Champailler Stéphane <Stephane.Champailler@uliege.be> writes:

> Hello,
>
> I have given a shot today at emacs 30.0.91 on windows (don't shoot at me 🙂)

I started with Emacs on Windows :)
And I still use it, at work.

> I got some problems:
> - M-x packages-list-package is slow, 1-2 minute to complete. I'm
>       behind a company firewall. C-g is responsive still.
> - M-x packages-list-package-no-fetch is slow too, about 1 minute to
>       complete

Noticed your follow up comment on this being related to a proxy problem.
You might need to set HTTP_PROXY and HTTPS_PROXY environment variables.

> - I have installed lsp-mode package (20241025.1627). When trying to
>   start it, I get an error (see end of mail). This error doesn't
>   show up in emacs 29.4.

In general, lsp-mode problems should be brought up in their issue
tracker. If Emacs 30 broke something that lsp-mode depends on, I figure
we would know by now.

One theory, maybe you need to complete the package update for lsp and
_all_ of its dependencies to be "on the same page"?

Hope that helps,
Seb

--
Sebastián Monía
https://site.sebasmonia.com/