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-rw-r--r--guix/build/utils.scm7
1 files changed, 7 insertions, 0 deletions
diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index 16406930b5..b0abc69f0e 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -33,6 +33,7 @@
alist-delete)
#:export (%store-directory
store-file-name?
+ strip-store-file-name
parallel-job-count
directory-exists?
@@ -87,6 +88,12 @@
"Return true if FILE is in the store."
(string-prefix? (%store-directory) file))
+(define (strip-store-file-name file)
+ "Strip the '/gnu/store' and hash from FILE, a store file name. The result
+is typically a \"PACKAGE-VERSION\" string."
+ (string-drop file
+ (+ 34 (string-length (%store-directory)))))
+
(define parallel-job-count
;; Number of processes to be passed next to GNU Make's `-j' argument.
(make-parameter