There is a `KeyError` exception when the `install_linux_packages.py` build script is ran with `--distro-id`:
```console
$ ./build_files/build_environment/install_linux_packages.py --distro-id arch
INFO: Distribution identifier forced by user to arch.
Traceback (most recent call last):
File "file:///blender/./build_files/build_environment/install_linux_packages.py", line 1656, in <module>
main()
File "file:///blender/./build_files/build_environment/install_linux_packages.py", line 1646, in main
distro_package_installer = PackageInstaller(settings) if settings.show_deps else get_distro_package_installer(settings)
File "file:///blender/./build_files/build_environment/install_linux_packages.py", line 1570, in get_distro_package_installer
return DISTRO_IDS_INSTALLERS[get_distro(settings)](settings)
KeyError: None
```
This happens because the `get_distro` function returns `None` if the distribution ID is forced with the `--distro-id` option, when it should return the provided value.
Pull Request: https://projects.blender.org/blender/blender/pulls/106461
8dae058768