the @uref{https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Kernel, Gentoo Handbook} and the @uref{https://www.kernel.org/doc/html/latest/admin-guide/README.html?highlight=localmodconfig, documentation from the kernel itself}.  From the kernel documentation, it seems that @code{make localmodconfig} is the command we want."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1638
+#: guix-git/doc/guix-cookbook.texi:1661
 msgid "In order to actually run @code{make localmodconfig} we first need to get and unpack the kernel source code:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1641
+#: guix-git/doc/guix-cookbook.texi:1664
 #, no-wrap
 msgid "tar xf $(guix build linux-libre --source)\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1648
+#: guix-git/doc/guix-cookbook.texi:1671
 msgid "Once inside the directory containing the source code run @code{touch .config} to create an initial, empty @file{.config} to start with.  @code{make localmodconfig} works by seeing what you already have in @file{.config} and letting you know what you're missing.  If the file is blank then you're missing everything.  The next step is to run:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1651
+#: guix-git/doc/guix-cookbook.texi:1674
 #, no-wrap
 msgid "guix shell -D linux-libre -- make localmodconfig\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1656
+#: guix-git/doc/guix-cookbook.texi:1679
 msgid "and note the output.  Do note that the @file{.config} file is still empty.  The output generally contains two types of warnings.  The first start with \"WARNING\" and can actually be ignored in our case.  The second read:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1659
+#: guix-git/doc/guix-cookbook.texi:1682
 #, no-wrap
 msgid "module pcspkr did not have configs CONFIG_INPUT_PCSPKR\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1664
+#: guix-git/doc/guix-cookbook.texi:1687
 msgid "For each of these lines, copy the @code{CONFIG_XXXX_XXXX} portion into the @file{.config} in the directory, and append @code{=m}, so in the end it looks like this:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1668
+#: guix-git/doc/guix-cookbook.texi:1691
 #, no-wrap
 msgid ""
 "CONFIG_INPUT_PCSPKR=m\n"
@@ -2932,42 +2948,42 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1677
+#: guix-git/doc/guix-cookbook.texi:1700
 msgid "After copying all the configuration options, run @code{make localmodconfig} again to make sure that you don't have any output starting with ``module''.  After all of these machine specific modules there are a couple more left that are also needed.  @code{CONFIG_MODULES} is necessary so that you can build and load modules separately and not have everything built into the kernel.  @code{CONFIG_BLK_DEV_SD} is required for reading from hard drives.  It is possible that there are other modules which you will need."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1681
+#: guix-git/doc/guix-cookbook.texi:1704
 msgid "This post does not aim to be a guide to configuring your own kernel however, so if you do decide to build a custom kernel you'll have to seek out other guides to create a kernel which is just right for your needs."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1689
+#: guix-git/doc/guix-cookbook.texi:1712
 msgid "The second way to setup the kernel configuration makes more use of Guix's features and allows you to share configuration segments between different kernels.  For example, all machines using EFI to boot have a number of EFI configuration flags that they need.  It is likely that all the kernels will share a list of file systems to support.  By using variables it is easier to see at a glance what features are enabled and to make sure you don't have features in one kernel but missing in another."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1694
+#: guix-git/doc/guix-cookbook.texi:1717
 msgid "Left undiscussed however, is Guix's initrd and its customization.  It is likely that you'll need to modify the initrd on a machine using a custom kernel, since certain modules which are expected to be built may not be available for inclusion into the initrd."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1701
+#: guix-git/doc/guix-cookbook.texi:1724
 msgid "Historically, Guix System is centered around an @code{operating-system} structure.  This structure contains various fields ranging from the bootloader and kernel declaration to the services to install."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1707
+#: guix-git/doc/guix-cookbook.texi:1730
 msgid "Depending on the target machine, that can go from a standard @code{x86_64} machine to a small ARM single board computer such as the Pine64, the image constraints can vary a lot.  The hardware manufacturers will impose different image formats with various partition sizes and offsets."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1712
+#: guix-git/doc/guix-cookbook.texi:1735
 msgid "To create images suitable for all those machines, a new abstraction is necessary: that's the goal of the @code{image} record.  This record contains all the required information to be transformed into a standalone image, that can be directly booted on any target machine."
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1734
+#: guix-git/doc/guix-cookbook.texi:1757
 #, no-wrap
 msgid ""
 "(define-record-type* <image>\n"
@@ -2993,46 +3009,46 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1740
+#: guix-git/doc/guix-cookbook.texi:1763
 msgid "This record contains the operating-system to instantiate. The @code{format} field defines the image type and can be @code{efi-raw}, @code{qcow2} or @code{iso9660} for instance. In the future, it could be extended to @code{docker} or other image types."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1743
+#: guix-git/doc/guix-cookbook.texi:1766
 msgid "A new directory in the Guix sources is dedicated to images definition. For now there are four files:"
 msgstr ""
 
 #. type: file{#1}
-#: guix-git/doc/guix-cookbook.texi:1745
+#: guix-git/doc/guix-cookbook.texi:1768
 #, no-wrap
 msgid "gnu/system/images/hurd.scm"
 msgstr ""
 
 #. type: file{#1}
-#: guix-git/doc/guix-cookbook.texi:1746
+#: guix-git/doc/guix-cookbook.texi:1769
 #, no-wrap
 msgid "gnu/system/images/pine64.scm"
 msgstr ""
 
 #. type: file{#1}
-#: guix-git/doc/guix-cookbook.texi:1747
+#: guix-git/doc/guix-cookbook.texi:1770
 #, no-wrap
 msgid "gnu/system/images/novena.scm"
 msgstr ""
 
 #. type: file{#1}
-#: guix-git/doc/guix-cookbook.texi:1748
+#: guix-git/doc/guix-cookbook.texi:1771
 #, no-wrap
 msgid "gnu/system/images/pinebook-pro.scm"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1754
+#: guix-git/doc/guix-cookbook.texi:1777
 msgid "Let's have a look to @file{pine64.scm}. It contains the @code{pine64-barebones-os} variable which is a minimal definition of an operating-system dedicated to the @b{Pine A64 LTS} board."
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1778
+#: guix-git/doc/guix-cookbook.texi:1801
 #, no-wrap
 msgid ""
 "(define pine64-barebones-os\n"
@@ -3060,17 +3076,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1782
+#: guix-git/doc/guix-cookbook.texi:1805
 msgid "The @code{kernel} and @code{bootloader} fields are pointing to packages dedicated to this board."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1784
+#: guix-git/doc/guix-cookbook.texi:1807
 msgid "Right below, the @code{pine64-image-type} variable is also defined."
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1790
+#: guix-git/doc/guix-cookbook.texi:1813
 #, no-wrap
 msgid ""
 "(define pine64-image-type\n"
@@ -3080,12 +3096,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1794
+#: guix-git/doc/guix-cookbook.texi:1817
 msgid "It's using a record we haven't talked about yet, the @code{image-type} record, defined this way:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1801
+#: guix-git/doc/guix-cookbook.texi:1824
 #, no-wrap
 msgid ""
 "(define-record-type* <image-type>\n"
@@ -3096,39 +3112,39 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1807
+#: guix-git/doc/guix-cookbook.texi:1830
 msgid "The main purpose of this record is to associate a name to a procedure transforming an @code{operating-system} to an image.  To understand why it is necessary, let's have a look to the command producing an image from an @code{operating-system} configuration file:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1810
+#: guix-git/doc/guix-cookbook.texi:1833
 #, no-wrap
 msgid "guix system image my-os.scm\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1816
+#: guix-git/doc/guix-cookbook.texi:1839
 msgid "This command expects an @code{operating-system} configuration but how should we indicate that we want an image targeting a Pine64 board? We need to provide an extra information, the @code{image-type}, by passing the @code{--image-type} or @code{-t} flag, this way:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1819
+#: guix-git/doc/guix-cookbook.texi:1842
 #, no-wrap
 msgid "guix system image --image-type=pine64-raw my-os.scm\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1825
+#: guix-git/doc/guix-cookbook.texi:1848
 msgid "This @code{image-type} parameter points to the @code{pine64-image-type} defined above. Hence, the @code{operating-system} declared in @code{my-os.scm} will be applied the @code{(cut image-with-os arm64-disk-image <>)} procedure to turn it into an image."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1827
+#: guix-git/doc/guix-cookbook.texi:1850
 msgid "The resulting image looks like:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1837
+#: guix-git/doc/guix-cookbook.texi:1860
 #, no-wrap
 msgid ""
 "(image\n"
@@ -3142,22 +3158,22 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1841
+#: guix-git/doc/guix-cookbook.texi:1864
 msgid "which is the aggregation of the @code{operating-system} defined in @code{my-os.scm} to the @code{arm64-disk-image} record."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1843
+#: guix-git/doc/guix-cookbook.texi:1866
 msgid "But enough Scheme madness. What does this image API bring to the Guix user?"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1845
+#: guix-git/doc/guix-cookbook.texi:1868
 msgid "One can run:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1849
+#: guix-git/doc/guix-cookbook.texi:1872
 #, no-wrap
 msgid ""
 "mathieu@@cervin:~$ guix system --list-image-types\n"
@@ -3166,7 +3182,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1861
+#: guix-git/doc/guix-cookbook.texi:1884
 #, no-wrap
 msgid ""
 "   - pinebook-pro-raw\n"
@@ -3183,12 +3199,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1866
+#: guix-git/doc/guix-cookbook.texi:1889
 msgid "and by writing an @code{operating-system} file based on @code{pine64-barebones-os}, you can customize your image to your preferences in a file (@file{my-pine-os.scm}) like this:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1870
+#: guix-git/doc/guix-cookbook.texi:1893
 #, no-wrap
 msgid ""
 "(use-modules (gnu services linux)\n"
@@ -3197,7 +3213,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1881
+#: guix-git/doc/guix-cookbook.texi:1904
 #, no-wrap
 msgid ""
 "(let ((base-os pine64-barebones-os))\n"
@@ -3213,89 +3229,89 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1884
+#: guix-git/doc/guix-cookbook.texi:1907
 msgid "run:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1887
+#: guix-git/doc/guix-cookbook.texi:1910
 #, no-wrap
 msgid "guix system image --image-type=pine64-raw my-pine-os.scm\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1890
+#: guix-git/doc/guix-cookbook.texi:1913
 msgid "or,"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1893
+#: guix-git/doc/guix-cookbook.texi:1916
 #, no-wrap
 msgid "guix system image --image-type=hurd-raw my-hurd-os.scm\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1897
+#: guix-git/doc/guix-cookbook.texi:1920
 msgid "to get an image that can be written directly to a hard drive and booted from."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1899
+#: guix-git/doc/guix-cookbook.texi:1922
 msgid "Without changing anything to @code{my-hurd-os.scm}, calling:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1902
+#: guix-git/doc/guix-cookbook.texi:1925
 #, no-wrap
 msgid "guix system image --image-type=hurd-qcow2 my-hurd-os.scm\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1905
+#: guix-git/doc/guix-cookbook.texi:1928
 msgid "will instead produce a Hurd QEMU image."
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:1908
+#: guix-git/doc/guix-cookbook.texi:1931
 #, no-wrap
 msgid "2FA, two-factor authentication"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:1909
+#: guix-git/doc/guix-cookbook.texi:1932
 #, no-wrap
 msgid "U2F, Universal 2nd Factor"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:1910
+#: guix-git/doc/guix-cookbook.texi:1933
 #, no-wrap
 msgid "security key, configuration"
 msgstr "보안 키, 구성"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1917
+#: guix-git/doc/guix-cookbook.texi:1940
 msgid "The use of security keys can improve your security by providing a second authentication source that cannot be easily stolen or copied, at least for a remote adversary (something that you have), to the main secret (a passphrase -- something that you know), reducing the risk of impersonation."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1922
+#: guix-git/doc/guix-cookbook.texi:1945
 msgid "The example configuration detailed below showcases what minimal configuration needs to be made on your Guix System to allow the use of a Yubico security key.  It is hoped the configuration can be useful for other security keys as well, with minor adjustments."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:1923
+#: guix-git/doc/guix-cookbook.texi:1946
 #, no-wrap
 msgid "Configuration for use as a two-factor authenticator (2FA)"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1931
+#: guix-git/doc/guix-cookbook.texi:1954
 msgid "To be usable, the udev rules of the system should be extended with key-specific rules.  The following shows how to extend your udev rules with the @file{lib/udev/rules.d/70-u2f.rules} udev rule file provided by the @code{libfido2} package from the @code{(gnu packages security-token)} module and add your user to the @samp{\"plugdev\"} group it uses:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1950
+#: guix-git/doc/guix-cookbook.texi:1973
 #, no-wrap
 msgid ""
 "(use-package-modules ... security-token ...)\n"
@@ -3318,33 +3334,33 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1955
+#: guix-git/doc/guix-cookbook.texi:1978
 msgid "After re-configuring your system and re-logging in your graphical session so that the new group is in effect for your user, you can verify that your key is usable by launching:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:1958
+#: guix-git/doc/guix-cookbook.texi:1981
 #, no-wrap
 msgid "guix shell ungoogled-chromium -- chromium chrome://settings/securityKeys\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1964
+#: guix-git/doc/guix-cookbook.texi:1987
 msgid "and validating that the security key can be reset via the ``Reset your security key'' menu.  If it works, congratulations, your security key is ready to be used with applications supporting two-factor authentication (2FA)."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1971
+#: guix-git/doc/guix-cookbook.texi:1994
 msgid "To connect to a Wireguard VPN server you need the kernel module to be loaded in memory and a package providing networking tools that support it (e.g.  @code{wireguard-tools} or @code{network-manager})."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1975
+#: guix-git/doc/guix-cookbook.texi:1998
 msgid "Here is a configuration example for Linux-Libre < 5.6, where the module is out of tree and need to be loaded manually---following revisions of the kernel have it built-in and so don't need such configuration:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1980
+#: guix-git/doc/guix-cookbook.texi:2003
 #, no-wrap
 msgid ""
 "(use-modules (gnu))\n"
@@ -3354,7 +3370,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:1989
+#: guix-git/doc/guix-cookbook.texi:2012
 #, no-wrap
 msgid ""
 "(operating-system\n"
@@ -3368,44 +3384,44 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:1993
+#: guix-git/doc/guix-cookbook.texi:2016
 msgid "After reconfiguring and restarting your system you can either use Wireguard tools or NetworkManager to connect to a VPN server."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:1994
+#: guix-git/doc/guix-cookbook.texi:2017
 #, no-wrap
 msgid "Using Wireguard tools"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2000
+#: guix-git/doc/guix-cookbook.texi:2023
 msgid "To test your Wireguard setup it is convenient to use @command{wg-quick}.  Just give it a configuration file @command{wg-quick up ./wg0.conf}; or put that file in @file{/etc/wireguard} and run @command{wg-quick up wg0} instead."
 msgstr ""
 
