From ce5d658c5c24ccd394818ba892d43ea4c424ec24 Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Wed, 11 Jul 2012 17:26:43 +0200
Subject: Add `nixpkgs-derivation*'; use it in the distro.

* guix/utils.scm (nixpkgs-derivation*): New macro.

* distro/base.scm: Use it instead of `nixpkgs-derivation'.
---
 guix/utils.scm | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'guix/utils.scm')

diff --git a/guix/utils.scm b/guix/utils.scm
index 3d92bac9cc..66563c727e 100644
--- a/guix/utils.scm
+++ b/guix/utils.scm
@@ -43,6 +43,7 @@
 
             %nixpkgs-directory
             nixpkgs-derivation
+            nixpkgs-derivation*
 
             define-record-type*
             compile-time-value
@@ -457,6 +458,10 @@ starting from the right of S."
          (not (eof-object? l))
          l)))
 
+(define-syntax-rule (nixpkgs-derivation* attribute)
+  "Evaluate the given Nixpkgs derivation at compile-time."
+  (compile-time-value (nixpkgs-derivation attribute)))
+
 
 ;;;
 ;;; Miscellaneous.
-- 
cgit v1.2.3