bug#66985: 29.1; Issue with `package.el` upgrading builtin (edge-case)

[Sylvain Bougerel]

On Wed, Nov 8, 2023 at 3:51 PM Philip Kaludercic <philipk@posteo.net> wrote:
>
> What does it say when evaluating this on Emacs 29?
>
> Other values of interest
>
>   (package-installed-p 'seq '(2 0))   ;=> t
>   (package-installed-p 'seq '(2 23))  ;=> t
>   (package-installed-p 'seq '(2 24))  ;=> t
>   (package-installed-p 'seq '(2 25))  ;=> nil
>   (package-installed-p 'seq '(2 26))  ;=> nil
>   (package-installed-p 'seq '(2 100)) ;=> nil

This is what I got with "GNU Emacs 29.1 (build 1, x86_64-pc-linux-gnu,
GTK+ Version 3.24.38, cairo version 1.17.8)":

    (package-installed-p 'seq '(2 0)) ;=> t
    (package-installed-p 'seq '(2 23)) ;=> t
    (package-installed-p 'seq '(2 24)) ;=> nil
    (package-installed-p 'seq '(2 25)) ;=> nil
    (package-installed-p 'seq '(2 26)) ;=> nil
    (package-installed-p 'seq '(2 100)) ;=> nil


       - Sylvain