GNU bug report logs - #78521
Error: No package in XXX with `package-install-file`

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From: Eli Zaretskii <eliz <at> gnu.org>
To: philipk <at> posteo.net, Jen-Chieh Shen <jcs090218 <at> gmail.com>
Cc: 78521 <at> debbugs.gnu.org
Subject: bug#78521: Error: No package in XXX with `package-install-file`
Date: Sat, 07 Jun 2025 11:38:36 +0300

Ping!  Any further comments or suggestions?

> From: Jen-Chieh Shen <jcs090218 <at> gmail.com>
> Date: Mon, 26 May 2025 05:58:11 -0700
> Cc: Eli Zaretskii <eliz <at> gnu.org>, 78521 <at> debbugs.gnu.org
> 
> > What I cannot deduce from this snippet, is if the Dired buffer at PATH was previously 
> > opened or had any marked files in it.
> 
> It wasn't previously opened. 
> 
> >  Could you check that (dired-get-marked-files) returns nil or call (dired-unmark-all-marks)
> > before invoking `package-dir-info`?
> 
> (dired-get-marked-files) doesn't return nil. I tried using (dired-unmark-all-marks), 
> but (dired-get-marked-files) still returns the file—in this case, the path to the Eask file.  
> 
> The latest test code:
> 
> ```elisp
> (with-temp-buffer
>   (dired path)
>   (dired-unmark-all-marks)
>   (eask--unsilent
>     (message "? %s" (dired-get-marked-files))  ; This returns the Eask-file path for some reason.
>     (eask-ignore-errors-silent (package-dir-info))))  ; still fail
> ```
> 
> The latest output:
> 
> ```
> 0 marks removed 
> 9? (/home/runner/work/cli/cli/test/jest/install/foo-mode/Eask) 
> 10Package lacks a file header
> ```
> 
> Thanks!
> 
> On Sun, May 25, 2025 at 8:08 AM Philip Kaludercic <philipk <at> posteo.net> wrote:
> 
>  Jen-Chieh Shen <jcs090218 <at> gmail.com> writes:
> 
>  > Hi, Philip.
>  >
>  > The error was covered by my error message. After going one level deep, the
>  > real error message is `Package lacks a file header `.
>  > It occurred with the following code, not `package-install-file` (sorry for
>  > the confusion).
>  >
>  > ``elisp
>  > (with-temp-buffer
>  >   (dired path)
>  >   (ignore-errors (package-dir-info)))  ; error occurred this line
>  > ```
> 
>  Right, I was expecting something like this.  We recently added a change
>  that allows marking files in Dired and having `package-dir-info' respect
>  this by only considering these files IF the current buffer is in
>  dired-mode /and/ the Dired buffer has marked files.  What I cannot
>  deduce from this snippet, is if the Dired buffer at PATH was previously
>  opened or had any marked files in it.  Could you check that
>  (dired-get-marked-files) returns nil or call (dired-unmark-all-marks)
>  before invoking `package-dir-info`?
> 
>  > The test package I'm trying to install is located at
>  > https://github.com/emacs-eask/cli/tree/master/test/jest/install/foo-mode.
>  >
>  > Thanks!
> 
>  Thank you for your cooperation!
> 
>  > On Thu, May 22, 2025 at 3:45 AM Philip Kaludercic <philipk <at> posteo.net>
>  > wrote:
>  >
>  >> Eli Zaretskii <eliz <at> gnu.org> writes:
>  >>
>  >> >> From: Jen-Chieh Shen <jcs090218 <at> gmail.com>
>  >> >> Date: Tue, 20 May 2025 17:08:38 -0700
>  >> >>
>  >> >> I recently encountered an error, No package in XXX, when using the
>  >> package-install-file function in
>  >> >> the latest Emacs snapshot. This function was working correctly as of
>  >> May 5, 2025, but started failing
>  >> >> sometime after May 8, 2025. I suspect there may have been a breaking
>  >> change introduced.
>  >> >>
>  >> >> This issue only affects the snapshot build—my CI tests cover Emacs
>  >> versions 26.3, 27.2, 28.2, 29.4, 30.1,
>  >> >> and the snapshot, and all versions except the snapshot pass. You can
>  >> view the test results here:
>  >> >> https://github.com/emacs-eask/cli/actions/runs/14904371642.
>  >> >
>  >> > Philip, could you please take a look at this issue?
>  >>
>  >> Can you elaborate what the tests are doing?  package-install-file works
>  >> fine for me on my end.
>  >>

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