GNU bug report logs - #63260
29.0.90; Regression installing/activating packages without autoloads

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Message #25 received at 63260 <at> debbugs.gnu.org (full text, mbox):

From: Basil Contovounesios <contovob <at> tcd.ie>
To: Robert Pluim <rpluim <at> gmail.com>
Cc: 63260 <at> debbugs.gnu.org, Philip Kaludercic <philipk <at> posteo.net>
Subject: Re: bug#63260: 29.0.90; Regression installing/activating packages
 without autoloads
Date: Sat, 06 May 2023 15:10:23 +0200

Robert Pluim [2023-05-05 08:36 +0200] wrote:

>>>>>> On Thu, 04 May 2023 18:28:47 +0200, Basil Contovounesios <contovob <at> tcd.ie> said:
>
>     Basil> This does not address the file-missing error during package activation,
>     Basil> but it allows a subsequent package-quickstart-refresh to complete
>     Basil> (albeit with a warning in a *Compile-Log*):
>
> The file-missing error is expected, no? Thatʼs why the autoloads
> loading is wrapped in `with-demoted-errors'. Although if the message bothers
> you, I guess we could check `file-exists-p' for it.

I think it's problematic to emit even a demoted error for supported
circumstances, such as a 'library' package that defines no autoload
cookies.

Besides, shouldn't the autoloads file be generated unconditionally?
https://lists.gnu.org/r/emacs-devel/2022-06/msg00570.html

While the error logged to *Messages* is relatively silent, its subequent
repetition on Emacs startup is not:

$ emacs-29
Error loading autoloads: (file-missing Cannot open load file
No such file or directory
/tmp/tmp.QQvQfBZ384/.emacs.d/elpa/sicp-20200512.1137/sicp-autoloads)

This does not seem like TRT to me.

>     Basil>   Compiling file /tmp/tmp.6cdF8paE0K/.emacs.d/package-quickstart.el
>     Basil>                  at Thu May  4 18:24:07 2023
>     Basil>   Entering directory ‘/tmp/tmp.6cdF8paE0K/.emacs.d/’
>     Basil>   package-quickstart.el:4:2: Warning: Empty let body
>
>     Basil> due to the following generated contents of package-quickstart-file:
>
>     Basil>   (let ((load-true-file-name nil)(load-file-name nil))
>     Basil>   )
>
> Iʼd claim ENOCOFFEE for the last patch, but it was not the morning :-)

If only POSIX made it clear to expect ENOCOFFEE when it's least
expected ;).

> diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
> index 0919ce34448..4b488281b78 100644
> --- a/lisp/emacs-lisp/package.el
> +++ b/lisp/emacs-lisp/package.el
> @@ -4491,11 +4491,11 @@ package-quickstart-refresh
>        (insert ";;; Quickstart file to activate all packages at startup  -*- lexical-binding:t -*-\n")
>        (insert ";; ¡¡ This file is autogenerated by `package-quickstart-refresh', DO NOT EDIT !!\n\n")
>        (dolist (pkg package--quickstart-pkgs)
> -        (let* ((file
> -                ;; Prefer uncompiled files (and don't accept .so files).
> -                (let ((load-suffixes '(".el" ".elc")))
> -                  (locate-library (package--autoloads-file-name pkg))))
> -               (pfile (prin1-to-string file)))
> +        (when-let* ((file
> +                     ;; Prefer uncompiled files (and don't accept .so files).
> +                     (let ((load-suffixes '(".el" ".elc")))
> +                       (locate-library (package--autoloads-file-name pkg))))
> +                    (pfile (prin1-to-string file)))
>            (insert "(let ((load-true-file-name " pfile ")\
>  \(load-file-name " pfile "))\n")
>            (insert-file-contents file)

This indeed avoids the problem in package-quickstart, thanks.

The issue with the missing autoload file during package
installation/activation remains, however.

Sorry for not being more helpful, but I'm travelling until next week.

Thanks,

-- 
Basil

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