GNU bug report logs - #59882
30.0.50; Compilation of ELPA packages during version upgrade (Org 9.6 ELPA upgrade from older ELPA version)

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Message #137 received at 59882 <at> debbugs.gnu.org (full text, mbox):

From: Tom Gillespie <tgbugs <at> gmail.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: emacs-orgmode <at> gnu.org, 59882 <at> debbugs.gnu.org
Subject: Re: bug#59882: Multiple versions of Org in load-path problem
Date: Tue, 18 Apr 2023 21:20:54 -0700

> The state of our unloading support is not good enough to use it blindly

I have managed to use unload-feature to reload a new version of org
after the builtin version has been previously loaded, but the dance you
have to do to avoid nasty errors (and segfaults if using native comp!)
is about 100 lines of arcane footwork, and if any one step is off you
will encounter one of the many hidden landmines.

unload-feature cannot be used blindly, and there are a very large
number of side effects along the path that are not controlled which
makes any process that tries to use unload-feature brittle and hard
to debug.

https://github.com/tgbugs/orgstrap/blob/f35bccde556b0f82515e79ee69f4379469276356/ow.el#L1010-L1064
https://github.com/tgbugs/orgstrap/blob/f35bccde556b0f82515e79ee69f4379469276356/ow.el#L1073-L1177

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