 #. type: quotation
-#: guix-git/doc/guix-cookbook.texi:2004
+#: guix-git/doc/guix-cookbook.texi:2027
 msgid "Be warned that the author described this command as a: “[…] very quick and dirty bash script […]”."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:2006
+#: guix-git/doc/guix-cookbook.texi:2029
 #, no-wrap
 msgid "Using NetworkManager"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2014
+#: guix-git/doc/guix-cookbook.texi:2037
 msgid "Thanks to NetworkManager support for Wireguard we can connect to our VPN using @command{nmcli} command.  Up to this point this guide assumes that you're using Network Manager service provided by @code{%desktop-services}.  Ortherwise you need to adjust your services list to load @code{network-manager-service-type} and reconfigure your Guix system."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2016
+#: guix-git/doc/guix-cookbook.texi:2039
 msgid "To import your VPN configuration execute nmcli import command:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2020
+#: guix-git/doc/guix-cookbook.texi:2043
 #, no-wrap
 msgid ""
 "# nmcli connection import type wireguard file wg0.conf\n"
@@ -3413,12 +3429,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2025
+#: guix-git/doc/guix-cookbook.texi:2048
 msgid "This will create a configuration file in @file{/etc/NetworkManager/wg0.nmconnection}.  Next connect to the Wireguard server:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2029
+#: guix-git/doc/guix-cookbook.texi:2052
 #, no-wrap
 msgid ""
 "$ nmcli connection up wg0\n"
@@ -3426,51 +3442,51 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2033
+#: guix-git/doc/guix-cookbook.texi:2056
 msgid "By default NetworkManager will connect automatically on system boot.  To change that behaviour you need to edit your config:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2036
+#: guix-git/doc/guix-cookbook.texi:2059
 #, no-wrap
 msgid "# nmcli connection modify wg0 connection.autoconnect no\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2041
+#: guix-git/doc/guix-cookbook.texi:2064
 msgid "For more specific information about NetworkManager and wireguard @uref{https://blogs.gnome.org/thaller/2019/03/15/wireguard-in-networkmanager/,see this post by thaller}."
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2044
+#: guix-git/doc/guix-cookbook.texi:2067
 #, no-wrap
 msgid "wm"
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:2046 guix-git/doc/guix-cookbook.texi:2047
+#: guix-git/doc/guix-cookbook.texi:2069 guix-git/doc/guix-cookbook.texi:2070
 #, no-wrap
 msgid "StumpWM"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2048
+#: guix-git/doc/guix-cookbook.texi:2071
 #, no-wrap
 msgid "stumpwm"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2053
+#: guix-git/doc/guix-cookbook.texi:2076
 msgid "You could install StumpWM with a Guix system by adding @code{stumpwm} and optionally @code{`(,stumpwm \"lib\")} packages to a system configuration file, e.g.@: @file{/etc/config.scm}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2055
+#: guix-git/doc/guix-cookbook.texi:2078
 msgid "An example configuration can look like this:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2059
+#: guix-git/doc/guix-cookbook.texi:2082
 #, no-wrap
 msgid ""
 "(use-modules (gnu))\n"
@@ -3479,7 +3495,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2064
+#: guix-git/doc/guix-cookbook.texi:2087
 #, no-wrap
 msgid ""
 "(operating-system\n"
@@ -3489,18 +3505,18 @@ msgid ""
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2066
+#: guix-git/doc/guix-cookbook.texi:2089
 #, no-wrap
 msgid "stumpwm fonts"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2070
+#: guix-git/doc/guix-cookbook.texi:2093
 msgid "By default StumpWM uses X11 fonts, which could be small or pixelated on your system.  You could fix this by installing StumpWM contrib Lisp module @code{sbcl-ttf-fonts}, adding it to Guix system packages:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2074
+#: guix-git/doc/guix-cookbook.texi:2097
 #, no-wrap
 msgid ""
 "(use-modules (gnu))\n"
@@ -3509,7 +3525,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2079
+#: guix-git/doc/guix-cookbook.texi:2102
 #, no-wrap
 msgid ""
 "(operating-system\n"
@@ -3519,12 +3535,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2083
+#: guix-git/doc/guix-cookbook.texi:2106
 msgid "Then you need to add the following code to a StumpWM configuration file @file{~/.stumpwm.d/init.lisp}:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2090
+#: guix-git/doc/guix-cookbook.texi:2113
 #, no-wrap
 msgid ""
 "(require :ttf-fonts)\n"
@@ -3535,40 +3551,40 @@ msgid ""
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:2092 guix-git/doc/guix-cookbook.texi:2093
+#: guix-git/doc/guix-cookbook.texi:2115 guix-git/doc/guix-cookbook.texi:2116
 #, no-wrap
 msgid "Session lock"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2094
+#: guix-git/doc/guix-cookbook.texi:2117
 #, no-wrap
 msgid "sessionlock"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2100
+#: guix-git/doc/guix-cookbook.texi:2123
 msgid "Depending on your environment, locking the screen of your session might come built in or it might be something you have to set up yourself. If you use a desktop environment like GNOME or KDE, it's usually built in. If you use a plain window manager like StumpWM or EXWM, you might have to set it up yourself."
 msgstr ""
 
