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authorLudovic Courtès <ludo@gnu.org>2015-01-14 14:25:58 +0100
committerLudovic Courtès <ludo@gnu.org>2015-01-14 14:25:58 +0100
commit023d9892c0411adb523e6bc8337be3e7e94e606f (patch)
treed19588bf31c79f6d875c3f0df7b683fc38d05860 /guix
parente87f0591f3117ed61285f33c7cc3548f72e551ad (diff)
store: Add 'store-lower'.
* guix/store.scm (store-lower): New procedure. * tests/store.scm ("store-lower"): New test.
Diffstat (limited to 'guix')
-rw-r--r--guix/store.scm7
1 files changed, 7 insertions, 0 deletions
diff --git a/guix/store.scm b/guix/store.scm
index d3e94625a7..82ed94bbc1 100644
--- a/guix/store.scm
+++ b/guix/store.scm
@@ -99,6 +99,7 @@
store-bind
store-return
store-lift
+ store-lower
run-with-store
%guile-for-build
text-file
@@ -881,6 +882,12 @@ in the store monad."
(procedure-property proc 'documentation))
result)
+(define (store-lower proc)
+ "Lower PROC, a monadic procedure in %STORE-MONAD, to a \"normal\" procedure
+taking the store as its first argument."
+ (lambda (store . args)
+ (run-with-store store (apply proc args))))
+
;;
;; Store monad operators.
;;