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-rw-r--r--guix/build/utils.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index 01ac8961d8..be91fb467b 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -638,7 +638,7 @@ When KEEP-MTIME? is true, the atime/mtime of FILE are kept unchanged."
(let ((st (stat file)))
(substitute* file
- (("^ *SHELL[[:blank:]]*=[[:blank:]]*([[:graph:]]*/)([[:graph:]]+)(.*)$"
+ (("^ *SHELL[[:blank:]]*:?=[[:blank:]]*([[:graph:]]*/)([[:graph:]]+)(.*)$"
_ dir shell args)
(let* ((old (string-append dir shell))
(new (or (find-shell shell) old)))