 #. type: subsubsection
-#: guix-git/doc/guix-cookbook.texi:2101 guix-git/doc/guix-cookbook.texi:2102
+#: guix-git/doc/guix-cookbook.texi:2124 guix-git/doc/guix-cookbook.texi:2125
 #, no-wrap
 msgid "Xorg"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2108
+#: guix-git/doc/guix-cookbook.texi:2131
 msgid "If you use Xorg, you can use the utility @uref{https://www.mankier.com/1/xss-lock, xss-lock} to lock the screen of your session.  xss-lock is triggered by DPMS which since Xorg 1.8 is auto-detected and enabled if ACPI is also enabled at kernel runtime."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2111
+#: guix-git/doc/guix-cookbook.texi:2134
 msgid "To use xss-lock, you can simple execute it and put it into the background before you start your window manager from e.g. your @file{~/.xsession}:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2115
+#: guix-git/doc/guix-cookbook.texi:2138
 #, no-wrap
 msgid ""
 "xss-lock -- slock &\n"
@@ -3576,131 +3592,131 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2119
+#: guix-git/doc/guix-cookbook.texi:2142
 msgid "In this example, xss-lock uses @code{slock} to do the actual locking of the screen when it determines it's appropriate, like when you suspend your device."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2123
+#: guix-git/doc/guix-cookbook.texi:2146
 msgid "For slock to be allowed to be a screen locker for the graphical session, it needs to be made setuid-root so it can authenticate users, and it needs a PAM service. This can be achieved by adding the following service to your @file{config.scm}:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2126
+#: guix-git/doc/guix-cookbook.texi:2149
 #, no-wrap
 msgid "(screen-locker-service slock)\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2132
+#: guix-git/doc/guix-cookbook.texi:2155
 msgid "If you manually lock your screen, e.g. by directly calling slock when you want to lock your screen but not suspend it, it's a good idea to notify xss-lock about this so no confusion occurs. This can be done by executing @code{xset s activate} immediately before you execute slock."
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2135
+#: guix-git/doc/guix-cookbook.texi:2158
 #, no-wrap
 msgid "linode, Linode"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2140
+#: guix-git/doc/guix-cookbook.texi:2163
 msgid "To run Guix on a server hosted by @uref{https://www.linode.com, Linode}, start with a recommended Debian server.  We recommend using the default distro as a way to bootstrap Guix. Create your SSH keys."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2143
+#: guix-git/doc/guix-cookbook.texi:2166
 #, no-wrap
 msgid "ssh-keygen\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2149
+#: guix-git/doc/guix-cookbook.texi:2172
 msgid "Be sure to add your SSH key for easy login to the remote server.  This is trivially done via Linode's graphical interface for adding SSH keys.  Go to your profile and click add SSH Key.  Copy into it the output of:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2152
+#: guix-git/doc/guix-cookbook.texi:2175
 #, no-wrap
 msgid "cat ~/.ssh/<username>_rsa.pub\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2155
+#: guix-git/doc/guix-cookbook.texi:2178
 msgid "Power the Linode down."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2159
+#: guix-git/doc/guix-cookbook.texi:2182
 msgid "In the Linode's Storage tab, resize the Debian disk to be smaller.  30 GB free space is recommended.  Then click \"Add a disk\", and fill out the form with the following:"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:2163
+#: guix-git/doc/guix-cookbook.texi:2186
 msgid "Label: \"Guix\""
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:2166
+#: guix-git/doc/guix-cookbook.texi:2189
 msgid "Filesystem: ext4"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:2169
+#: guix-git/doc/guix-cookbook.texi:2192
 msgid "Set it to the remaining size"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2174
+#: guix-git/doc/guix-cookbook.texi:2197
 msgid "In the Configurations tab, press \"Edit\" on the default Debian profile.  Under \"Block Device Assignment\" click \"Add a Device\". It should be @file{/dev/sdc} and you can select the \"Guix\" disk. Save Changes."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2176
+#: guix-git/doc/guix-cookbook.texi:2199
 msgid "Now \"Add a Configuration\", with the following:"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:2179
+#: guix-git/doc/guix-cookbook.texi:2202
 msgid "Label: Guix"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:2182
+#: guix-git/doc/guix-cookbook.texi:2205
 msgid "Kernel:GRUB 2 (it's at the bottom! This step is @b{IMPORTANT!})"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:2185
+#: guix-git/doc/guix-cookbook.texi:2208
 msgid "Block device assignment:"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:2188
+#: guix-git/doc/guix-cookbook.texi:2211
 msgid "@file{/dev/sda}: Guix"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:2191
+#: guix-git/doc/guix-cookbook.texi:2214
 msgid "@file{/dev/sdb}: swap"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:2194
+#: guix-git/doc/guix-cookbook.texi:2217
 msgid "Root device: @file{/dev/sda}"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:2197
+#: guix-git/doc/guix-cookbook.texi:2220
 msgid "Turn off all the filesystem/boot helpers"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2204
+#: guix-git/doc/guix-cookbook.texi:2227
 msgid "Now power it back up, booting with the Debian configuration.  Once it's running, ssh to your server via @code{ssh root@@@var{<your-server-IP-here>}}. (You can find your server IP address in your Linode Summary section.) Now you can run the \"install guix from @pxref{Binary Installation,,, guix, GNU Guix}\" steps:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2212
+#: guix-git/doc/guix-cookbook.texi:2235
 #, no-wrap
 msgid ""
 "sudo apt-get install gpg\n"
@@ -3712,12 +3728,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2216
+#: guix-git/doc/guix-cookbook.texi:2239
 msgid "Now it's time to write out a config for the server.  The key information is below. Save the resulting file as @file{guix-config.scm}."
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2227
+#: guix-git/doc/guix-cookbook.texi:2250
 #, no-wrap
 msgid ""
 "(use-modules (gnu)\n"
@@ -3733,7 +3749,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2244
+#: guix-git/doc/guix-cookbook.texi:2267
 #, no-wrap
 msgid ""
 "(operating-system\n"
@@ -3756,7 +3772,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2247
+#: guix-git/doc/guix-cookbook.texi:2270
 #, no-wrap
 msgid ""
 "  (swap-devices (list \"/dev/sdb\"))\n"
@@ -3764,7 +3780,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2251
+#: guix-git/doc/guix-cookbook.texi:2274
 #, no-wrap
 msgid ""
 "  (initrd-modules (cons \"virtio_scsi\"    ; Needed to find the disk\n"
@@ -3773,7 +3789,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2260
+#: guix-git/doc/guix-cookbook.texi:2283
 #, no-wrap
 msgid ""
 "  (users (cons (user-account\n"
@@ -3788,7 +3804,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2264
+#: guix-git/doc/guix-cookbook.texi:2287
 #, no-wrap
 msgid ""
 "  (packages (cons* nss-certs            ;for HTTPS access\n"
@@ -3798,7 +3814,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2275
+#: guix-git/doc/guix-cookbook.texi:2298
 #, no-wrap
 msgid ""
 "  (services (cons*\n"
@@ -3814,12 +3830,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2278
+#: guix-git/doc/guix-cookbook.texi:2301
 msgid "Replace the following fields in the above configuration:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2286
+#: guix-git/doc/guix-cookbook.texi:2309
 #, no-wrap
 msgid ""
 "(host-name \"my-server\")       ; replace with your server name\n"
@@ -3832,17 +3848,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2293
+#: guix-git/doc/guix-cookbook.texi:2316
 msgid "The last line in the above example lets you log into the server as root and set the initial root password (see the note at the end of this recipe about root login).  After you have done this, you may delete that line from your configuration and reconfigure to prevent root login."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2298
+#: guix-git/doc/guix-cookbook.texi:2321
 msgid "Copy your ssh public key (eg: @file{~/.ssh/id_rsa.pub}) as @file{@var{<your-username-here>}_rsa.pub} and put @file{guix-config.scm} in the same directory.  In a new terminal run these commands."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2303
+#: guix-git/doc/guix-cookbook.texi:2326
 #, no-wrap
 msgid ""
 "sftp root@@<remote server ip address>\n"
@@ -3851,12 +3867,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2306
+#: guix-git/doc/guix-cookbook.texi:2329
 msgid "In your first terminal, mount the guix drive:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2310
+#: guix-git/doc/guix-cookbook.texi:2333
 #, no-wrap
 msgid ""
 "mkdir /mnt/guix\n"
@@ -3864,12 +3880,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2315
+#: guix-git/doc/guix-cookbook.texi:2338
 msgid "Due to the way we set up the bootloader section of the guix-config.scm, only the grub configuration file will be installed.  So, we need to copy over some of the other GRUB stuff already installed on the Debian system:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2319
+#: guix-git/doc/guix-cookbook.texi:2342
 #, no-wrap
 msgid ""
 "mkdir -p /mnt/guix/boot/grub\n"
@@ -3877,28 +3893,28 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2322
+#: guix-git/doc/guix-cookbook.texi:2345
 msgid "Now initialize the Guix installation:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2325
+#: guix-git/doc/guix-cookbook.texi:2348
 #, no-wrap
 msgid "guix system init guix-config.scm /mnt/guix\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2329
+#: guix-git/doc/guix-cookbook.texi:2352
 msgid "Ok, power it down! Now from the Linode console, select boot and select \"Guix\"."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2332
+#: guix-git/doc/guix-cookbook.texi:2355
 msgid "Once it boots, you should be able to log in via SSH! (The server config will have changed though.)  You may encounter an error like:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2348
+#: guix-git/doc/guix-cookbook.texi:2371
 #, no-wrap
 msgid ""
 "$ ssh root@@<server ip address>\n"
@@ -3918,17 +3934,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2352
+#: guix-git/doc/guix-cookbook.texi:2375
 msgid "Either delete @file{~/.ssh/known_hosts} file, or delete the offending line starting with your server IP address."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2354
+#: guix-git/doc/guix-cookbook.texi:2377
 msgid "Be sure to set your password and root's password."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2359
+#: guix-git/doc/guix-cookbook.texi:2382
 #, no-wrap
 msgid ""
 "ssh root@@<remote ip address>\n"
@@ -3937,32 +3953,32 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2366
+#: guix-git/doc/guix-cookbook.texi:2389
 msgid "You may not be able to run the above commands at this point.  If you have issues remotely logging into your linode box via SSH, then you may still need to set your root and user password initially by clicking on the ``Launch Console'' option in your linode.  Choose the ``Glish'' instead of ``Weblish''.  Now you should be able to ssh into the machine."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2370
+#: guix-git/doc/guix-cookbook.texi:2393
 msgid "Hooray! At this point you can shut down the server, delete the Debian disk, and resize the Guix to the rest of the size.  Congratulations!"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2375
+#: guix-git/doc/guix-cookbook.texi:2398
 msgid "By the way, if you save it as a disk image right at this point, you'll have an easy time spinning up new Guix images! You may need to down-size the Guix image to 6144MB, to save it as an image.  Then you can resize it again to the max size."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2384
+#: guix-git/doc/guix-cookbook.texi:2407
 msgid "To bind mount a file system, one must first set up some definitions before the @code{operating-system} section of the system definition.  In this example we will bind mount a folder from a spinning disk drive to @file{/tmp}, to save wear and tear on the primary SSD, without dedicating an entire partition to be mounted as @file{/tmp}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2387
+#: guix-git/doc/guix-cookbook.texi:2410
 msgid "First, the source drive that hosts the folder we wish to bind mount should be defined, so that the bind mount can depend on it."
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2394
+#: guix-git/doc/guix-cookbook.texi:2417
 #, no-wrap
 msgid ""
 "(define source-drive ;; \"source-drive\" can be named anything you want.\n"
@@ -3973,23 +3989,23 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2398
+#: guix-git/doc/guix-cookbook.texi:2421
 msgid "The source folder must also be defined, so that guix will know it's not a regular block device, but a folder."
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2400
+#: guix-git/doc/guix-cookbook.texi:2423
 #, no-wrap
 msgid "(define (%source-directory) \"/path-to-spinning-disk-goes-here/tmp\") ;; \"source-directory\" can be named any valid variable name.\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2404
+#: guix-git/doc/guix-cookbook.texi:2427
 msgid "Finally, inside the @code{file-systems} definition, we must add the mount itself."
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2407
+#: guix-git/doc/guix-cookbook.texi:2430
 #, no-wrap
 msgid ""
 "(file-systems (cons*\n"
@@ -3997,7 +4013,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2409
+#: guix-git/doc/guix-cookbook.texi:2432
 #, no-wrap
 msgid ""
 "                ...<other drives omitted for clarity>...\n"
@@ -4005,7 +4021,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2411
+#: guix-git/doc/guix-cookbook.texi:2434
 #, no-wrap
 msgid ""
 "                source-drive ;; Must match the name you gave the source drive in the earlier definition.\n"
@@ -4013,7 +4029,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2419
+#: guix-git/doc/guix-cookbook.texi:2442
 #, no-wrap
 msgid ""
 "                (file-system\n"
@@ -4027,7 +4043,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2421
+#: guix-git/doc/guix-cookbook.texi:2444
 #, no-wrap
 msgid ""
 "                 ...<other drives omitted for clarity>...\n"
@@ -4035,39 +4051,39 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2423
+#: guix-git/doc/guix-cookbook.texi:2446
 #, no-wrap
 msgid "                ))\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2430
+#: guix-git/doc/guix-cookbook.texi:2453
 msgid "Guix daemon can use a HTTP proxy to get substitutes, here we are configuring it to get them via Tor."
 msgstr ""
 
 #. type: quotation
-#: guix-git/doc/guix-cookbook.texi:2431
+#: guix-git/doc/guix-cookbook.texi:2454
 #, no-wrap
 msgid "Warning"
 msgstr "경고"
 
 #. type: quotation
-#: guix-git/doc/guix-cookbook.texi:2437
+#: guix-git/doc/guix-cookbook.texi:2460
 msgid "@emph{Not all} Guix daemon's traffic will go through Tor! Only HTTP/HTTPS will get proxied; FTP, Git protocol, SSH, etc connections will still go through the clearnet.  Again, this configuration isn't foolproof some of your traffic won't get routed by Tor at all.  Use it at your own risk."
 msgstr ""
 
