Le dimanche 06 février 2022 à 14:17 +0000, Gottfried a écrit :
>  Hello,
> 
> I am new at GNU Guix and want to ask about the mailing list.
> 

Hello, and welcome. You may want to say whether you are using Guix
system or on a foreign distro. I am using Guix on Trisquel and on
Debian.

> Can I enter the mailing list and look at the topics there in order to
> learn from others? How I can do that?
> Or can I only send my questions to the mailing list in order to get
> answers?
> 

You can read, ask questions for help and answer other people's question
if you know a solution to their problem.

> I wanted to install evolution, hoping that I can use an email client
> in
> a graphical way. Before finisting the installation there was a
> message:
> 
> "The name org.gnome.evolution.dataserver.Sources5 was not provided by
> any .service files.
> 
> Does this mean I can´t install evolution?

Did you ask to install the evolution and evolution-dataserver?

I tried installing Evolution from Guix a while ago, I had some kind of
errors and since Evolution from Trisquel and Debian are working fine, I
did not try more.

If you are using Guix on Debian or Trisquel, I can try installing
evolution from Guix again in order to compare with you.

David.