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authorLudovic Courtès <ludo@gnu.org>2013-01-20 22:17:58 +0100
committerLudovic Courtès <ludo@gnu.org>2013-01-20 22:54:36 +0100
commite509d1527d231b6460a20762e13b57cba2e43485 (patch)
tree750b7bb4c321d42d17ca2b50679d682373d5251b /doc
parent079fca3be86e38bcbefa67e6f07b7ff440726ceb (diff)
downloadguix-e509d1527d231b6460a20762e13b57cba2e43485.tar
guix-e509d1527d231b6460a20762e13b57cba2e43485.tar.gz
packages: Have `package-derivation' return a <derivation> as a second value.
* guix/packages.scm (cache): Change the `drv' argument to `thunk'. Memoize all the return values of THUNK. (cached-derivation): Remove. (cached): New macro. (package-derivation): Use `cached' instead of `(or (cached-derivation) …)'. * doc/guix.texi (Defining Packages): Update accordingly.
Diffstat (limited to 'doc')
-rw-r--r--doc/guix.texi5
1 files changed, 2 insertions, 3 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index e475463782..88909c42a9 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -765,9 +765,8 @@ The build actions it prescribes may then be realized by using the
@code{build-derivations} procedure (@pxref{The Store}).
@deffn {Scheme Procedure} package-derivation @var{store} @var{package} [@var{system}]
-Return the derivation of @var{package} for @var{system}. The result is
-the file name of the derivation---i.e., a @code{.drv} file under
-@code{/nix/store}.
+Return the derivation path and corresponding @code{<derivation>} object
+of @var{package} for @var{system} (@pxref{Derivations}).
@var{package} must be a valid @code{<package>} object, and @var{system}
must be a string denoting the target system type---e.g.,