From: Tom Gillespie <tgbugs@gmail.com>
To: 43476@debbugs.gnu.org, akrl@sdf.org
Subject: bug#43476: feature/native-comp; path for .eln files when running with --no-init-file
Date: Thu, 17 Sep 2020 14:03:39 -0400 [thread overview]
Message-ID: <CA+G3_PNAvJ3rNxBk-efewVxoXf43DZB6juX8TVoRFdLGKjKBwQ@mail.gmail.com> (raw)
Hi Andrea,
Not quite a bug, but an inconsistency in the behavior of
comp-eln-load-path compared to the behavior of load-path. Best!
Tom
While investigating the json-mode kill-buffer bug I encountered an
issue which seems like it might cause confusion at some point.
comp-eln-load-path is set at startup and materialized.
When Emacs is launched with -q, load-path does not contain the
materialized locations of paths inside user-emacs-directory until
after a call to package-initialize.
I think that there is a similar need for comp-eln-load-path, which is
that it needs to exclude the user eln cache path when emacs is
launched with -q so that it is possible to debug issues arising from
stale/bad eln files. There will be a similar issue with site-lisp and
-Q.
I don't know whether stale files could cause a problem given how you
hash to generate the names for the eln files, but I'm imagining cases
where someone upgraded gcc or libgccjit and something changed. I think
that not setting the user path when Emacs is run with -q is consistent
with Emacs behavior for load-path.
Right now a user has to explicitly pop the old eln cache directory and
then update the new directory if they reset user-emacs-directory as I
do in the longer reproduction for the json-mode bug (reproduced
below).
#+begin_src bash
emacs -q \
--eval "(setq user-emacs-directory \"/tmp/test/.emacs.d/\")" \
--eval "(when (boundp 'comp-eln-load-path) (pop comp-eln-load-path)
(add-to-list 'comp-eln-load-path (concat user-emacs-directory \"eln-cache\")))"
#+end_src
I don't have a good solution for this, but wanted to raise the issue
since I anticipate that there will be quite a bit of confusion if the
user eln cache continues to point to the path ~/.emacs.d/eln-cache
instead of either not being set or updating to be inside
user-emacs-directory the first time the value is needed.
next reply other threads:[~2020-09-17 18:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-17 18:03 Tom Gillespie [this message]
2020-10-10 9:48 ` bug#43476: feature/native-comp; path for .eln files when running with --no-init-file Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-10-10 19:12 ` Tom Gillespie
2020-10-10 19:22 ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CA+G3_PNAvJ3rNxBk-efewVxoXf43DZB6juX8TVoRFdLGKjKBwQ@mail.gmail.com \
--to=tgbugs@gmail.com \
--cc=43476@debbugs.gnu.org \
--cc=akrl@sdf.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).