 #. type: quotation
-#: guix-git/doc/guix-cookbook.texi:2443
+#: guix-git/doc/guix-cookbook.texi:2466
 msgid "Also note that the procedure described here applies only to package substitution. When you update your guix distribution with @command{guix pull}, you still need to use @command{torsocks} if you want to route the connection to guix's git repository servers through Tor."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2448
+#: guix-git/doc/guix-cookbook.texi:2471
 msgid "Guix's substitute server is available as a Onion service, if you want to use it to get your substitutes through Tor configure your system as follow:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2452
+#: guix-git/doc/guix-cookbook.texi:2475
 #, no-wrap
 msgid ""
 "(use-modules (gnu))\n"
@@ -4076,7 +4092,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2469
+#: guix-git/doc/guix-cookbook.texi:2492
 #, no-wrap
 msgid ""
 "(operating-system\n"
@@ -4098,17 +4114,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2478
+#: guix-git/doc/guix-cookbook.texi:2501
 msgid "This will keep a tor process running that provides a HTTP CONNECT tunnel which will be used by @command{guix-daemon}.  The daemon can use other protocols than HTTP(S) to get remote resources, request using those protocols won't go through Tor since we are only setting a HTTP tunnel here.  Note that @code{substitutes-urls} is using HTTPS and not HTTP or it won't work, that's a limitation of Tor's tunnel; you may want to use @command{privoxy} instead to avoid such limitations."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2482
+#: guix-git/doc/guix-cookbook.texi:2505
 msgid "If you don't want to always get substitutes through Tor but using it just some of the times, then skip the @code{guix-configuration}.  When you want to get a substitute from the Tor tunnel run:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2487
+#: guix-git/doc/guix-cookbook.texi:2510
 #, no-wrap
 msgid ""
 "sudo herd set-http-proxy guix-daemon http://localhost:9250\n"
@@ -4117,28 +4133,28 @@ msgid ""
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2491
+#: guix-git/doc/guix-cookbook.texi:2514
 #, no-wrap
 msgid "nginx, lua, openresty, resty"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2494
+#: guix-git/doc/guix-cookbook.texi:2517
 msgid "NGINX could be extended with Lua scripts."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2497
+#: guix-git/doc/guix-cookbook.texi:2520
 msgid "Guix provides NGINX service with ability to load Lua module and specific Lua packages, and reply to requests by evaluating Lua scripts."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2501
+#: guix-git/doc/guix-cookbook.texi:2524
 msgid "The following example demonstrates system definition with configuration to evaluate @file{index.lua} Lua script on HTTP request to @uref{http://localhost/hello} endpoint:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2504
+#: guix-git/doc/guix-cookbook.texi:2527
 #, no-wrap
 msgid ""
 "local shell = require \"resty.shell\"\n"
@@ -4146,7 +4162,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2508
+#: guix-git/doc/guix-cookbook.texi:2531
 #, no-wrap
 msgid ""
 "local stdin = \"\"\n"
@@ -4156,7 +4172,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2511
+#: guix-git/doc/guix-cookbook.texi:2534
 #, no-wrap
 msgid ""
 "local ok, stdout, stderr, reason, status =\n"
@@ -4165,13 +4181,13 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2513
+#: guix-git/doc/guix-cookbook.texi:2536
 #, no-wrap
 msgid "ngx.say(stdout)\n"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2544
+#: guix-git/doc/guix-cookbook.texi:2567
 #, no-wrap
 msgid ""
 "(use-modules (gnu))\n"
@@ -4205,45 +4221,45 @@ msgid ""
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2548
+#: guix-git/doc/guix-cookbook.texi:2571
 #, no-wrap
 msgid "mpd"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2549
+#: guix-git/doc/guix-cookbook.texi:2572
 #, no-wrap
 msgid "music server, headless"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2550
+#: guix-git/doc/guix-cookbook.texi:2573
 #, no-wrap
 msgid "bluetooth, ALSA configuration"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2557
+#: guix-git/doc/guix-cookbook.texi:2580
 msgid "MPD, the Music Player Daemon, is a flexible server-side application for playing music.  Client programs on different machines on the network --- a mobile phone, a laptop, a desktop workstation --- can connect to it to control the playback of audio files from your local music collection.  MPD decodes the audio files and plays them back on one or many outputs."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2564
+#: guix-git/doc/guix-cookbook.texi:2587
 msgid "By default MPD will play to the default audio device.  In the example below we make things a little more interesting by setting up a headless music server.  There will be no graphical user interface, no Pulseaudio daemon, and no local audio output.  Instead we will configure MPD with two outputs: a bluetooth speaker and a web server to serve audio streams to any streaming media player."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2570
+#: guix-git/doc/guix-cookbook.texi:2593
 msgid "Bluetooth is often rather frustrating to set up.  You will have to pair your Bluetooth device and make sure that the device is automatically connected as soon as it powers on.  The Bluetooth system service returned by the @code{bluetooth-service} procedure provides the infrastructure needed to set this up."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2573
+#: guix-git/doc/guix-cookbook.texi:2596
 msgid "Reconfigure your system with at least the following services and packages:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2583
+#: guix-git/doc/guix-cookbook.texi:2606
 #, no-wrap
 msgid ""
 "(operating-system\n"
@@ -4257,12 +4273,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2590
+#: guix-git/doc/guix-cookbook.texi:2613
 msgid "Start the @code{bluetooth} service and then use @command{bluetoothctl} to scan for Bluetooth devices.  Try to identify your Bluetooth speaker and pick out its device ID from the resulting list of devices that is indubitably dominated by a baffling smorgasbord of your neighbors' home automation gizmos.  This only needs to be done once:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2594
+#: guix-git/doc/guix-cookbook.texi:2617
 #, no-wrap
 msgid ""
 "$ bluetoothctl \n"
@@ -4271,7 +4287,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2597
+#: guix-git/doc/guix-cookbook.texi:2620
 #, no-wrap
 msgid ""
 "[bluetooth]# power on\n"
@@ -4280,7 +4296,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2600
+#: guix-git/doc/guix-cookbook.texi:2623
 #, no-wrap
 msgid ""
 "[bluetooth]# agent on\n"
@@ -4289,7 +4305,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2603
+#: guix-git/doc/guix-cookbook.texi:2626
 #, no-wrap
 msgid ""
 "[bluetooth]# default-agent\n"
@@ -4298,7 +4314,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2610
+#: guix-git/doc/guix-cookbook.texi:2633
 #, no-wrap
 msgid ""
 "[bluetooth]# scan on\n"
@@ -4311,7 +4327,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2614
+#: guix-git/doc/guix-cookbook.texi:2637
 #, no-wrap
 msgid ""
 "[bluetooth]# pair AA:BB:CC:A4:AA:CD\n"
@@ -4321,7 +4337,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2620
+#: guix-git/doc/guix-cookbook.texi:2643
 #, no-wrap
 msgid ""
 "[My Bluetooth Speaker]# [CHG] Device AA:BB:CC:A4:AA:CD UUIDs: 0000110b-0000-1000-8000-00xxxxxxxxxx\n"
@@ -4333,7 +4349,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2622
+#: guix-git/doc/guix-cookbook.texi:2645
 #, no-wrap
 msgid ""
 "[CHG] Device AA:BB:CC:A4:AA:CD Connected: no\n"
@@ -4341,7 +4357,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2627
+#: guix-git/doc/guix-cookbook.texi:2650
 #, no-wrap
 msgid ""
 "[bluetooth]# \n"
@@ -4352,7 +4368,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2634
+#: guix-git/doc/guix-cookbook.texi:2657
 #, no-wrap
 msgid ""
 "[bluetooth]# \n"
@@ -4365,7 +4381,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2639
+#: guix-git/doc/guix-cookbook.texi:2662
 #, no-wrap
 msgid ""
 "[My Bluetooth Speaker]# scan off\n"
@@ -4375,27 +4391,27 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2643
+#: guix-git/doc/guix-cookbook.texi:2666
 msgid "Congratulations, you can now automatically connect to your Bluetooth speaker!"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2653
+#: guix-git/doc/guix-cookbook.texi:2676
 msgid "It is now time to configure ALSA to use the @emph{bluealsa} Bluetooth module, so that you can define an ALSA pcm device corresponding to your Bluetooth speaker.  For a headless server using @emph{bluealsa} with a fixed Bluetooth device is likely simpler than configuring Pulseaudio and its stream switching behavior.  We configure ALSA by crafting a custom @code{alsa-configuration} for the @code{alsa-service-type}.  The configuration will declare a @code{pcm} type @code{bluealsa} from the @code{bluealsa} module provided by the @code{bluez-alsa} package, and then define a @code{pcm} device of that type for your Bluetooth speaker."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2660
+#: guix-git/doc/guix-cookbook.texi:2683
 msgid "All that is left then is to make MPD send audio data to this ALSA device.  We also add a secondary MPD output that makes the currently played audio files available as a stream through a web server on port 8080.  When enabled a device on the network could listen to the audio stream by connecting any capable media player to the HTTP server on port 8080, independent of the status of the Bluetooth speaker."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2663
+#: guix-git/doc/guix-cookbook.texi:2686
 msgid "What follows is the outline of an @code{operating-system} declaration that should accomplish the above-mentioned tasks:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2711
+#: guix-git/doc/guix-cookbook.texi:2734
 #, no-wrap
 msgid ""
 "(use-modules (gnu))\n"
@@ -4448,7 +4464,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2716
+#: guix-git/doc/guix-cookbook.texi:2739
 #, no-wrap
 msgid ""
 "# Declare control device type \\\"bluealsa\\\" from the same module\n"
@@ -4459,7 +4475,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2723
+#: guix-git/doc/guix-cookbook.texi:2746
 #, no-wrap
 msgid ""
 "# Define the actual Bluetooth audio device.\n"
@@ -4472,7 +4488,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2729
+#: guix-git/doc/guix-cookbook.texi:2752
 #, no-wrap
 msgid ""
 "# Define an associated controller.\n"
@@ -4483,48 +4499,48 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2733
+#: guix-git/doc/guix-cookbook.texi:2756
 msgid "Enjoy the music with the MPD client of your choice or a media player capable of streaming via HTTP!"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2746
+#: guix-git/doc/guix-cookbook.texi:2769
 msgid "The kernel Linux provides a number of shared facilities that are available to processes in the system.  These facilities include a shared view on the file system, other processes, network devices, user and group identities, and a few others.  Since Linux 3.19 a user can choose to @emph{unshare} some of these shared facilities for selected processes, providing them (and their child processes) with a different view on the system."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2752
+#: guix-git/doc/guix-cookbook.texi:2775
 msgid "A process with an unshared @code{mount} namespace, for example, has its own view on the file system --- it will only be able to see directories that have been explicitly bound in its mount namespace.  A process with its own @code{proc} namespace will consider itself to be the only process running on the system, running as PID 1."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2759
+#: guix-git/doc/guix-cookbook.texi:2782
 msgid "Guix uses these kernel features to provide fully isolated environments and even complete Guix System containers, lightweight virtual machines that share the host system's kernel.  This feature comes in especially handy when using Guix on a foreign distribution to prevent interference from foreign libraries or configuration files that are available system-wide."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2771
+#: guix-git/doc/guix-cookbook.texi:2794
 msgid "The easiest way to get started is to use @command{guix shell} with the @option{--container} option.  @xref{Invoking guix shell,,, guix, GNU Guix Reference Manual} for a reference of valid options."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2778
+#: guix-git/doc/guix-cookbook.texi:2801
 msgid "The following snippet spawns a minimal shell process with most namespaces unshared from the system.  The current working directory is visible to the process, but anything else on the file system is unavailable.  This extreme isolation can be very useful when you want to rule out any sort of interference from environment variables, globally installed libraries, or configuration files."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2781
+#: guix-git/doc/guix-cookbook.texi:2804
 #, no-wrap
 msgid "guix shell --container\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2788
+#: guix-git/doc/guix-cookbook.texi:2811
 msgid "It is a bleak environment, barren, desolate.  You will find that not even the GNU coreutils are available here, so to explore this deserted wasteland you need to use built-in shell commands.  Even the usually gigantic @file{/gnu/store} directory is reduced to a faint shadow of itself."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2798
+#: guix-git/doc/guix-cookbook.texi:2821
 #, no-wrap
 msgid ""
 "$ echo /gnu/store/*\n"
@@ -4538,41 +4554,41 @@ msgid ""
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2800
+#: guix-git/doc/guix-cookbook.texi:2823
 #, no-wrap
 msgid "exiting a container"
 msgstr "컨테이너 나가기"
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2804
+#: guix-git/doc/guix-cookbook.texi:2827
 msgid "There isn't much you can do in an environment like this other than exiting it.  You can use @key{^D} or @command{exit} to terminate this limited shell environment."
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2805
+#: guix-git/doc/guix-cookbook.texi:2828
 #, no-wrap
 msgid "exposing directories, container"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2806
+#: guix-git/doc/guix-cookbook.texi:2829
 #, no-wrap
 msgid "sharing directories, container"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2807
+#: guix-git/doc/guix-cookbook.texi:2830
 #, no-wrap
 msgid "mapping locations, container"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2816
+#: guix-git/doc/guix-cookbook.texi:2839
 msgid "You can make other directories available inside of the container environment; use @option{--expose=DIRECTORY} to bind-mount the given directory as a read-only location inside the container, or use @option{--share=DIRECTORY} to make the location writable.  With an additional mapping argument after the directory name you can control the name of the directory inside the container.  In the following example we map @file{/etc} on the host system to @file{/the/host/etc} inside a container in which the GNU coreutils are installed."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2820
+#: guix-git/doc/guix-cookbook.texi:2843
 #, no-wrap
 msgid ""
 "$ guix shell --container --share=/etc=/the/host/etc coreutils\n"
@@ -4580,34 +4596,34 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2827
+#: guix-git/doc/guix-cookbook.texi:2850
 msgid "Similarly, you can prevent the current working directory from being mapped into the container with the @option{--no-cwd} option.  Another good idea is to create a dedicated directory that will serve as the container's home directory, and spawn the container shell from that directory."
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2828
+#: guix-git/doc/guix-cookbook.texi:2851
 #, no-wrap
 msgid "hide system libraries, container"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:2829
+#: guix-git/doc/guix-cookbook.texi:2852
 #, no-wrap
 msgid "avoid ABI mismatch, container"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2839
+#: guix-git/doc/guix-cookbook.texi:2862
 msgid "On a foreign system a container environment can be used to compile software that cannot possibly be linked with system libraries or with the system's compiler toolchain.  A common use-case in a research context is to install packages from within an R session.  Outside of a container environment there is a good chance that the foreign compiler toolchain and incompatible system libraries are found first, resulting in incompatible binaries that cannot be used by R.  In a container shell this problem disappears, as system libraries and executables simply aren't available due to the unshared @code{mount} namespace."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2842
+#: guix-git/doc/guix-cookbook.texi:2865
 msgid "Let's take a comprehensive manifest providing a comfortable development environment for use with R:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2846
+#: guix-git/doc/guix-cookbook.texi:2869
 #, no-wrap
 msgid ""
 "(specifications->manifest\n"
@@ -4616,7 +4632,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2851
+#: guix-git/doc/guix-cookbook.texi:2874
 #, no-wrap
 msgid ""
 "        ;; base packages\n"
@@ -4627,7 +4643,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2858
+#: guix-git/doc/guix-cookbook.texi:2881
 #, no-wrap
 msgid ""
 "        ;; Common command line tools lest the container is too empty.\n"
@@ -4640,7 +4656,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2861
+#: guix-git/doc/guix-cookbook.texi:2884
 #, no-wrap
 msgid ""
 "        ;; R markdown tools\n"
@@ -4649,7 +4665,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2877
+#: guix-git/doc/guix-cookbook.texi:2900
 #, no-wrap
 msgid ""
 "        ;; Toolchain and common libraries for \"install.packages\"\n"
@@ -4670,12 +4686,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2883
+#: guix-git/doc/guix-cookbook.texi:2906
 msgid "Let's use this to run R inside a container environment.  For convenience we share the @code{net} namespace to use the host system's network interfaces.  Now we can build R packages from source the traditional way without having to worry about ABI mismatch or incompatibilities."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2886
+#: guix-git/doc/guix-cookbook.texi:2909
 #, no-wrap
 msgid ""
 "$ guix shell --container --network --manifest=manifest.scm -- R\n"
@@ -4683,7 +4699,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2899
+#: guix-git/doc/guix-cookbook.texi:2922
 #, no-wrap
 msgid ""
 "R version 4.2.1 (2022-06-23) -- \"Funny-Looking Kid\"\n"
@@ -4702,7 +4718,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:2904
+#: guix-git/doc/guix-cookbook.texi:2927
 #, no-wrap
 msgid ""
 "The downloaded source packages are in\n"
@@ -4712,38 +4728,38 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2912
+#: guix-git/doc/guix-cookbook.texi:2935
 msgid "Using container shells is fun, but they can become a little cumbersome when you want to go beyond just a single interactive process.  Some tasks become a lot easier when they sit on the rock solid foundation of a proper Guix System and its rich set of system services.  The next section shows you how to launch a complete Guix System inside of a container."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2926
+#: guix-git/doc/guix-cookbook.texi:2949
 msgid "The Guix System provides a wide array of interconnected system services that are configured declaratively to form a dependable stateless GNU System foundation for whatever tasks you throw at it.  Even when using Guix on a foreign distribution you can benefit from the design of Guix System by running a system instance as a container.  Using the same kernel features of unshared namespaces mentioned in the previous section, the resulting Guix System instance is isolated from the host system and only shares file system locations that you explicitly declare."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2937
+#: guix-git/doc/guix-cookbook.texi:2960
 msgid "A Guix System container differs from the shell process created by @command{guix shell --container} in a number of important ways.  While in a container shell the containerized process is a Bash shell process, a Guix System container runs the Shepherd as PID 1.  In a system container all system services (@pxref{Services,,, guix, GNU Guix Reference Manual}) are set up just as they would be on a Guix System in a virtual machine or on bare metal---this includes daemons managed by the GNU@tie{}Shepherd (@pxref{Shepherd Services,,, guix, GNU Guix Reference Manual}) as well as other kinds of extensions to the operating system (@pxref{Service Composition,,, guix, GNU Guix Reference Manual})."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2944
+#: guix-git/doc/guix-cookbook.texi:2967
 msgid "The perceived increase in complexity of running a Guix System container is easily justified when dealing with more complex applications that have higher or just more rigid requirements on their execution contexts---configuration files, dedicated user accounts, directories for caches or log files, etc.  In Guix System the demands of this kind of software are satisfied through the deployment of system services."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:2946 guix-git/doc/guix-cookbook.texi:2947
+#: guix-git/doc/guix-cookbook.texi:2969 guix-git/doc/guix-cookbook.texi:2970
 #, no-wrap
 msgid "A Database Container"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2952
+#: guix-git/doc/guix-cookbook.texi:2975
 msgid "A good example might be a PostgreSQL database server.  Much of the complexity of setting up such a database server is encapsulated in this deceptively short service declaration:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2957
+#: guix-git/doc/guix-cookbook.texi:2980
 #, no-wrap
 msgid ""
 "(service postgresql-service-type\n"
@@ -4752,12 +4768,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:2961
+#: guix-git/doc/guix-cookbook.texi:2984
 msgid "A complete operating system declaration for use with a Guix System container would look something like this:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:2966
+#: guix-git/doc/guix-cookbook.texi:2989
 #, no-wrap
 msgid ""
 "(use-modules (gnu))\n"
@@ -4767,7 +4783,7 @@ msgid ""
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:3000
+#: guix-git/doc/guix-cookbook.texi:3023
 #, no-wrap
 msgid ""
 "(operating-system\n"
@@ -4806,17 +4822,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3008
+#: guix-git/doc/guix-cookbook.texi:3031
 msgid "With @code{postgresql-role-service-type} we define a role ``test'' and create a matching database, so that we can test right away without any further manual setup.  The @code{postgresql-config-file} settings allow a client from IP address 10.0.0.1 to connect without requiring authentication---a bad idea in production systems, but convenient for this example."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3014
+#: guix-git/doc/guix-cookbook.texi:3037
 msgid "Let's build a script that will launch an instance of this Guix System as a container.  Write the @code{operating-system} declaration above to a file @file{os.scm} and then use @command{guix system container} to build the launcher.  (@pxref{Invoking guix system,,, guix, GNU Guix Reference Manual})."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3022
+#: guix-git/doc/guix-cookbook.texi:3045
 #, no-wrap
 msgid ""
 "$ guix system container os.scm\n"
@@ -4828,12 +4844,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3028
+#: guix-git/doc/guix-cookbook.texi:3051
 msgid "Now that we have a launcher script we can run it to spawn the new system with a running PostgreSQL service.  Note that due to some as yet unresolved limitations we need to run the launcher as the root user, for example with @command{sudo}."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3033
+#: guix-git/doc/guix-cookbook.texi:3056
 #, no-wrap
 msgid ""
 "$ sudo /gnu/store/@dots{}-run-container\n"
@@ -4842,12 +4858,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3040
+#: guix-git/doc/guix-cookbook.texi:3063
 msgid "Background the process with @key{Ctrl-z} followed by @command{bg}.  Note the process ID in the output; we will need it to connect to the container later.  You know what? Let's try attaching to the container right now.  We will use @command{nsenter}, a tool provided by the @code{util-linux} package:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3053
+#: guix-git/doc/guix-cookbook.texi:3076
 #, no-wrap
 msgid ""
 "$ guix shell util-linux\n"
@@ -4864,34 +4880,34 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3056
+#: guix-git/doc/guix-cookbook.texi:3079
 msgid "The PostgreSQL service is running in the container!"
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:3058 guix-git/doc/guix-cookbook.texi:3059
+#: guix-git/doc/guix-cookbook.texi:3081 guix-git/doc/guix-cookbook.texi:3082
 #, no-wrap
 msgid "Container Networking"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:3060
+#: guix-git/doc/guix-cookbook.texi:3083
 #, no-wrap
 msgid "container networking"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3066
+#: guix-git/doc/guix-cookbook.texi:3089
 msgid "What good is a Guix System running a PostgreSQL database service as a container when we can only talk to it with processes originating in the container? It would be much better if we could talk to the database over the network."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3072
+#: guix-git/doc/guix-cookbook.texi:3095
 msgid "The easiest way to do this is to create a pair of connected virtual Ethernet devices (known as @code{veth}).  We move one of the devices (@code{ceth-test}) into the @code{net} namespace of the container and leave the other end (@code{veth-test}) of the connection on the host system."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3078
+#: guix-git/doc/guix-cookbook.texi:3101
 #, no-wrap
 msgid ""
 "pid=5983\n"
@@ -4902,7 +4918,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3081
+#: guix-git/doc/guix-cookbook.texi:3104
 #, no-wrap
 msgid ""
 "# Attach the new net namespace \"guix-test\" to the container PID.\n"
@@ -4911,7 +4927,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3084
+#: guix-git/doc/guix-cookbook.texi:3107
 #, no-wrap
 msgid ""
 "# Create the pair of devices\n"
@@ -4920,7 +4936,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3087
+#: guix-git/doc/guix-cookbook.texi:3110
 #, no-wrap
 msgid ""
 "# Move the client device into the container's net namespace\n"
@@ -4928,12 +4944,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3090
+#: guix-git/doc/guix-cookbook.texi:3113
 msgid "Then we configure the host side:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3094
+#: guix-git/doc/guix-cookbook.texi:3117
 #, no-wrap
 msgid ""
 "sudo ip link set $host up\n"
@@ -4941,12 +4957,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3097
+#: guix-git/doc/guix-cookbook.texi:3120
 msgid "@dots{}and then we configure the client side:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3102
+#: guix-git/doc/guix-cookbook.texi:3125
 #, no-wrap
 msgid ""
 "sudo ip netns exec $ns  ip link set lo up\n"
@@ -4955,12 +4971,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3108
+#: guix-git/doc/guix-cookbook.texi:3131
 msgid "At this point the host can reach the container at IP address 10.0.0.2, and the container can reach the host at IP 10.0.0.1.  This is all we need to talk to the database server inside the container from the host system on the outside."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3113
+#: guix-git/doc/guix-cookbook.texi:3136
 #, no-wrap
 msgid ""
 "$ psql -h 10.0.0.2 -U test\n"
@@ -4970,7 +4986,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3123
+#: guix-git/doc/guix-cookbook.texi:3146
 #, no-wrap
 msgid ""
 "test=> CREATE TABLE hello (who TEXT NOT NULL);\n"
@@ -4985,12 +5001,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3126
+#: guix-git/doc/guix-cookbook.texi:3149
 msgid "Now that we're done with this little demonstration let's clean up:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3131
+#: guix-git/doc/guix-cookbook.texi:3154
 #, no-wrap
 msgid ""
 "sudo kill $pid\n"
@@ -4999,118 +5015,118 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3143
+#: guix-git/doc/guix-cookbook.texi:3166
 msgid "Guix is a functional package manager that offers many features beyond what more traditional package managers can do.  To the uninitiated, those features might not have obvious use cases at first.  The purpose of this chapter is to demonstrate some advanced package management concepts."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3146
+#: guix-git/doc/guix-cookbook.texi:3169
 msgid "@pxref{Package Management,,, guix, GNU Guix Reference Manual} for a complete reference."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3157
+#: guix-git/doc/guix-cookbook.texi:3180
 msgid "Guix provides a very useful feature that may be quite foreign to newcomers: @emph{profiles}.  They are a way to group package installations together and all users on the same system are free to use as many profiles as they want."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3162
+#: guix-git/doc/guix-cookbook.texi:3185
 msgid "Whether you're a developer or not, you may find that multiple profiles bring you great power and flexibility.  While they shift the paradigm somewhat compared to @emph{traditional package managers}, they are very convenient to use once you've understood how to set them up."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3168
+#: guix-git/doc/guix-cookbook.texi:3191
 msgid "If you are familiar with Python's @samp{virtualenv}, you can think of a profile as a kind of universal @samp{virtualenv} that can hold any kind of software whatsoever, not just Python software.  Furthermore, profiles are self-sufficient: they capture all the runtime dependencies which guarantees that all programs within a profile will always work at any point in time."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3170
+#: guix-git/doc/guix-cookbook.texi:3193
 msgid "Multiple profiles have many benefits:"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3174
+#: guix-git/doc/guix-cookbook.texi:3197
 msgid "Clean semantic separation of the various packages a user needs for different contexts."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3178
+#: guix-git/doc/guix-cookbook.texi:3201
 msgid "Multiple profiles can be made available into the environment either on login or within a dedicated shell."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3182
+#: guix-git/doc/guix-cookbook.texi:3205
 msgid "Profiles can be loaded on demand.  For instance, the user can use multiple shells, each of them running different profiles."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3187
+#: guix-git/doc/guix-cookbook.texi:3210
 msgid "Isolation: Programs from one profile will not use programs from the other, and the user can even install different versions of the same programs to the two profiles without conflict."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3191
+#: guix-git/doc/guix-cookbook.texi:3214
 msgid "Deduplication: Profiles share dependencies that happens to be the exact same.  This makes multiple profiles storage-efficient."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3199
+#: guix-git/doc/guix-cookbook.texi:3222
 msgid "Reproducible: when used with declarative manifests, a profile can be fully specified by the Guix commit that was active when it was set up.  This means that the exact same profile can be @uref{https://guix.gnu.org/blog/2018/multi-dimensional-transactions-and-rollbacks-oh-my/, set up anywhere and anytime}, with just the commit information.  See the section on @ref{Reproducible profiles}."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3203
+#: guix-git/doc/guix-cookbook.texi:3226
 msgid "Easier upgrades and maintenance: Multiple profiles make it easy to keep package listings at hand and make upgrades completely frictionless."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3206
+#: guix-git/doc/guix-cookbook.texi:3229
 msgid "Concretely, here follows some typical profiles:"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3210
+#: guix-git/doc/guix-cookbook.texi:3233
 msgid "The dependencies of a project you are working on."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3213
+#: guix-git/doc/guix-cookbook.texi:3236
 msgid "Your favourite programming language libraries."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3216
+#: guix-git/doc/guix-cookbook.texi:3239
 msgid "Laptop-specific programs (like @samp{powertop}) that you don't need on a desktop."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3220
+#: guix-git/doc/guix-cookbook.texi:3243
 msgid "@TeX{}live (this one can be really useful when you need to install just one package for this one document you've just received over email)."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3223
+#: guix-git/doc/guix-cookbook.texi:3246
 msgid "Games."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3226
+#: guix-git/doc/guix-cookbook.texi:3249
 msgid "Let's dive in the set up!"
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:3227 guix-git/doc/guix-cookbook.texi:3228
+#: guix-git/doc/guix-cookbook.texi:3250 guix-git/doc/guix-cookbook.texi:3251
 #, no-wrap
 msgid "Basic setup with manifests"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3233
+#: guix-git/doc/guix-cookbook.texi:3256
 msgid "A Guix profile can be set up @i{via} a @dfn{manifest}.  A manifest is a snippet of Scheme code that specifies the set of packages you want to have in your profile; it looks like this:"
 msgstr ""
 
