bug#65035: 29.1; Port flycheck-emacs-lisp-initialize-packages to flymake

[Eli Zaretskii <eliz@gnu.org>]

Ping! Ping! Ping!

> Cc: 65035@debbugs.gnu.org, joaotavora@gmail.com, me@pengjiz.com
> Date: Sat, 14 Dec 2024 11:33:58 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> 
> Ping! Ping!
> 
> > Cc: joaotavora@gmail.com, 65035@debbugs.gnu.org
> > Date: Sat, 30 Nov 2024 11:48:11 +0200
> > From: Eli Zaretskii <eliz@gnu.org>
> > 
> > Ping!  Can we make some progress with this bug report?
> > 
> > > Cc: joaotavora@gmail.com, 65035@debbugs.gnu.org
> > > From: Pengji Zhang <me@pengjiz.com>
> > > Date: Thu, 14 Nov 2024 19:18:20 +0800
> > > 
> > > Spencer Baugh <sbaugh@janestreet.com> writes:
> > > 
> > > > I think this should also switch from passing "-Q" to passing just
> > > > "-q". If we're include ~/.emacs.d/elpa on load-path, we should include
> > > > the site-lisp directories too, which -Q suppresses.
> > > 
> > > I agree. How about the following change?
> > > 
> > > --8<---------------cut here---------------start------------->8---
> > >          :name "elisp-flymake-byte-compile"
> > >          :buffer output-buffer
> > >          :command `(,(expand-file-name invocation-name invocation-directory)
> > > -                   "-Q"
> > > +                   ,@(if elisp-flymake--byte-compile-activate-packages
> > > +                         ;; Add site-lisp directories to `load-path' so
> > > +                         ;; that system-wide packages (installed into
> > > +                         ;; site-lisp/elpa) are activated.
> > > +                         '("-q" "--no-site-file")
> > > +                       '("-Q"))
> > >                     "--batch"
> > >                     ;; "--eval" "(setq load-prefer-newer t)" ; for testing
> > >                     ,@(mapcan (lambda (path) (list "-L" path))
> > > --8<---------------cut here---------------end--------------->8---
> > > 
> > > > Probably we should specifically pass "--batch --no-site-file" instead
> > > > of "-Q --batch", since --batch also implies -q.
> > > 
> > > I am not sure if it is a good idea to always include the site-lisp
> > > directories. I myself want this only when checking my init.el. When
> > > developing packages, I prefer a pristine environment.
> > > 
> > > 
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