diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/contributing.texi | 2 | ||||
| -rw-r--r-- | doc/guix.texi | 56 |
2 files changed, 30 insertions, 28 deletions
diff --git a/doc/contributing.texi b/doc/contributing.texi index 7417f28d14..c55eb63382 100644 --- a/doc/contributing.texi +++ b/doc/contributing.texi @@ -443,7 +443,7 @@ as timestamps or randomly-generated output in the build result. Another option is to use @command{guix challenge} (@pxref{Invoking guix challenge}). You may run it once the package has been committed and -built by @code{hydra.gnu.org} to check whether it obtains the same +built by @code{@value{SUBSTITUTE-SERVER}} to check whether it obtains the same result as you did. Better yet: Find another machine that can build it and run @command{guix publish}. Since the remote build machine is likely different from yours, this can catch non-determinism issues diff --git a/doc/guix.texi b/doc/guix.texi index 7158a1d091..3d9b006adc 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -13,6 +13,9 @@ @set OPENPGP-SIGNING-KEY-ID 3CE464558A84FDC69DB40CFB090B11993D9AEBB5 @set KEY-SERVER pool.sks-keyservers.net +@c The official substitute server used by default. +@set SUBSTITUTE-SERVER ci.guix.info + @copying Copyright @copyright{} 2012, 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès@* Copyright @copyright{} 2013, 2014, 2016 Andreas Enge@* @@ -1274,8 +1277,7 @@ remote procedure call (@pxref{The Store}). @anchor{daemon-substitute-urls} Consider @var{urls} the default whitespace-separated list of substitute source URLs. When this option is omitted, -@indicateurl{https://mirror.hydra.gnu.org https://hydra.gnu.org} is used -(@code{mirror.hydra.gnu.org} is a mirror of @code{hydra.gnu.org}). +@indicateurl{https://@value{SUBSTITUTE-SERVER}} is used. This means that substitutes may be downloaded from @var{urls}, as long as they are signed by a trusted signature (@pxref{Substitutes}). @@ -2321,7 +2323,7 @@ also result from derivation builds, can be available as substitutes. @cindex hydra @cindex build farm -The @code{mirror.hydra.gnu.org} server is a front-end to an official build farm +The @code{@value{SUBSTITUTE-SERVER}} server is a front-end to an official build farm that builds packages from Guix continuously for some architectures, and makes them available as substitutes. This is the default source of substitutes; it can be overridden by passing the @@ -2353,22 +2355,22 @@ other substitute server. @cindex substitutes, authorization thereof @cindex access control list (ACL), for substitutes @cindex ACL (access control list), for substitutes -To allow Guix to download substitutes from @code{hydra.gnu.org} or a +To allow Guix to download substitutes from @code{@value{SUBSTITUTE-SERVER}} or a mirror thereof, you must add its public key to the access control list (ACL) of archive imports, using the @command{guix archive} command (@pxref{Invoking guix -archive}). Doing so implies that you trust @code{hydra.gnu.org} to not +archive}). Doing so implies that you trust @code{@value{SUBSTITUTE-SERVER}} to not be compromised and to serve genuine substitutes. -The public key for @code{hydra.gnu.org} is installed along with Guix, in -@code{@var{prefix}/share/guix/hydra.gnu.org.pub}, where @var{prefix} is +The public key for @code{@value{SUBSTITUTE-SERVER}} is installed along with Guix, in +@code{@var{prefix}/share/guix/@value{SUBSTITUTE-SERVER}.pub}, where @var{prefix} is the installation prefix of Guix. If you installed Guix from source, make sure you checked the GPG signature of @file{guix-@value{VERSION}.tar.gz}, which contains this public key file. Then, you can run something like this: @example -# guix archive --authorize < @var{prefix}/share/guix/hydra.gnu.org.pub +# guix archive --authorize < @var{prefix}/share/guix/@value{SUBSTITUTE-SERVER}.pub @end example @quotation Note @@ -2409,7 +2411,7 @@ $ guix build emacs --dry-run @end example @noindent -This indicates that substitutes from @code{hydra.gnu.org} are usable and +This indicates that substitutes from @code{@value{SUBSTITUTE-SERVER}} are usable and will be downloaded, when possible, for future builds. @cindex substitutes, how to disable @@ -2501,9 +2503,9 @@ by a server. Today, each individual's control over their own computing is at the mercy of institutions, corporations, and groups with enough power and determination to subvert the computing infrastructure and exploit its -weaknesses. While using @code{hydra.gnu.org} substitutes can be +weaknesses. While using @code{@value{SUBSTITUTE-SERVER}} substitutes can be convenient, we encourage users to also build on their own, or even run -their own build farm, such that @code{hydra.gnu.org} is less of an +their own build farm, such that @code{@value{SUBSTITUTE-SERVER}} is less of an interesting target. One way to help is by publishing the software you build using @command{guix publish} so that others have one more choice of server to download substitutes from (@pxref{Invoking guix publish}). @@ -3658,11 +3660,11 @@ Read a single-item archive as served by substitute servers low-level operation needed in only very narrow use cases; see below. For example, the following command extracts the substitute for Emacs -served by @code{hydra.gnu.org} to @file{/tmp/emacs}: +served by @code{@value{SUBSTITUTE-SERVER}} to @file{/tmp/emacs}: @example $ wget -O - \ - https://hydra.gnu.org/nar/@dots{}-emacs-24.5 \ + https://@value{SUBSTITUTE-SERVER}/nar/@dots{}-emacs-24.5 \ | bunzip2 | guix archive -x /tmp/emacs @end example @@ -6683,7 +6685,7 @@ but you are actually on an @code{x86_64} machine: @example $ guix build --log-file gdb -s mips64el-linux -https://hydra.gnu.org/log/@dots{}-gdb-7.10 +https://@value{SUBSTITUTE-SERVER}/log/@dots{}-gdb-7.10 @end example You can freely access a huge library of build logs! @@ -8335,7 +8337,7 @@ When @command{guix publish} runs, it spawns an HTTP server which allows anyone with network access to obtain substitutes from it. This means that any machine running Guix can also act as if it were a build farm, since the HTTP interface is compatible with Hydra, the software behind -the @code{hydra.gnu.org} build farm. +the @code{@value{SUBSTITUTE-SERVER}} build farm. For security, each substitute is signed, allowing recipients to check their authenticity and integrity (@pxref{Substitutes}). Because @@ -8572,20 +8574,20 @@ any given store item. The command output looks like this: @smallexample -$ guix challenge --substitute-urls="https://hydra.gnu.org https://guix.example.org" -updating list of substitutes from 'https://hydra.gnu.org'... 100.0% +$ guix challenge --substitute-urls="https://@value{SUBSTITUTE-SERVER} https://guix.example.org" +updating list of substitutes from 'https://@value{SUBSTITUTE-SERVER}'... 100.0% updating list of substitutes from 'https://guix.example.org'... 100.0% /gnu/store/@dots{}-openssl-1.0.2d contents differ: local hash: 0725l22r5jnzazaacncwsvp9kgf42266ayyp814v7djxs7nk963q - https://hydra.gnu.org/nar/@dots{}-openssl-1.0.2d: 0725l22r5jnzazaacncwsvp9kgf42266ayyp814v7djxs7nk963q + https://@value{SUBSTITUTE-SERVER}/nar/@dots{}-openssl-1.0.2d: 0725l22r5jnzazaacncwsvp9kgf42266ayyp814v7djxs7nk963q https://guix.example.org/nar/@dots{}-openssl-1.0.2d: 1zy4fmaaqcnjrzzajkdn3f5gmjk754b43qkq47llbyak9z0qjyim /gnu/store/@dots{}-git-2.5.0 contents differ: local hash: 00p3bmryhjxrhpn2gxs2fy0a15lnip05l97205pgbk5ra395hyha - https://hydra.gnu.org/nar/@dots{}-git-2.5.0: 069nb85bv4d4a6slrwjdy8v1cn4cwspm3kdbmyb81d6zckj3nq9f + https://@value{SUBSTITUTE-SERVER}/nar/@dots{}-git-2.5.0: 069nb85bv4d4a6slrwjdy8v1cn4cwspm3kdbmyb81d6zckj3nq9f https://guix.example.org/nar/@dots{}-git-2.5.0: 0mdqa9w1p6cmli6976v4wi0sw9r4p5prkj7lzfd1877wk11c9c73 /gnu/store/@dots{}-pius-2.1.1 contents differ: local hash: 0k4v3m9z1zp8xzzizb7d8kjj72f9172xv078sq4wl73vnq9ig3ax - https://hydra.gnu.org/nar/@dots{}-pius-2.1.1: 0k4v3m9z1zp8xzzizb7d8kjj72f9172xv078sq4wl73vnq9ig3ax + https://@value{SUBSTITUTE-SERVER}/nar/@dots{}-pius-2.1.1: 0k4v3m9z1zp8xzzizb7d8kjj72f9172xv078sq4wl73vnq9ig3ax https://guix.example.org/nar/@dots{}-pius-2.1.1: 1cy25x1a4fzq5rk0pmvc8xhwyffnqz95h2bpvqsz2mpvlbccy0gs @dots{} @@ -8605,7 +8607,7 @@ the servers obtained a result different from the local build. @cindex non-determinism, in package builds As an example, @code{guix.example.org} always gets a different answer. -Conversely, @code{hydra.gnu.org} agrees with local builds, except in the +Conversely, @code{@value{SUBSTITUTE-SERVER}} agrees with local builds, except in the case of Git. This might indicate that the build process of Git is non-deterministic, meaning that its output varies as a function of various things that Guix does not fully control, in spite of building @@ -8619,14 +8621,14 @@ To find out what is wrong with this Git binary, we can do something along these lines (@pxref{Invoking guix archive}): @example -$ wget -q -O - https://hydra.gnu.org/nar/@dots{}-git-2.5.0 \ +$ wget -q -O - https://@value{SUBSTITUTE-SERVER}/nar/@dots{}-git-2.5.0 \ | guix archive -x /tmp/git $ diff -ur --no-dereference /gnu/store/@dots{}-git.2.5.0 /tmp/git @end example This command shows the difference between the files resulting from the local build, and the files resulting from the build on -@code{hydra.gnu.org} (@pxref{Overview, Comparing and Merging Files,, +@code{@value{SUBSTITUTE-SERVER}} (@pxref{Overview, Comparing and Merging Files,, diffutils, Comparing and Merging Files}). The @command{diff} command works great for text files. When binary files differ, a better option is @uref{https://diffoscope.org/, Diffoscope}, a tool that helps @@ -8641,7 +8643,7 @@ In the meantime, @command{guix challenge} is one tool to help address the problem. If you are writing packages for Guix, you are encouraged to check -whether @code{hydra.gnu.org} and other substitute servers obtain the +whether @code{@value{SUBSTITUTE-SERVER}} and other substitute servers obtain the same build result as you did with: @example @@ -11231,14 +11233,14 @@ Number of build user accounts to create. @item @code{authorize-key?} (default: @code{#t}) @cindex substitutes, authorization thereof Whether to authorize the substitute keys listed in -@code{authorized-keys}---by default that of @code{hydra.gnu.org} +@code{authorized-keys}---by default that of @code{@value{SUBSTITUTE-SERVER}} (@pxref{Substitutes}). @vindex %default-authorized-guix-keys @item @code{authorized-keys} (default: @var{%default-authorized-guix-keys}) The list of authorized key files for archive imports, as a list of string-valued gexps (@pxref{Invoking guix archive}). By default, it -contains that of @code{hydra.gnu.org} (@pxref{Substitutes}). +contains that of @code{@value{SUBSTITUTE-SERVER}} (@pxref{Substitutes}). @item @code{use-substitutes?} (default: @code{#t}) Whether to use substitutes. @@ -23740,7 +23742,7 @@ system}. @cindex substituter Users can obtain the new package definition simply by running @command{guix pull} (@pxref{Invoking guix pull}). When -@code{hydra.gnu.org} is done building the package, installing the +@code{@value{SUBSTITUTE-SERVER}} is done building the package, installing the package automatically downloads binaries from there (@pxref{Substitutes}). The only place where human intervention is needed is to review and apply the patch. |