[BUG] Install to Disk (from Welcome screen) fails in do_startup_wl_actions() at pyanaconda/display.py

[yuravk]

Doing "Install to Disk", from our AlmaLinux 10 custom made Live Media's "Welcome Screen", causes system immediate reboot.

Nov 14 11:35:23 localhost anaconda.desktop[3312]: Starting installer, one moment...
Nov 14 11:35:23 localhost anaconda.desktop[3312]: terminal size detection failed, using default width
Nov 14 11:35:23 localhost anaconda.desktop[3312]: libreport is not available in this environment - bug reporting disabled
Nov 14 11:35:23 localhost anaconda.desktop[3312]: anaconda 40.22.3.13-1.el10.alma.1 for AlmaLinux Kitten 10 (pre-release) started.
Nov 14 11:35:23 localhost anaconda.desktop[3312]: * installation log files are stored in /tmp during the installation
Nov 14 11:35:23 localhost anaconda.desktop[3312]: * shell is available on TTY2 and in second TMUX pane (ctrl+b, then press 2)
Nov 14 11:35:23 localhost anaconda.desktop[3312]: * when reporting a bug add logs from /tmp as separate text/plain attachments
Nov 14 11:35:23 localhost anaconda[3312]: Traceback (most recent call last):
Nov 14 11:35:23 localhost anaconda[3312]:  File "/sbin/anaconda", line 474, in <module>
Nov 14 11:35:23 localhost anaconda[3312]:    display.setup_display(anaconda, opts)
Nov 14 11:35:23 localhost anaconda[3312]:  File "/usr/lib64/python3.12/site-packages/pyanaconda/display.py", line 369, in setup_display
Nov 14 11:35:23 localhost org.fedoraproject.Anaconda.Modules.Timezone[3365]: DEBUG:anaconda.modules.timezone.timezone:Time sources are set to: []
Nov 14 11:35:23 localhost anaconda[3312]: anaconda: core.threads: Thread Done: AnaWaitForConnectingNMThread (140401384097472)
Nov 14 11:35:23 localhost anaconda[3312]:    do_startup_wl_actions(xtimeout)
Nov 14 11:35:23 localhost anaconda[3312]:  File "/usr/lib64/python3.12/site-packages/pyanaconda/display.py", line 266, in do_startup_wl_actions
Nov 14 11:35:23 localhost anaconda[3312]:    wl_socket_path = os.path.join(os.getenv("XDG_RUNTIME_DIR"), constants.WAYLAND_SOCKET_NAME)
Nov 14 11:35:23 localhost anaconda[3312]:                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 14 11:35:23 localhost anaconda[3312]:  File "<frozen posixpath>", line 76, in join
Nov 14 11:35:23 localhost anaconda[3312]: TypeError: expected str, bytes or os.PathLike object, not NoneType

I was able to determine the XDG_RUNTIME_DIR environment variable is not defined.

The following anaconda packages were used in the Live Media:

anaconda-widgets-40.22.3.13-1.el10.alma.1.x86_64
anaconda-tui-40.22.3.13-1.el10.alma.1.x86_64
anaconda-core-40.22.3.13-1.el10.alma.1.x86_64
anaconda-gui-40.22.3.13-1.el10.alma.1.x86_64
anaconda-40.22.3.13-1.el10.alma.1.x86_64
kdump-anaconda-addon-006-16.20220714git7ca2d3e.el10.noarch
anaconda-install-env-deps-40.22.3.13-1.el10.alma.1.x86_64
anaconda-live-40.22.3.13-1.el10.alma.1.noarch

We do only branding related patching to anaconda.

gdm packages version is 47.0.

Some grep from /var/log/messages is available at:
https://pastebin.com/7Sg9414e

Will apprisiate any help.