Ludovic Courtès (2016-05-16 15:45 +0300) wrote:

> Alex Kost <alezost@gmail.com> skribis:
>
>> To recap: we use "gnu/packages/patches/emacs-source-date-epoch.patch" to
>> modify 'autoload-insert-section-header' function, and it should work,
>> but it doesn't.  IIUC this happens because "autoload.elc" file was
>> compiled using the unpatched "autoload.el", but first things first.  Try
>> the following recipe in Emacs (installed with Guix):
[...]
> Ideally, we
> should remove all the .elc files and rebuild them, but maybe there are
> bootstrapping issues.

The attached patch does this.  Happily there were no any issues.  Now
emacs packages will honor SOURCE_DATE_EPOCH.  Even autoloads that comes
with emacs itself (loaddefs.el, cl-loaddefs.el, etc.) will have a proper
timestamp.