I installed the MicroM8 runner and tried to manually configure an Apple II game by selecting the runner and pointing it to an Apple II floppy. Debug output shows a “No game found in library” error, but no indication of specifically what file it is looking for that it can’t find.
~$ lutris -d lutris:rungame/10
2021-10-10 18:18:51,525: Initializing lutris
2021-10-10 18:18:52,016: Downloading DXVK releases to /home/********/.local/share/lutris/runtime/dxvk/dxvk_versions.json
2021-10-10 18:18:52,017: Runtime updated. Initialization complete.
INFO 2021-10-10 18:18:52,019 [application.do_command_line:315]:Lutris 0.5.8.3
INFO 2021-10-10 18:18:52,019 [startup.check_driver:57]:Running Intel Mesa driver 21.2.1 on Mesa Intel(R) Xe Graphics (TGL GT2) (0x9a49)
INFO 2021-10-10 18:18:52,019 [startup.check_driver:69]:GPU: 8086:9A49 1558:51A1 (i915 drivers)
MESA-INTEL: warning: Performance support disabled, consider sysctl dev.i915.perf_stream_paranoid=0
WARNING 2021-10-10 18:18:52,115 [application.do_command_line:455]:No game found in library
INFO 2021-10-10 18:18:52,115 [application.do_shutdown:598]:Shutting down Lutris
INFO 2021-10-10 18:18:52,118 [application.do_shutdown:598]:Shutting down Lutris