Hi,

https://github.com/flatwhatson/guix-channel

Contains a working Emacs 28.0.90.

Hope this helps,
Malte

On Tue, 11 Jan 2022, 20:42 Maxime Devos, <maximedevos@telenet.be> wrote:

> André A. Gomes schreef op di 11-01-2022 om 22:13 [+0300]:
> > Maxime Devos <maximedevos@telenet.be> writes:
> >
> > > > A log below.
> > > >
> > > > --8<---------------cut here---------------start------------->8---
> > > > configure: error: The installed libgccjit failed to compile and run
> a test program using
> > > > the libgccjit library; see config.log for the details of the failure.
> > > > [...]
> > >
> > > configure is telling that "config.log" has details, please include it.
> >
> > Right, but I couldn't figure out what's this file or where it's
> > located.
>
> You can pass --keep-failed to "guix build", then "config.log" should be
> in (a subdirectory) of /tmp/guix-build-aadcg-emacs-28.0.91-0
> (not sure about the directory name).
>
> Greetings,
> Maxime.
>