GNU bug report logs - #48331
Emacs' describe-package doesn't work for packages managed by guix

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Message #41 received at 48331 <at> debbugs.gnu.org (full text, mbox):

From: Andrew Tropin <andrew <at> trop.in>
To: Leo Prikler <leo.prikler <at> student.tugraz.at>
Cc: Arun Isaac <arunisaac <at> systemreboot.net>, 48331 <at> debbugs.gnu.org,
 Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Subject: Re: Emacs' describe-package doesn't work for packages managed by guix
Date: Thu, 20 May 2021 13:01:48 +0300

> That looks like it'd mess with people's installed ELPA packages.  In
> general, hacks based on package-directory-list don't feel very stable.

If you talk about ~/.emacs.d/elpa, it won't, because there is a separate
package-user-dir variable for that.

The problem can arise if we have emacs installed in a few profiles, I'm
not sure if it is a good idea to do so, but it is possible, in such a case
we will have a few items in the package-directory-list.  A fix for that:

(setq package-directory-list
      (mapcar (apply-partially 'string-remove-suffix "/elpa")
              package-directory-list)))

> Also, this seems to rely on us not deleting the -pkg.el, but probably
> won't work for packages, that don't ship it, e.g. emacs-howm.

It's true, but it seems relatively easy to implement a build phase,
which will generate -pgk.el in case it is missing.

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