Use guile-zlib extension in build-side code.

* Makefile.am (MODULES): Move guix/build/download-nar.scm to ...
(MODULES_NOT_COMPILED): ... here.
* guix/build/download-nar.scm: Use (zlib) instead of (guix zlib).
* guix/cvs-download.scm (cvs-fetch): Do not stub (guix config) in imported
modules list, instead add "guile-zlib" to the extension list.
* guix/git-download.scm (git-fetch): Ditto.
* guix/hg-download.scm (hg-fetch): Do not stub (guix config) in imported
modules list, instead add "guile-zlib" to the extension list.

1 files changed, 15 insertions, 24 deletions

diff --git a/guix/cvs-download.scm b/guix/cvs-download.scm
index cb42103aae..76b3eac739 100644
--- a/guix/cvs-download.scm
+++ b/guix/cvs-download.scm
@@ -60,35 +60,26 @@
   "Return a fixed-output derivation that fetches REF, a <cvs-reference>
 object.  The output is expected to have recursive hash HASH of type
 HASH-ALGO (a symbol).  Use NAME as the file name, or a generic name if #f."
-  (define zlib
-    (module-ref (resolve-interface '(gnu packages compression)) 'zlib))
-
-  (define config.scm
-    (scheme-file "config.scm"
-                 #~(begin
-                     (define-module (guix config)
-                       #:export (%libz))
-
-                     (define %libz
-                       #+(file-append zlib "/lib/libz")))))
+  (define guile-zlib
+    (module-ref (resolve-interface '(gnu packages guile)) 'guile-zlib))
 
   (define modules
-    (cons `((guix config) => ,config.scm)
-          (delete '(guix config)
-                  (source-module-closure '((guix build cvs)
-                                           (guix build download-nar))))))
+    (delete '(guix config)
+            (source-module-closure '((guix build cvs)
+                                     (guix build download-nar)))))
   (define build
     (with-imported-modules modules
-      #~(begin
-          (use-modules (guix build cvs)
-                       (guix build download-nar))
+      (with-extensions (list guile-zlib)
+        #~(begin
+            (use-modules (guix build cvs)
+                         (guix build download-nar))
 
-          (or (cvs-fetch '#$(cvs-reference-root-directory ref)
-                         '#$(cvs-reference-module ref)
-                         '#$(cvs-reference-revision ref)
-                         #$output
-                         #:cvs-command (string-append #+cvs "/bin/cvs"))
-              (download-nar #$output)))))
+            (or (cvs-fetch '#$(cvs-reference-root-directory ref)
+                           '#$(cvs-reference-module ref)
+                           '#$(cvs-reference-revision ref)
+                           #$output
+                           #:cvs-command (string-append #+cvs "/bin/cvs"))
+                (download-nar #$output))))))
 
   (mlet %store-monad ((guile (package->derivation guile system)))
     (gexp->derivation (or name "cvs-checkout") build