GNU bug report logs - #72333
Magit/Transient error message

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From: Richard Sent <richard <at> freakingpenguin.com>
To: 72333 <at> debbugs.gnu.org, aurtzy <at> gmail.com, daniel.szmulewicz <at> gmail.com
Subject: bug#72333: Magit/Transient error message
Date: Wed, 31 Jul 2024 12:52:46 -0400

On July 30, 2024 6:50:12 PM EDT, aurtzy <aurtzy <at> gmail.com> wrote:
>Hi Daniel,
>
>> Running M-x magit-branch generates the following error:
>>
>> transient-setup: Symbol’s function definition is void:
>> transient-prefix-object
>>
>> In order to reproduce:
>>
>> guix shell emacs emacs-magit -- emacs -Q
>>
>> M-x magit-version
>> Magit 3.3.0-8.538cb2f, Transient 0.7.3, Git 2.45.2, Emacs 29.4, gnu/linux
>
>It looks like this is because emacs is actually using the built-in (older)
>version of transient, while magit relies on a function from a newer version.
>
>Evaluating the following definition from the newer transient source code fixes
>this particular issue for me (I've put it in my init.el for the time being):
>
>#+begin_src lisp
>  (defun transient-prefix-object ()
>    (or transient--prefix transient-current-prefix))
>#+end_src
>
>This sounds similar to another issue with embark and org [1], however in that
>report it was because emacs-org was not included in the environment; in this
>case, the newer version of transient is already an input of magit in the guix
>package, so I'm not sure what's happening here.
>
>[1] https://github.com/oantolin/embark/issues/723
>
>Cheers,
>
>aurtzy
>
>
>
>

I encountered a similar issue to this (void-function transient--suffix-only) when I enabled the following block of code:

#+begin_src lisp
  ;; FIXME: This caused (void-function transient--suffix-only) errors
  ;; in Guix c9cd16c630ccba655b93ff32fd9a99570b4f5373 with magit.
  ;;
  ;; (setq read-extended-command-predicate
  ;;       #'command-completion-default-include-p)
#+end_src

I'm also not sure of the underlying cause, but something seems funky with Magit.

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