gnu/packages/patches/emacs-source-date-epoch.patch

   1 Honor SOURCE_DATE_EPOCH variable to avoid non-determinism in generated
   2 "autoloads" files.
   3
   4 --- a/lisp/emacs-lisp/autoload.el
   5 +++ b/lisp/emacs-lisp/autoload.el
   6 @@ -419,8 +419,12 @@
   7    ;;              nil t))
   8    ;;        (match-end 2))))
   9    (insert generate-autoload-section-header)
  10 -  (prin1 `(autoloads ,autoloads ,load-name ,file ,time)
  11 -        outbuf)
  12 +  (let* ((env  (getenv "SOURCE_DATE_EPOCH"))
  13 +         (time (if env
  14 +                   (seconds-to-time (string-to-number env))
  15 +                 time)))
  16 +    (prin1 `(autoloads ,autoloads ,load-name ,file ,time)
  17 +           outbuf))
  18    (terpri outbuf)
  19    ;; Break that line at spaces, to avoid very long lines.
  20    ;; Make each sub-line into a comment.