 #. type: lisp
-#: guix-git/doc/guix-cookbook.texi:3243
+#: guix-git/doc/guix-cookbook.texi:3266
 #, no-wrap
 msgid ""
 "(specifications->manifest\n"
@@ -5124,17 +5140,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3247
+#: guix-git/doc/guix-cookbook.texi:3270
 msgid "@xref{Writing Manifests,,, guix, GNU Guix Reference Manual}, for more information about the syntax."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3249
+#: guix-git/doc/guix-cookbook.texi:3272
 msgid "We can create a manifest specification per profile and install them this way:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3254
+#: guix-git/doc/guix-cookbook.texi:3277
 #, no-wrap
 msgid ""
 "GUIX_EXTRA_PROFILES=$HOME/.guix-extra-profiles\n"
@@ -5143,38 +5159,38 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3258
+#: guix-git/doc/guix-cookbook.texi:3281
 msgid "Here we set an arbitrary variable @samp{GUIX_EXTRA_PROFILES} to point to the directory where we will store our profiles in the rest of this article."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3264
+#: guix-git/doc/guix-cookbook.texi:3287
 msgid "Placing all your profiles in a single directory, with each profile getting its own sub-directory, is somewhat cleaner.  This way, each sub-directory will contain all the symlinks for precisely one profile.  Besides, ``looping over profiles'' becomes obvious from any programming language (e.g.@: a shell script) by simply looping over the sub-directories of @samp{$GUIX_EXTRA_PROFILES}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3266
+#: guix-git/doc/guix-cookbook.texi:3289
 msgid "Note that it's also possible to loop over the output of"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3269
+#: guix-git/doc/guix-cookbook.texi:3292
 #, no-wrap
 msgid "guix package --list-profiles\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3272
+#: guix-git/doc/guix-cookbook.texi:3295
 msgid "although you'll probably have to filter out @file{~/.config/guix/current}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3274
+#: guix-git/doc/guix-cookbook.texi:3297
 msgid "To enable all profiles on login, add this to your @file{~/.bash_profile} (or similar):"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3284
+#: guix-git/doc/guix-cookbook.texi:3307
 #, no-wrap
 msgid ""
 "for i in $GUIX_EXTRA_PROFILES/*; do\n"
@@ -5188,17 +5204,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3289
+#: guix-git/doc/guix-cookbook.texi:3312
 msgid "Note to Guix System users: the above reflects how your default profile @file{~/.guix-profile} is activated from @file{/etc/profile}, that latter being loaded by @file{~/.bashrc} by default."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3291
+#: guix-git/doc/guix-cookbook.texi:3314
 msgid "You can obviously choose to only enable a subset of them:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3301
+#: guix-git/doc/guix-cookbook.texi:3324
 #, no-wrap
 msgid ""
 "for i in \"$GUIX_EXTRA_PROFILES\"/my-project-1 \"$GUIX_EXTRA_PROFILES\"/my-project-2; do\n"
@@ -5212,50 +5228,50 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3305
+#: guix-git/doc/guix-cookbook.texi:3328
 msgid "When a profile is off, it's straightforward to enable it for an individual shell without \"polluting\" the rest of the user session:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3308
+#: guix-git/doc/guix-cookbook.texi:3331
 #, no-wrap
 msgid "GUIX_PROFILE=\"path/to/my-project\" ; . \"$GUIX_PROFILE\"/etc/profile\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3315
+#: guix-git/doc/guix-cookbook.texi:3338
 msgid "The key to enabling a profile is to @emph{source} its @samp{etc/profile} file.  This file contains shell code that exports the right environment variables necessary to activate the software contained in the profile.  It is built automatically by Guix and meant to be sourced.  It contains the same variables you would get if you ran:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3318
+#: guix-git/doc/guix-cookbook.texi:3341
 #, no-wrap
 msgid "guix package --search-paths=prefix --profile=$my_profile\"\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3322
+#: guix-git/doc/guix-cookbook.texi:3345
 msgid "Once again, see (@pxref{Invoking guix package,,, guix, GNU Guix Reference Manual})  for the command line options."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3324
+#: guix-git/doc/guix-cookbook.texi:3347
 msgid "To upgrade a profile, simply install the manifest again:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3327
+#: guix-git/doc/guix-cookbook.texi:3350
 #, no-wrap
 msgid "guix package -m /path/to/guix-my-project-manifest.scm -p \"$GUIX_EXTRA_PROFILES\"/my-project/my-project\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3333
+#: guix-git/doc/guix-cookbook.texi:3356
 msgid "To upgrade all profiles, it's easy enough to loop over them.  For instance, assuming your manifest specifications are stored in @file{~/.guix-manifests/guix-$profile-manifest.scm}, with @samp{$profile} being the name of the profile (e.g.@: \"project1\"), you could do the following in Bourne shell:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3338
+#: guix-git/doc/guix-cookbook.texi:3361
 #, no-wrap
 msgid ""
 "for profile in \"$GUIX_EXTRA_PROFILES\"/*; do\n"
@@ -5264,34 +5280,34 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3341
+#: guix-git/doc/guix-cookbook.texi:3364
 msgid "Each profile has its own generations:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3344
+#: guix-git/doc/guix-cookbook.texi:3367
 #, no-wrap
 msgid "guix package -p \"$GUIX_EXTRA_PROFILES\"/my-project/my-project --list-generations\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3347
+#: guix-git/doc/guix-cookbook.texi:3370
 msgid "You can roll-back to any generation of a given profile:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3350
+#: guix-git/doc/guix-cookbook.texi:3373
 #, no-wrap
 msgid "guix package -p \"$GUIX_EXTRA_PROFILES\"/my-project/my-project --switch-generations=17\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3354
+#: guix-git/doc/guix-cookbook.texi:3377
 msgid "Finally, if you want to switch to a profile without inheriting from the current environment, you can activate it from an empty shell:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3358
+#: guix-git/doc/guix-cookbook.texi:3381
 #, no-wrap
 msgid ""
 "env -i $(which bash) --login --noprofile --norc\n"
@@ -5299,70 +5315,70 @@ msgid ""
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:3360 guix-git/doc/guix-cookbook.texi:3361
+#: guix-git/doc/guix-cookbook.texi:3383 guix-git/doc/guix-cookbook.texi:3384
 #, no-wrap
 msgid "Required packages"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3366
+#: guix-git/doc/guix-cookbook.texi:3389
 msgid "Activating a profile essentially boils down to exporting a bunch of environmental variables.  This is the role of the @samp{etc/profile} within the profile."
 msgstr ""
 
