bug#57589: Guix hands on GDM with wayland

[Grigory Shepelev]

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.