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-rw-r--r--guix/build/python-build-system.scm7
1 files changed, 7 insertions, 0 deletions
diff --git a/guix/build/python-build-system.scm b/guix/build/python-build-system.scm
index 1ae42c00b4..6775cc4396 100644
--- a/guix/build/python-build-system.scm
+++ b/guix/build/python-build-system.scm
@@ -136,11 +136,18 @@ installed with setuptools."
#t))
#t))
+(define* (set-SOURCE-DATE-EPOCH #:rest _)
+ "Set the 'SOURCE_DATE_EPOCH' environment variable."
+ ;; Use zero as the timestamp in .pyc files so that builds are deterministic.
+ ;; TODO: Remove it when this variable is set in GNU:%STANDARD-PHASES.
+ (setenv "SOURCE_DATE_EPOCH" "0"))
+
(define %standard-phases
;; 'configure' and 'build' phases are not needed. Everything is done during
;; 'install'.
(modify-phases gnu:%standard-phases
(add-after 'unpack 'ensure-no-mtimes-pre-1980 ensure-no-mtimes-pre-1980)
+ (add-after 'unpack 'set-SOURCE-DATE-EPOCH set-SOURCE-DATE-EPOCH)
(delete 'configure)
(replace 'install install)
(replace 'check check)