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-rw-r--r--.gitignore1
-rw-r--r--Makefile.am4
-rw-r--r--configure.ac1
-rw-r--r--guix/config.scm.in53
-rw-r--r--guix/utils.scm10
-rw-r--r--pre-inst-env.in5
6 files changed, 61 insertions, 13 deletions
diff --git a/.gitignore b/.gitignore
index e6b254ae44..eb4238f0b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -48,3 +48,4 @@ config.cache
 /guix-download
 /distro/packages/bootstrap/i686-linux/guile-bootstrap-2.0.6.tar.xz
 /guix-package
+/guix/config.scm
diff --git a/Makefile.am b/Makefile.am
index 0621cb8c00..b06f575e6c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -46,7 +46,7 @@ MODULES =					\
   distro/packages/ld-wrapper.scm		\
   distro/packages/typesetting.scm
 
-GOBJECTS = $(MODULES:%.scm=%.go)
+GOBJECTS = $(MODULES:%.scm=%.go) guix/config.go
 
 nobase_dist_guilemodule_DATA = $(MODULES)
 
@@ -112,7 +112,7 @@ distro/packages/bootstrap/i686-linux/guile-bootstrap-2.0.6.tar.xz: guix/utils.go
 	$(MKDIR_P) `dirname "$@"`
 	$(DOWNLOAD_FILE) "$@" "93b537766dfab3ad287143523751e3ec02dd32d3ccaf88ad2d31c63158f342ee"
 
-nobase_nodist_guilemodule_DATA = $(GOBJECTS)
+nobase_nodist_guilemodule_DATA = $(GOBJECTS) guix/config.scm
 
 TESTS =						\
   tests/builders.scm				\
diff --git a/configure.ac b/configure.ac
index 85bd20e2be..6d3d1482b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -79,6 +79,7 @@ AC_SUBST([LIBGCRYPT])
 
 AC_CONFIG_FILES([Makefile
                  po/Makefile.in
+		 guix/config.scm
 		 guix-build
 		 guix-download
 		 guix-package
diff --git a/guix/config.scm.in b/guix/config.scm.in
new file mode 100644
index 0000000000..462dcd0ed1
--- /dev/null
+++ b/guix/config.scm.in
@@ -0,0 +1,53 @@
+;;; Guix --- Nix package management from Guile.         -*- coding: utf-8 -*-
+;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of Guix.
+;;;
+;;; Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (guix config)
+  #:export (%guix-package-name
+            %guix-version
+            %guix-bug-report-address
+            %libgcrypt
+            %nixpkgs
+            %nix-instantiate))
+
+;;; Commentary:
+;;;
+;;; Compile-time configuration of Guix.
+;;;
+;;; Code:
+
+(define %guix-package-name
+  "@PACKAGE_NAME@")
+
+(define %guix-version
+  "@PACKAGE_VERSION@")
+
+(define %guix-bug-report-address
+  "@PACKAGE_BUGREPORT@")
+
+(define %libgcrypt
+  "@LIBGCRYPT@")
+
+(define %nixpkgs
+  (if (string=? "@NIXPKGS@" "")
+      #f
+      "@NIXPKGS@"))
+
+(define %nix-instantiate
+  "@NIX_INSTANTIATE@")
+
+;;; config.scm ends here
diff --git a/guix/utils.scm b/guix/utils.scm
index 287a6d4f3a..10b0c15fad 100644
--- a/guix/utils.scm
+++ b/guix/utils.scm
@@ -17,6 +17,7 @@
 ;;; along with Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (guix utils)
+  #:use-module (guix config)
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-9)
   #:use-module (srfi srfi-26)
@@ -392,10 +393,6 @@ starting from the right of S."
 ;;; Hash.
 ;;;
 
-(define %libgcrypt
-  ;; Name of the libgcrypt shared library.
-  (compile-time-value (or (getenv "LIBGCRYPT") "libgcrypt")))
-
 (define sha256
   (cond
    ((compile-time-value
@@ -458,13 +455,12 @@ starting from the right of S."
 (define %nixpkgs-directory
   (make-parameter
    ;; Capture the build-time value of $NIXPKGS.
-   (or (compile-time-value (getenv "NIXPKGS"))
-       (getenv "NIXPKGS"))))
+   (or %nixpkgs (getenv "NIXPKGS"))))
 
 (define* (nixpkgs-derivation attribute #:optional (system (%current-system)))
   "Return the derivation path of ATTRIBUTE in Nixpkgs."
   (let* ((p (open-pipe* OPEN_READ (or (getenv "NIX_INSTANTIATE")
-                                      "nix-instantiate")
+                                      %nix-instantiate)
                         "-A" attribute (%nixpkgs-directory)
                         "--argstr" "system" system))
          (l (read-line p))
diff --git a/pre-inst-env.in b/pre-inst-env.in
index 2fb60e2edd..d90934c184 100644
--- a/pre-inst-env.in
+++ b/pre-inst-env.in
@@ -41,10 +41,7 @@ export PATH
 # auto-compilation.
 
 NIX_HASH="@NIX_HASH@"
-NIX_INSTANTIATE="@NIX_INSTANTIATE@"
-NIXPKGS="@NIXPKGS@"
-LIBGCRYPT="@LIBGCRYPT@"
 
-export NIX_HASH NIX_INSTANTIATE NIXPKGS LIBGCRYPT
+export NIX_HASH
 
 exec "$@"