 #. type: emph{#1}
-#: guix-git/doc/guix-cookbook.texi:3369
+#: guix-git/doc/guix-cookbook.texi:3392
 msgid "Note: Only the environmental variables of the packages that consume them will be set."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3373
+#: guix-git/doc/guix-cookbook.texi:3396
 msgid "For instance, @samp{MANPATH} won't be set if there is no consumer application for man pages within the profile.  So if you need to transparently access man pages once the profile is loaded, you've got two options:"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3377
+#: guix-git/doc/guix-cookbook.texi:3400
 msgid "Either export the variable manually, e.g."
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3379
+#: guix-git/doc/guix-cookbook.texi:3402
 #, no-wrap
 msgid "export MANPATH=/path/to/profile$@{MANPATH:+:@}$MANPATH\n"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3383
+#: guix-git/doc/guix-cookbook.texi:3406
 msgid "Or include @samp{man-db} to the profile manifest."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3387
+#: guix-git/doc/guix-cookbook.texi:3410
 msgid "The same is true for @samp{INFOPATH} (you can install @samp{info-reader}), @samp{PKG_CONFIG_PATH} (install @samp{pkg-config}), etc."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:3388 guix-git/doc/guix-cookbook.texi:3389
+#: guix-git/doc/guix-cookbook.texi:3411 guix-git/doc/guix-cookbook.texi:3412
 #, no-wrap
 msgid "Default profile"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3392
+#: guix-git/doc/guix-cookbook.texi:3415
 msgid "What about the default profile that Guix keeps in @file{~/.guix-profile}?"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3395
+#: guix-git/doc/guix-cookbook.texi:3418
 msgid "You can assign it the role you want.  Typically you would install the manifest of the packages you want to use all the time."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3399
+#: guix-git/doc/guix-cookbook.texi:3422
 msgid "Alternatively, you could keep it ``manifest-less'' for throw-away packages that you would just use for a couple of days.  This way makes it convenient to run"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3403
+#: guix-git/doc/guix-cookbook.texi:3426
 #, no-wrap
 msgid ""
 "guix install package-foo\n"
@@ -5370,139 +5386,139 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3406
+#: guix-git/doc/guix-cookbook.texi:3429
 msgid "without having to specify the path to a profile."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:3407 guix-git/doc/guix-cookbook.texi:3408
+#: guix-git/doc/guix-cookbook.texi:3430 guix-git/doc/guix-cookbook.texi:3431
 #, no-wrap
 msgid "The benefits of manifests"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3412
+#: guix-git/doc/guix-cookbook.texi:3435
 msgid "Manifests are a convenient way to keep your package lists around and, say, to synchronize them across multiple machines using a version control system."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3416
+#: guix-git/doc/guix-cookbook.texi:3439
 msgid "A common complaint about manifests is that they can be slow to install when they contain large number of packages.  This is especially cumbersome when you just want get an upgrade for one package within a big manifest."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3421
+#: guix-git/doc/guix-cookbook.texi:3444
 msgid "This is one more reason to use multiple profiles, which happen to be just perfect to break down manifests into multiple sets of semantically connected packages.  Using multiple, small profiles provides more flexibility and usability."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3423
+#: guix-git/doc/guix-cookbook.texi:3446
 msgid "Manifests come with multiple benefits.  In particular, they ease maintenance:"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3431
+#: guix-git/doc/guix-cookbook.texi:3454
 msgid "When a profile is set up from a manifest, the manifest itself is self-sufficient to keep a ``package listing'' around and reinstall the profile later or on a different system.  For ad-hoc profiles, we would need to generate a manifest specification manually and maintain the package versions for the packages that don't use the default version."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3436
+#: guix-git/doc/guix-cookbook.texi:3459
 msgid "@code{guix package --upgrade} always tries to update the packages that have propagated inputs, even if there is nothing to do.  Guix manifests remove this problem."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3442
+#: guix-git/doc/guix-cookbook.texi:3465
 msgid "When partially upgrading a profile, conflicts may arise (due to diverging dependencies between the updated and the non-updated packages) and they can be annoying to resolve manually.  Manifests remove this problem altogether since all packages are always upgraded at once."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3448
+#: guix-git/doc/guix-cookbook.texi:3471
 msgid "As mentioned above, manifests allow for reproducible profiles, while the imperative @code{guix install}, @code{guix upgrade}, etc. do not, since they produce different profiles every time even when they hold the same packages.  See @uref{https://issues.guix.gnu.org/issue/33285, the related discussion on the matter}."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3456
+#: guix-git/doc/guix-cookbook.texi:3479
 msgid "Manifest specifications are usable by other @samp{guix} commands.  For example, you can run @code{guix weather -m manifest.scm} to see how many substitutes are available, which can help you decide whether you want to try upgrading today or wait a while.  Another example: you can run @code{guix pack -m manifest.scm} to create a pack containing all the packages in the manifest (and their transitive references)."
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3460
+#: guix-git/doc/guix-cookbook.texi:3483
 msgid "Finally, manifests have a Scheme representation, the @samp{<manifest>} record type.  They can be manipulated in Scheme and passed to the various Guix @uref{https://en.wikipedia.org/wiki/Api, APIs}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3468
+#: guix-git/doc/guix-cookbook.texi:3491
 msgid "It's important to understand that while manifests can be used to declare profiles, they are not strictly equivalent: profiles have the side effect that they ``pin'' packages in the store, which prevents them from being garbage-collected (@pxref{Invoking guix gc,,, guix, GNU Guix Reference Manual})  and ensures that they will still be available at any point in the future."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3470
+#: guix-git/doc/guix-cookbook.texi:3493
 msgid "Let's take an example:"
 msgstr ""
 
 #. type: enumerate
-#: guix-git/doc/guix-cookbook.texi:3476
+#: guix-git/doc/guix-cookbook.texi:3499
 msgid "We have an environment for hacking on a project for which there isn't a Guix package yet.  We build the environment using a manifest, and then run @code{guix environment -m manifest.scm}.  So far so good."
 msgstr ""
 
 #. type: enumerate
-#: guix-git/doc/guix-cookbook.texi:3482
+#: guix-git/doc/guix-cookbook.texi:3505
 msgid "Many weeks pass and we have run a couple of @code{guix pull} in the mean time.  Maybe a dependency from our manifest has been updated; or we may have run @code{guix gc} and some packages needed by our manifest have been garbage-collected."
 msgstr ""
 
 #. type: enumerate
-#: guix-git/doc/guix-cookbook.texi:3487
+#: guix-git/doc/guix-cookbook.texi:3510
 msgid "Eventually, we set to work on that project again, so we run @code{guix shell -m manifest.scm}.  But now we have to wait for Guix to build and install stuff!"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3493
+#: guix-git/doc/guix-cookbook.texi:3516
 msgid "Ideally, we could spare the rebuild time.  And indeed we can, all we need is to install the manifest to a profile and use @code{GUIX_PROFILE=/the/profile; . \"$GUIX_PROFILE\"/etc/profile} as explained above: this guarantees that our hacking environment will be available at all times."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3496
+#: guix-git/doc/guix-cookbook.texi:3519
 msgid "@emph{Security warning:} While keeping old profiles around can be convenient, keep in mind that outdated packages may not have received the latest security fixes."
 msgstr ""
 
 #. type: subsection
-#: guix-git/doc/guix-cookbook.texi:3497 guix-git/doc/guix-cookbook.texi:3498
+#: guix-git/doc/guix-cookbook.texi:3520 guix-git/doc/guix-cookbook.texi:3521
 #, no-wrap
 msgid "Reproducible profiles"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3501
+#: guix-git/doc/guix-cookbook.texi:3524
 msgid "To reproduce a profile bit-for-bit, we need two pieces of information:"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3505
+#: guix-git/doc/guix-cookbook.texi:3528
 msgid "a manifest,"
 msgstr ""
 
