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-rw-r--r--guix/build/utils.scm5
1 files changed, 5 insertions, 0 deletions
diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index 5d229b5f83..fbd5d54da5 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -32,6 +32,7 @@
#:re-export (alist-cons
alist-delete)
#:export (%store-directory
+ store-file-name?
parallel-job-count
directory-exists?
@@ -81,6 +82,10 @@
(or (getenv "NIX_STORE")
"/gnu/store"))
+(define (store-file-name? file)
+ "Return true if FILE is in the store."
+ (string-prefix? (%store-directory) file))
+
(define parallel-job-count
;; Number of processes to be passed next to GNU Make's `-j' argument.
(make-parameter