bug#57589: Guix hands on GDM with wayland

[Grigory Shepelev <shegeley@gmail.com>]

Had some info from Guix Matrix channel:
 > GDM does wayland too with the option set to #t. I was able to get it 
to work going back from sddm, but I had to remove the home folder and 
recreate it from scratch, since gnome session was crashing on login. I 
had no problem starting gnome on a new account so i figured something 
was hanging around that cause a problem even after deleting all caches 
and configs etc.
 > By “home folder” I mean my user’s directory /home/use

https://matrix.to/#/!jivGmMiiorFwdgwaxc:matrix.org/$W4HJQCzv8G0aHM3_PAFrtUaj6Q3aS18vMZCwlMch71I?via=matrix.org&via=hummingbard.com&via=privacytools.io 
<https://matrix.to/#/!jivGmMiiorFwdgwaxc:matrix.org/$W4HJQCzv8G0aHM3_PAFrtUaj6Q3aS18vMZCwlMch71I?via=matrix.org&via=hummingbard.com&via=privacytools.io>

Most likely will try for new user tomorrow

пн, 5 сент. 2022 г., 16:24 Grigory Shepelev <shegeley@gmail.com>:

    Oops. I accidentally replied privately to dev@jpoiret.xyz, not
    mentioning 57589@debbugs.gnu.org. I hope the history can be recovered
    from this message.

    Josselin recommended to

    - check permissions on /tmp/.X11-unix/ (gdm user should have r+w
    permissions)

          shegeley@zone51 /tmp$ ls -lah .X11-unix/
          total 0
          drwxrwxrwt 2 gdm      gdm    80 сен  5 16:12 ./
          drwxrwxrwt 6 root     root  160 сен  5 16:16 ../
          srwxrwxrwx 1 shegeley users   0 сен  5 16:12 X1
          srwxr-xr-x 1 gdm      gdm     0 сен  5 16:12 X1024

    -  check /var/lib/gdm/, doesn't have the proper permissions

         Hm. That's really strange. For some reason /var/lib/gdm had
         "transmission" as user-group. I assure you that I didn't explicitly
         do any "dirty stuff" like that permission changing in my config


         shegeley@zone51 /tmp$ sudo ls -lah /var/lib/gdm
         total 0
         drwx------ 1 gdm  gdm           38 авг 26 21:46 .
         drwxr-xr-x 1 root root         248 авг 28 18:37 ..
         drwxr-xr-x 1  973 transmission  62 авг 26 21:46 .cache
         drwx------ 1  973 transmission  44 авг 26 21:46 .config
         drwx------ 1  973 transmission  10 авг 26 21:46 .local
         shegeley@zone51 /tmp$ sudo chown -R gdm:gdm /var/lib/gdm
         shegeley@zone51 /tmp$ sudo ls -lah /var/lib/gdm
         total 0
         drwx------ 1 gdm  gdm   38 авг 26 21:46 .
         drwxr-xr-x 1 root root 248 авг 28 18:37 ..
         drwxr-xr-x 1 gdm  gdm   62 авг 26 21:46 .cache
         drwx------ 1 gdm  gdm   44 авг 26 21:46 .config
         drwx------ 1 gdm  gdm   10 авг 26 21:46 .local


    After changing it was able to launch into GDM, but with X11 as display
    manager :( Attached new logs.


    On 05.09.2022 10:23, Josselin Poiret wrote:
     > Hi again,
     >
     > Grigory Shepelev<shegeley@gmail.com> writes:
     >
     >> My config is heavily depends on it's directory (passing it with
     >> --load-path). I can (and will) publish it all (I've been
    planning to do
     >> so) but I'd like to polish few parts.
     >>
     >> Any exact part are you looking for in config?  I attached my
    system-wide
     >> services.
     > I asked for that partly because it helps identifying common
    errors, and
     > it's always better for people debugging to have access to all the
     > information, and partly because I couldn't see anything that
    could help
     > in the logs.  However, it seems mutter can't write into
    /tmp/.X11-unix/,
     > could you check that the gdm user has the permission to write
    there?  It
     > should be rwxrwxrwx.  I don't see any modification in your config
    that
     > would prevent the x11-socket-directory-service from
    %desktop-services to
     > run.  Also, it seems that /var/lib/gdm/ doesn't have the proper
     > permissions, maybe because of [1].  You can try `sudo chown -R
    gdm:gdm
     > /var/lib/gdm` to fix that.
     >
     > [1]https://issues.guix.gnu.org/36508
     >
     > HTH.