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bug#48015: 28.0.50; ELPA package compilation fails
From: |
Stefan Monnier |
Subject: |
bug#48015: 28.0.50; ELPA package compilation fails |
Date: |
Mon, 26 Apr 2021 18:16:18 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
> Same here. Hitting C-g at the password prompt is not sufficient to
> trigger the error for package installation.
>
> Maybe you could use something else? "emacs -Q /ssh::" did the failing
> test.
Indeed, I can reproduce the problem now. Basically you need
default-directory to be under Tramp's control.
The core problem that I see is the following:
- Emacs's tramp gets loaded
- We go to a Tramp-controlled default-directory
- We call `package--load-files-for-activation`
- This starts by loading ~/.emacs.d/elpa/tramp-NN.MM/tramp-autoloads.el
This calls `tramp-register-autoload-file-name-handlers`.
- At this point, `package--load-files-for-activation` would like to
continue by (re)loading the new Tramp files, such as `tramp-compat`
and friends in the same order that they have been loaded
(i.e. `tramp-compat.el` before `tramp.el`).
- But before it gets a chance to do that, the file-name handlers
call `tramp-autoload-file-name-handler` because of `default-directory`,
which does (load "tramp" 'noerror 'nomessage), which loads the new
`tramp.el` before we got a change to load the new `tramp-compat.el`,
which then leads to an error when the new code in `tramp.el` calls
a new function from `tramp-compat.el` (which happens to be
`tramp-compat-thread-yield` AFAICT).
At this point, I'm not sure how best to fix the problem.
Maybe replacing (load "tramp" 'noerror 'nomessage) with
(require 'tramp nil t) is all it takes.
Or maybe a better option is to arrange the autoloads such that
`tramp-register-autoload-file-name-handlers` doesn't "unload/unregister" file
handlers that have already been loaded so that the directory that was
already under Tramp's control doesn't re-trigger a call to
`tramp-autoload-file-name-handler`?
Stefan
- bug#48015: 28.0.50; ELPA package compilation fails, Michael Albinus, 2021/04/25
- bug#48015: 28.0.50; ELPA package compilation fails, Stefan Monnier, 2021/04/25
- bug#48015: 28.0.50; ELPA package compilation fails, Michael Albinus, 2021/04/25
- bug#48015: 28.0.50; ELPA package compilation fails,
Stefan Monnier <=
- bug#48015: 28.0.50; ELPA package compilation fails, Michael Albinus, 2021/04/27
- bug#48015: 28.0.50; ELPA package compilation fails, Stefan Monnier, 2021/04/27
- bug#48015: 28.0.50; ELPA package compilation fails, Stefan Monnier, 2021/04/27
- bug#48015: 28.0.50; ELPA package compilation fails, Michael Albinus, 2021/04/27
- bug#48015: 28.0.50; ELPA package compilation fails, Michael Albinus, 2021/04/28
- bug#48015: 28.0.50; ELPA package compilation fails, Stefan Monnier, 2021/04/28
- bug#48015: 28.0.50; ELPA package compilation fails, Michael Albinus, 2021/04/28