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-rw-r--r--doc/local.mk3
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/local.mk b/doc/local.mk
index 18bd599962..a653a32420 100644
--- a/doc/local.mk
+++ b/doc/local.mk
@@ -224,6 +224,9 @@ gen_man = \
$(HELP2MANFLAGS)
HELP2MANFLAGS = --source=GNU --info-page=$(PACKAGE_TARNAME)
+# help2man reproducibility
+SOURCE_DATE_EPOCH = $(shell git show HEAD --format=%ct --no-patch 2>/dev/null || echo 1)
+export SOURCE_DATE_EPOCH
$(srcdir)/%D%/guix.1: scripts/guix.in $(sub_commands_mans)
-$(AM_V_HELP2MAN)$(gen_man) --output="$@" `basename "$@" .1`