add SOURCE_DATE_EPOCH to Makefile to fix copyright year

NixOS · Nov 14, 2023 · dce0169 · dce0169
1 parent d135cab
commit dce0169
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/Makefile b/Makefile
@@ -6,6 +6,7 @@ SPHINXOPTS    = -W
 SPHINXBUILD   = sphinx-build
 PAPER         =
 BUILDDIR      = build
+SOURCE_DATE_EPOCH = $(shell git log -1 --format=%ct)
 
 # Internal variables.
 PAPEROPT_a4     = -D latex_paper_size=a4