 #. type: itemize
-#: guix-git/doc/guix-cookbook.texi:3507
+#: guix-git/doc/guix-cookbook.texi:3530
 msgid "a Guix channel specification."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3511
+#: guix-git/doc/guix-cookbook.texi:3534
 msgid "Indeed, manifests alone might not be enough: different Guix versions (or different channels) can produce different outputs for a given manifest."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3515
+#: guix-git/doc/guix-cookbook.texi:3538
 msgid "You can output the Guix channel specification with @samp{guix describe --format=channels}.  Save this to a file, say @samp{channel-specs.scm}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3518
+#: guix-git/doc/guix-cookbook.texi:3541
 msgid "On another computer, you can use the channel specification file and the manifest to reproduce the exact same profile:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3522
+#: guix-git/doc/guix-cookbook.texi:3545
 #, no-wrap
 msgid ""
 "GUIX_EXTRA_PROFILES=$HOME/.guix-extra-profiles\n"
@@ -5511,7 +5527,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3525
+#: guix-git/doc/guix-cookbook.texi:3548
 #, no-wrap
 msgid ""
 "mkdir -p \"$GUIX_EXTRA\"/my-project\n"
@@ -5520,7 +5536,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3528
+#: guix-git/doc/guix-cookbook.texi:3551
 #, no-wrap
 msgid ""
 "mkdir -p \"$GUIX_EXTRA_PROFILES/my-project\"\n"
@@ -5528,32 +5544,32 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3532
+#: guix-git/doc/guix-cookbook.texi:3555
 msgid "It's safe to delete the Guix channel profile you've just installed with the channel specification, the project profile does not depend on it."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3539
+#: guix-git/doc/guix-cookbook.texi:3562
 msgid "Guix provides multiple tools to manage environment.  This chapter demonstrate such utilities."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3550
+#: guix-git/doc/guix-cookbook.texi:3573
 msgid "Guix provides a @samp{direnv} package, which could extend shell after directory change.  This tool could be used to prepare a pure Guix environment."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3556
+#: guix-git/doc/guix-cookbook.texi:3579
 msgid "The following example provides a shell function for @file{~/.direnvrc} file, which could be used from Guix Git repository in @file{~/src/guix/.envrc} file to setup a build environment similar to described in @pxref{Building from Git,,, guix, GNU Guix Reference Manual}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3558
+#: guix-git/doc/guix-cookbook.texi:3581
 msgid "Create a @file{~/.direnvrc} with a Bash code:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3576
+#: guix-git/doc/guix-cookbook.texi:3599
 #, no-wrap
 msgid ""
 "# Thanks <https://github.com/direnv/direnv/issues/73#issuecomment-152284914>\n"
@@ -5576,7 +5592,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3581
+#: guix-git/doc/guix-cookbook.texi:3604
 #, no-wrap
 msgid ""
 "use_guix()\n"
@@ -5587,7 +5603,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3584
+#: guix-git/doc/guix-cookbook.texi:3607
 #, no-wrap
 msgid ""
 "    # Unset 'GUIX_PACKAGE_PATH'.\n"
@@ -5596,7 +5612,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3593
+#: guix-git/doc/guix-cookbook.texi:3616
 #, no-wrap
 msgid ""
 "    # Recreate a garbage collector root.\n"
@@ -5611,7 +5627,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3608
+#: guix-git/doc/guix-cookbook.texi:3631
 #, no-wrap
 msgid ""
 "    # Miscellaneous packages.\n"
@@ -5632,7 +5648,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3611
+#: guix-git/doc/guix-cookbook.texi:3634
 #, no-wrap
 msgid ""
 "    # Environment packages.\n"
@@ -5641,7 +5657,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3614
+#: guix-git/doc/guix-cookbook.texi:3637
 #, no-wrap
 msgid ""
 "    # Thanks <https://lists.gnu.org/archive/html/guix-devel/2016-09/msg00859.html>\n"
@@ -5650,7 +5666,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3621
+#: guix-git/doc/guix-cookbook.texi:3644
 #, no-wrap
 msgid ""
 "    # Predefine configure flags.\n"
@@ -5663,7 +5679,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3632
+#: guix-git/doc/guix-cookbook.texi:3655
 #, no-wrap
 msgid ""
 "    # Run make and optionally build something.\n"
@@ -5680,7 +5696,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3639
+#: guix-git/doc/guix-cookbook.texi:3662
 #, no-wrap
 msgid ""
 "    # Predefine push Git command.\n"
@@ -5693,7 +5709,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3642
+#: guix-git/doc/guix-cookbook.texi:3665
 #, no-wrap
 msgid ""
 "    clear                        # Clean up the screen.\n"
@@ -5702,7 +5718,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3650
+#: guix-git/doc/guix-cookbook.texi:3673
 #, no-wrap
 msgid ""
 "    # Show commands help.\n"
@@ -5715,82 +5731,82 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3654
+#: guix-git/doc/guix-cookbook.texi:3677
 msgid "Every project containing @file{.envrc} with a string @code{use guix} will have predefined environment variables and procedures."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3656
+#: guix-git/doc/guix-cookbook.texi:3679
 msgid "Run @command{direnv allow} to setup the environment for the first time."
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:3662
+#: guix-git/doc/guix-cookbook.texi:3685
 #, fuzzy, no-wrap
 #| msgid "System administration"
 msgid "cluster installation"
 msgstr "시스템 관리"
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:3663
+#: guix-git/doc/guix-cookbook.texi:3686
 #, no-wrap
 msgid "high-performance computing, HPC"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:3664
+#: guix-git/doc/guix-cookbook.texi:3687
 #, no-wrap
 msgid "HPC, high-performance computing"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3670
+#: guix-git/doc/guix-cookbook.texi:3693
 msgid "Guix is appealing to scientists and @acronym{HPC, high-performance computing} practitioners: it makes it easy to deploy potentially complex software stacks, and it lets you do so in a reproducible fashion---you can redeploy the exact same software on different machines and at different points in time."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3676
+#: guix-git/doc/guix-cookbook.texi:3699
 msgid "In this chapter we look at how a cluster sysadmin can install Guix for system-wide use, such that it can be used on all the cluster nodes, and discuss the various tradeoffs@footnote{This chapter is adapted from a @uref{https://hpc.guix.info/blog/2017/11/installing-guix-on-a-cluster/, blog post published on the Guix-HPC web site in 2017}.}."
 msgstr ""
 
 #. type: quotation
-#: guix-git/doc/guix-cookbook.texi:3680
+#: guix-git/doc/guix-cookbook.texi:3703
 msgid "Here we assume that the cluster is running a GNU/Linux distro other than Guix System and that we are going to install Guix on top of it."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3696
+#: guix-git/doc/guix-cookbook.texi:3719
 msgid "The recommended approach is to set up one @emph{head node} running @command{guix-daemon} and exporting @file{/gnu/store} over NFS to compute nodes."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3706
+#: guix-git/doc/guix-cookbook.texi:3729
 msgid "Remember that @command{guix-daemon} is responsible for spawning build processes and downloads on behalf of clients (@pxref{Invoking guix-daemon,,, guix, GNU Guix Reference Manual}), and more generally accessing @file{/gnu/store}, which contains all the package binaries built by all the users (@pxref{The Store,,, guix, GNU Guix Reference Manual}).  ``Client'' here refers to all the Guix commands that users see, such as @code{guix install}.  On a cluster, these commands may be running on the compute nodes and we'll want them to talk to the head node's @code{guix-daemon} instance."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3711
+#: guix-git/doc/guix-cookbook.texi:3734
 msgid "To begin with, the head node can be installed following the usual binary installation instructions (@pxref{Binary Installation,,, guix, GNU Guix Reference Manual}).  Thanks to the installation script, this should be quick.  Once installation is complete, we need to make some adjustments."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3719
+#: guix-git/doc/guix-cookbook.texi:3742
 msgid "Since we want @code{guix-daemon} to be reachable not just from the head node but also from the compute nodes, we need to arrange so that it listens for connections over TCP/IP.  To do that, we'll edit the systemd startup file for @command{guix-daemon}, @file{/etc/systemd/system/guix-daemon.service}, and add a @code{--listen} argument to the @code{ExecStart} line so that it looks something like this:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3722
+#: guix-git/doc/guix-cookbook.texi:3745
 #, no-wrap
 msgid "ExecStart=/var/guix/profiles/per-user/root/current-guix/bin/guix-daemon --build-users-group=guixbuild --listen=/var/guix/daemon-socket/socket --listen=0.0.0.0\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3725
+#: guix-git/doc/guix-cookbook.texi:3748
 msgid "For these changes to take effect, the service needs to be restarted:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3729
+#: guix-git/doc/guix-cookbook.texi:3752
 #, no-wrap
 msgid ""
 "systemctl daemon-reload\n"
@@ -5798,17 +5814,17 @@ msgid ""
 msgstr ""
 
 #. type: quotation
-#: guix-git/doc/guix-cookbook.texi:3738
+#: guix-git/doc/guix-cookbook.texi:3761
 msgid "The @code{--listen=0.0.0.0} bit means that @code{guix-daemon} will process @emph{all} incoming TCP connections on port 44146 (@pxref{Invoking guix-daemon,,, guix, GNU Guix Reference Manual}). This is usually fine in a cluster setup where the head node is reachable exclusively from the cluster's local area network---you don't want that to be exposed to the Internet!"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3743
+#: guix-git/doc/guix-cookbook.texi:3766
 msgid "The next step is to define our NFS exports in @uref{https://linux.die.net/man/5/exports,@file{/etc/exports}} by adding something along these lines:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3748
+#: guix-git/doc/guix-cookbook.texi:3771
 #, no-wrap
 msgid ""
 "/gnu/store    *(ro)\n"
@@ -5817,33 +5833,33 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3755
+#: guix-git/doc/guix-cookbook.texi:3778
 msgid "The @file{/gnu/store} directory can be exported read-only since only @command{guix-daemon} on the master node will ever modify it.  @file{/var/guix} contains @emph{user profiles} as managed by @code{guix package}; thus, to allow users to install packages with @code{guix package}, this must be read-write."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3765
+#: guix-git/doc/guix-cookbook.texi:3788
 msgid "Users can create as many profiles as they like in addition to the default profile, @file{~/.guix-profile}.  For instance, @code{guix package -p ~/dev/python-dev -i python} installs Python in a profile reachable from the @code{~/dev/python-dev} symlink.  To make sure that this profile is protected from garbage collection---i.e., that Python will not be removed from @file{/gnu/store} while this profile exists---, @emph{home directories should be mounted on the head node} as well so that @code{guix-daemon} knows about these non-standard profiles and avoids collecting software they refer to."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3770
+#: guix-git/doc/guix-cookbook.texi:3793
 msgid "It may be a good idea to periodically remove unused bits from @file{/gnu/store} by running @command{guix gc} (@pxref{Invoking guix gc,,, guix, GNU Guix Reference Manual}).  This can be done by adding a crontab entry on the head node:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3773
+#: guix-git/doc/guix-cookbook.texi:3796
 #, no-wrap
 msgid "root@@master# crontab -e\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3777
+#: guix-git/doc/guix-cookbook.texi:3800
 msgid "... with something like this:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3782
+#: guix-git/doc/guix-cookbook.texi:3805
 #, no-wrap
 msgid ""
 "# Every day at 5AM, run the garbage collector to make sure\n"
@@ -5852,17 +5868,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3785
+#: guix-git/doc/guix-cookbook.texi:3808
 msgid "We're done with the head node! Let's look at compute nodes now."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3792
+#: guix-git/doc/guix-cookbook.texi:3815
 msgid "First of all, we need compute nodes to mount those NFS directories that the head node exports.  This can be done by adding the following lines to @uref{https://linux.die.net/man/5/fstab,@file{/etc/fstab}}:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3797
+#: guix-git/doc/guix-cookbook.texi:3820
 #, no-wrap
 msgid ""
 "@var{head-node}:/gnu/store    /gnu/store    nfs  defaults,_netdev,vers=3 0 0\n"
@@ -5871,17 +5887,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3803
+#: guix-git/doc/guix-cookbook.texi:3826
 msgid "... where @var{head-node} is the name or IP address of your head node.  From there on, assuming the mount points exist, you should be able to mount each of these on the compute nodes."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3809
+#: guix-git/doc/guix-cookbook.texi:3832
 msgid "Next, we need to provide a default @command{guix} command that users can run when they first connect to the cluster (eventually they will invoke @command{guix pull}, which will provide them with their ``own'' @command{guix} command).  Similar to what the binary installation script did on the head node, we'll store that in @file{/usr/local/bin}:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3814
+#: guix-git/doc/guix-cookbook.texi:3837
 #, no-wrap
 msgid ""
 "mkdir -p /usr/local/bin\n"
@@ -5890,12 +5906,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3818
+#: guix-git/doc/guix-cookbook.texi:3841
 msgid "We then need to tell @code{guix} to talk to the daemon running on our master node, by adding these lines to @code{/etc/profile}:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3822
+#: guix-git/doc/guix-cookbook.texi:3845
 #, no-wrap
 msgid ""
 "GUIX_DAEMON_SOCKET=\"guix://@var{head-node}\"\n"
@@ -5903,12 +5919,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3827
+#: guix-git/doc/guix-cookbook.texi:3850
 msgid "To avoid warnings and make sure @code{guix} uses the right locale, we need to tell it to use locale data provided by Guix (@pxref{Application Setup,,, guix, GNU Guix Reference Manual}):"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3831
+#: guix-git/doc/guix-cookbook.texi:3854
 #, no-wrap
 msgid ""
 "GUIX_LOCPATH=/var/guix/profiles/per-user/root/guix-profile/lib/locale\n"
@@ -5917,7 +5933,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3836
+#: guix-git/doc/guix-cookbook.texi:3859
 #, no-wrap
 msgid ""
 "# Here we must use a valid locale name.  Try \"ls $GUIX_LOCPATH/*\"\n"
@@ -5927,12 +5943,12 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3843
+#: guix-git/doc/guix-cookbook.texi:3866
 msgid "For convenience, @code{guix package} automatically generates @file{~/.guix-profile/etc/profile}, which defines all the environment variables necessary to use the packages---@code{PATH}, @code{C_INCLUDE_PATH}, @code{PYTHONPATH}, etc.  Thus it's a good idea to source it from @code{/etc/profile}:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3849
+#: guix-git/doc/guix-cookbook.texi:3872
 #, no-wrap
 msgid ""
 "GUIX_PROFILE=\"$HOME/.guix-profile\"\n"
@@ -5942,65 +5958,65 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3853
+#: guix-git/doc/guix-cookbook.texi:3876
 msgid "Last but not least, Guix provides command-line completion notably for Bash and zsh.  In @code{/etc/bashrc}, consider adding this line:"
 msgstr ""
 
