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| author | Ludovic Courtès <ludo@gnu.org> | 2013-01-20 22:17:58 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2013-01-20 22:54:36 +0100 |
| commit | e509d1527d231b6460a20762e13b57cba2e43485 (patch) | |
| tree | 750b7bb4c321d42d17ca2b50679d682373d5251b /doc | |
| parent | 079fca3be86e38bcbefa67e6f07b7ff440726ceb (diff) | |
| download | gnu-guix-e509d1527d231b6460a20762e13b57cba2e43485.tar gnu-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.texi | 5 |
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., |