guix-play/gnu/packages/patches/emacs-source-date-epoch.patch
Alex Kost 6f4b23e674 gnu: emacs: Honor 'SOURCE_DATE_EPOCH'.
Suggested by Ludovic Courtès <ludo@gnu.org>.

* gnu/packages/patches/emacs-source-date-epoch.patch: New patch.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/emacs.scm (emacs)[source]: Use it.
2015-11-14 21:59:37 +03:00

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Diff

Honor SOURCE_DATE_EPOCH variable to avoid non-determinism in generated
"autoloads" files.
--- a/lisp/emacs-lisp/autoload.el
+++ b/lisp/emacs-lisp/autoload.el
@@ -378,8 +378,12 @@
"Insert the section-header line,
which lists the file name and which functions are in it, etc."
(insert generate-autoload-section-header)
- (prin1 `(autoloads ,autoloads ,load-name ,file ,time)
- outbuf)
+ (let* ((env (getenv "SOURCE_DATE_EPOCH"))
+ (time (if env
+ (seconds-to-time (string-to-number env))
+ time)))
+ (prin1 `(autoloads ,autoloads ,load-name ,file ,time)
+ outbuf))
(terpri outbuf)
;; Break that line at spaces, to avoid very long lines.
;; Make each sub-line into a comment.