From 59688fc4b5cfac3e05610195a47795f5cc15f338 Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Wed, 18 Sep 2013 17:01:40 +0200
Subject: derivations: 'derivation' and related procedures return a single
 value.

* guix/derivations.scm (derivation->output-path,
  derivation->output-paths): New procedures.
  (derivation-path->output-path): Use 'derivation->output-path'.
  (derivation-path->output-paths): Use 'derivation->output-paths'.
  (derivation): Accept 'derivation?' objects as inputs.  Return a single
  value.
  (build-derivations): New procedure.
  (compiled-modules): Use 'derivation->output-paths'.
  (build-expression->derivation)[source-path]: Add case for when the
  input matches 'derivation?'.
  [prologue]: Accept 'derivation?' objects in INPUTS.
  [mod-dir, go-dir]: Use 'derivation->output-path'.
* guix/download.scm (url-fetch): Adjust to the single-value return.
* guix/packages.scm (package-output): Use 'derivation->output-path'.
* guix/scripts/build.scm (guix-build): When the argument is
  'derivation-path?', pass it through 'read-derivation'.
  Use 'derivation-file-name' to print out the .drv file names, and to
  register them.  Use 'derivation->output-path' instead of
  'derivation-path->output-path'.
* guix/scripts/package.scm (roll-back): Adjust to the single-value
  return.
  (guix-package): Use 'derivation->output-path'.
* guix/ui.scm (show-what-to-build): Adjust to deal with 'derivation?'
  objects instead of .drv file names.
* gnu/system/grub.scm (grub-configuration-file): Use
  'derivation->output-path' instead of 'derivation-path->output-path'.
* gnu/system/vm.scm (qemu-image, system-qemu-image): Likewise.
* tests/builders.scm, tests/derivations.scm, tests/packages.scm,
  tests/store.scm, tests/union.scm: Adjust to the new calling
  convention.
* doc/guix.texi (Defining Packages, The Store, Derivations): Adjust
  accordingly.
---
 gnu/system/grub.scm | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'gnu/system/grub.scm')

diff --git a/gnu/system/grub.scm b/gnu/system/grub.scm
index 695a044bfa..b2438b9c5b 100644
--- a/gnu/system/grub.scm
+++ b/gnu/system/grub.scm
@@ -56,7 +56,7 @@ (define prologue
             (any (match-lambda
                   (($ <menu-entry> _ linux)
                    (let* ((drv (package-derivation store linux system))
-                          (out (derivation-path->output-path drv)))
+                          (out (derivation->output-path drv)))
                      (string-append out "/bzImage"))))
                  entries)))
 
@@ -71,9 +71,9 @@ (define entry->text
   initrd ~a/initrd
 }~%"
                 label
-                (derivation-path->output-path linux-drv)
+                (derivation->output-path linux-drv)
                 (string-join arguments)
-                (derivation-path->output-path initrd-drv))))))
+                (derivation->output-path initrd-drv))))))
 
   (add-text-to-store store "grub.cfg"
                      (string-append prologue
-- 
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