I have three questions:

1. Is the place to find logs /var/log/? I'm having some trouble finding the current log for the X session. There's /var/log/gdm/greeter.log and it also points to a /var/lib/gdm/.local/share/xorg/Xorg.0.log but it doesn't always seem to be up-to-date or for the current session.

2. Different question: is it possible to reset a channel or remove it? I have to do --allow-downgrades when doing guix pull and reconfigure now all the time because I forked it and rebased a commit. Can I just start from scratch with this channel in some way?

3. I picked the i3 window manager when installing Guix System and I'm having a hard time running eval $(ssh-agent) before it starts. I used to do that from an .xsessionrc but that does not work. It seems I could just use an .xsession file with ssh-agent and then i3 but I don't know if I'm missing out on some Guix config then.