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authorLudovic Courtès <ludo@gnu.org>2017-06-11 23:05:23 +0200
committerLudovic Courtès <ludo@gnu.org>2017-06-11 23:05:23 +0200
commitc08ea55e7ec25261e4596bf6726a83c1ed056b94 (patch)
tree62c86988b26ccca3b8cdebaf07b201f4d0f904e4 /doc
parentc580ff672425ad7cd6a388178fa5857b6aa15d5f (diff)
packages: Add 'specifications->manifest'.
* gnu/packages.scm (specifications->manifest): New procedure. * doc/guix.texi (Invoking guix package): Change example from using '(compose list specification->package+output)' to using 'specifications->manifest'.
Diffstat (limited to 'doc')
-rw-r--r--doc/guix.texi9
1 files changed, 4 insertions, 5 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 87aaae8545..83f20c8598 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -1742,18 +1742,17 @@ of packages:
(list guile-2.0 "debug")))
@end example
-@findex specification->package+output
+@findex specifications->manifest
In this example we have to know which modules define the @code{emacs}
and @code{guile-2.0} variables to provide the right
@code{use-package-modules} line, which can be cumbersome. We can
instead provide regular package specifications and let
-@code{specification->package-output} look up the corresponding package
+@code{specifications->manifest} look up the corresponding package
objects, like this:
@example
-(packages->manifest
- (map (compose list specification->package+output)
- '("emacs" "guile@@2.0" "guile@@2.0:debug")))
+(specifications->manifest
+ '("emacs" "guile@@2.2" "guile@@2.2:debug"))
@end example
@item --roll-back