The games importers wrote through fixed .part names, the new options had
no help text, and romfolders stopped on the first setup the offline cache
lacked. RetroArch's rom folder map is regenerated from its source spec
(path null, as the schema says). The installer's Python 3.8 job imports
the games tests without pyyaml, so the region rules load lazily.
In a console folder an FBNeo set is looked up under its driver name
(msx_1942), the bare name being the arcade set's. A run given its list as
a file reads the games index from beside it or the cache only when
--for-games was not asked. The installer keeps to Python 3.8 syntax, and
the testing guide names test_install_games.
--for-games reads the card's rom folders through install/games/ and keeps
what the games need: per system what its default core reads, one region
where the content proves it (crc32 and size, a disc serial, a header the
core reads), an arcade set's BIOS parents. A game not recognised gets
every BIOS of its system and is named. --required-only keeps only what
starts. The plan and the line menu open on it when the card holds games,
everything one press away. A cache keeps what reading a card found.
Abdessamad Derraz