 #. type: verbatim
-#: guix-git/doc/guix-cookbook.texi:3856
+#: guix-git/doc/guix-cookbook.texi:3879
 #, no-wrap
 msgid ". /var/guix/profiles/per-user/root/current-guix/etc/bash_completion.d/guix\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3859
+#: guix-git/doc/guix-cookbook.texi:3882
 msgid "Voilà!"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3862
+#: guix-git/doc/guix-cookbook.texi:3885
 msgid "You can check that everything's in place by logging in on a compute node and running:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3865
+#: guix-git/doc/guix-cookbook.texi:3888
 #, no-wrap
 msgid "guix install hello\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3871
+#: guix-git/doc/guix-cookbook.texi:3894
 msgid "The daemon on the head node should download pre-built binaries on your behalf and unpack them in @file{/gnu/store}, and @command{guix install} should create @file{~/.guix-profile} containing the @file{~/.guix-profile/bin/hello} command."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:3873
+#: guix-git/doc/guix-cookbook.texi:3896
 #, no-wrap
 msgid "Network Access"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3878
+#: guix-git/doc/guix-cookbook.texi:3901
 msgid "Guix requires network access to download source code and pre-built binaries.  The good news is that only the head node needs that since compute nodes simply delegate to it."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3884
+#: guix-git/doc/guix-cookbook.texi:3907
 msgid "It is customary for cluster nodes to have access at best to a @emph{white list} of hosts.  Our head node needs at least @code{ci.guix.gnu.org} in this white list since this is where it gets pre-built binaries from by default, for all the packages that are in Guix proper."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3889
+#: guix-git/doc/guix-cookbook.texi:3912
 msgid "Incidentally, @code{ci.guix.gnu.org} also serves as a @emph{content-addressed mirror} of the source code of those packages.  Consequently, it is sufficient to have @emph{only} @code{ci.guix.gnu.org} in that white list."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3898
+#: guix-git/doc/guix-cookbook.texi:3921
 msgid "Software packages maintained in a separate repository such as one of the various @uref{https://hpc.guix.info/channels, HPC channels} are of course unavailable from @code{ci.guix.gnu.org}.  For these packages, you may want to extend the white list such that source and pre-built binaries (assuming this-party servers provide binaries for these packages) can be downloaded.  As a last resort, users can always download source on their workstation and add it to the cluster's @file{/gnu/store}, like this:"
 msgstr ""
 
 #. type: verbatim
-#: guix-git/doc/guix-cookbook.texi:3902
+#: guix-git/doc/guix-cookbook.texi:3925
 #, no-wrap
 msgid ""
 "GUIX_DAEMON_SOCKET=ssh://compute-node.example.org \\\n"
@@ -6008,17 +6024,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3906
+#: guix-git/doc/guix-cookbook.texi:3929
 msgid "The above command downloads @code{starpu-1.2.3.tar.gz} @emph{and} sends it to the cluster's @code{guix-daemon} instance over SSH."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3913
+#: guix-git/doc/guix-cookbook.texi:3936
 msgid "Air-gapped clusters require more work.  At the moment, our suggestion would be to download all the necessary source code on a workstation running Guix.  For instance, using the @option{--sources} option of @command{guix build} (@pxref{Invoking guix build,,, guix, GNU Guix Reference Manual}), the example below downloads all the source code the @code{openmpi} package depends on:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3916
+#: guix-git/doc/guix-cookbook.texi:3939
 #, no-wrap
 msgid ""
 "$ guix build --sources=transitive openmpi\n"
@@ -6026,7 +6042,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3918
+#: guix-git/doc/guix-cookbook.texi:3941
 #, no-wrap
 msgid ""
 "@dots{}\n"
@@ -6034,7 +6050,7 @@ msgid ""
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3930
+#: guix-git/doc/guix-cookbook.texi:3953
 #, no-wrap
 msgid ""
 "/gnu/store/xc17sm60fb8nxadc4qy0c7rqph499z8s-openmpi-1.10.7.tar.bz2\n"
@@ -6051,17 +6067,17 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3934
+#: guix-git/doc/guix-cookbook.texi:3957
 msgid "(In case you're wondering, that's more than 320@ MiB of @emph{compressed} source code.)"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3937
+#: guix-git/doc/guix-cookbook.texi:3960
 msgid "We can then make a big archive containing all of this (@pxref{Invoking guix archive,,, guix, GNU Guix Reference Manual}):"
 msgstr ""
 
 #. type: verbatim
-#: guix-git/doc/guix-cookbook.texi:3942
+#: guix-git/doc/guix-cookbook.texi:3965
 #, no-wrap
 msgid ""
 "$ guix archive --export \\\n"
@@ -6070,71 +6086,71 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3946
+#: guix-git/doc/guix-cookbook.texi:3969
 msgid "@dots{} and we can eventually transfer that archive to the cluster on removable storage and unpack it there:"
 msgstr ""
 
 #. type: verbatim
-#: guix-git/doc/guix-cookbook.texi:3949
+#: guix-git/doc/guix-cookbook.texi:3972
 #, no-wrap
 msgid "$ guix archive --import < openmpi-source-code.nar\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3953
+#: guix-git/doc/guix-cookbook.texi:3976
 msgid "This process has to be repeated every time new source code needs to be brought to the cluster."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3957
+#: guix-git/doc/guix-cookbook.texi:3980
 msgid "As we write this, the research institutes involved in Guix-HPC do not have air-gapped clusters though. If you have experience with such setups, we would like to hear feedback and suggestions."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:3959
+#: guix-git/doc/guix-cookbook.texi:3982
 #, no-wrap
 msgid "Disk Usage"
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:3961
+#: guix-git/doc/guix-cookbook.texi:3984
 #, no-wrap
 msgid "disk usage, on a cluster"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3968
+#: guix-git/doc/guix-cookbook.texi:3991
 msgid "A common concern of sysadmins' is whether this is all going to eat a lot of disk space.  If anything, if something is going to exhaust disk space, it's going to be scientific data sets rather than compiled software---that's our experience with almost ten years of Guix usage on HPC clusters.  Nevertheless, it's worth taking a look at how Guix contributes to disk usage."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3973
+#: guix-git/doc/guix-cookbook.texi:3996
 msgid "First, having several versions or variants of a given package in @file{/gnu/store} does not necessarily cost much, because @command{guix-daemon} implements deduplication of identical files, and package variants are likely to have a number of common files."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3980
+#: guix-git/doc/guix-cookbook.texi:4003
 msgid "As mentioned above, we recommend having a cron job to run @code{guix gc} periodically, which removes @emph{unused} software from @file{/gnu/store}. However, there's always a possibility that users will keep lots of software in their profiles, or lots of old generations of their profiles, which is ``live'' and cannot be deleted from the viewpoint of @command{guix gc}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3984
+#: guix-git/doc/guix-cookbook.texi:4007
 msgid "The solution to this is for users to regularly remove old generations of their profile. For instance, the following command removes generations that are more than two-month old:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3987
+#: guix-git/doc/guix-cookbook.texi:4010
 #, no-wrap
 msgid "guix package --delete-generations=2m\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:3992
+#: guix-git/doc/guix-cookbook.texi:4015
 msgid "Likewise, it's a good idea to invite users to regularly upgrade their profile, which can reduce the number of variants of a given piece of software stored in @file{/gnu/store}:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:3996
+#: guix-git/doc/guix-cookbook.texi:4019
 #, no-wrap
 msgid ""
 "guix pull\n"
@@ -6142,81 +6158,97 @@ msgid ""
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:4002
+#: guix-git/doc/guix-cookbook.texi:4025
 msgid "As a last resort, it is always possible for sysadmins to do some of this on behalf of their users. Nevertheless, one of the strengths of Guix is the freedom and control users get on their software environment, so we strongly recommend leaving users in control."
 msgstr ""
 
 #. type: section
-#: guix-git/doc/guix-cookbook.texi:4004
+#: guix-git/doc/guix-cookbook.texi:4027
 #, fuzzy, no-wrap
 #| msgid "security key, configuration"
 msgid "Security Considerations"
 msgstr "보안 키, 구성"
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:4006
+#: guix-git/doc/guix-cookbook.texi:4029
 #, no-wrap
 msgid "security, on a cluster"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:4011
+#: guix-git/doc/guix-cookbook.texi:4034
 msgid "On an HPC cluster, Guix is typically used to manage scientific software.  Security-critical software such as the operating system kernel and system services such as @code{sshd} and the batch scheduler remain under control of sysadmins."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:4016
+#: guix-git/doc/guix-cookbook.texi:4039
 msgid "The Guix project has a good track record delivering security updates in a timely fashion (@pxref{Security Updates,,, guix, GNU Guix Reference Manual}).  To get security updates, users have to run @code{guix pull && guix upgrade}."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:4022
+#: guix-git/doc/guix-cookbook.texi:4045
 msgid "Because Guix uniquely identifies software variants, it is easy to see if a vulnerable piece of software is in use. For instance, to check whether the glibc@ 2.25 variant without the mitigation patch against ``@uref{https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt,Stack Clash}'', one can check whether user profiles refer to it at all:"
 msgstr ""
 
 #. type: example
-#: guix-git/doc/guix-cookbook.texi:4025
+#: guix-git/doc/guix-cookbook.texi:4048
 #, no-wrap
 msgid "guix gc --referrers /gnu/store/…-glibc-2.25\n"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:4029
+#: guix-git/doc/guix-cookbook.texi:4052
 msgid "This will report whether profiles exist that refer to this specific glibc variant."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:4042
+#: guix-git/doc/guix-cookbook.texi:4065
 msgid "Guix is based on the @uref{https://nixos.org/nix/, Nix package manager}, which was designed and implemented by Eelco Dolstra, with contributions from other people (see the @file{nix/AUTHORS} file in Guix.)  Nix pioneered functional package management, and promoted unprecedented features, such as transactional package upgrades and rollbacks, per-user profiles, and referentially transparent build processes.  Without this work, Guix would not exist."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:4045
+#: guix-git/doc/guix-cookbook.texi:4068
 msgid "The Nix-based software distributions, Nixpkgs and NixOS, have also been an inspiration for Guix."
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:4051
+#: guix-git/doc/guix-cookbook.texi:4074
 msgid "GNU@tie{}Guix itself is a collective work with contributions from a number of people.  See the @file{AUTHORS} file in Guix for more information on these fine people.  The @file{THANKS} file lists people who have helped by reporting bugs, taking care of the infrastructure, providing artwork and themes, making suggestions, and more---thank you!"
 msgstr ""
 
 #. type: Plain text
-#: guix-git/doc/guix-cookbook.texi:4056
+#: guix-git/doc/guix-cookbook.texi:4079
 msgid "This document includes adapted sections from articles that have previously been published on the Guix blog at @uref{https://guix.gnu.org/blog} and on the Guix-HPC blog at @uref{https://hpc.guix.info/blog}."
 msgstr ""
 
 #. type: cindex
-#: guix-git/doc/guix-cookbook.texi:4061
+#: guix-git/doc/guix-cookbook.texi:4084
 #, no-wrap
 msgid "license, GNU Free Documentation License"
 msgstr ""
 
 #. type: include
-#: guix-git/doc/guix-cookbook.texi:4062
+#: guix-git/doc/guix-cookbook.texi:4085
 #, no-wrap
 msgid "fdl-1.3.texi"
 msgstr ""
 
+#~ msgid "@samp{GUIX_PACKAGE_PATH}"
+#~ msgstr "@samp{GUIX_PACKAGE_PATH}"
+
+#~ msgid "GUIX_PACKAGE_PATH"
+#~ msgstr "GUIX_PACKAGE_PATH"
+
+#~ msgid ""
+#~ "$ mkdir ~/guix-packages\n"
+#~ "$ export GUIX_PACKAGE_PATH=~/guix-packages\n"
+#~ msgstr ""
+#~ "$ mkdir ~/guix-packages\n"
+#~ "$ export GUIX_PACKAGE_PATH=~/guix-packages\n"
+
+#~ msgid "$ guix package --show=my-hello\n"
+#~ msgstr "$ guix package --show=my-hello\n"
+
 #~ msgid "Learn the basics of Scheme"
 #~ msgstr "기본 계획을 배웁니다"