build-system/gnu: Allow the `source' argument to be #f.

* guix/build-system/gnu.scm (gnu-build): Allow SOURCE to be #f.
This commit is contained in:
Ludovic Courtès 2013-01-15 01:05:39 +01:00
parent f4b60f5f6b
commit 29c1793dc2

View file

@ -204,7 +204,7 @@ (define* (gnu-build store name source inputs
(define builder
`(begin
(use-modules ,@modules)
(gnu-build #:source ,(if (derivation-path? source)
(gnu-build #:source ,(if (and source (derivation-path? source))
(derivation-path->output-path source)
source)
#:system ,system
@ -239,7 +239,9 @@ (define guile-for-build
(build-expression->derivation store name system
builder
`(("source" ,source)
`(,@(if source
`(("source" ,source))
'())
,@inputs
,@(if implicit-inputs?
(parameterize ((%store store))