The target scraper treated every select in Config.in as unconditional
and never set the symbols Buildroot sets, so nearly every board listed
the same 171 cores and xroar, which needs OpenGL, reached none. Selects
now fire from their own config, to a fixed point, from the flags each
board file sets, with Buildroot's arch and OpenGL provider rules read at
the commit Batocera pins. A board that builds no image is no target.
Batocera's cores were read from configgen-defaults.yml, one per system,
and a hand-kept registry list overrode even that; DOSBox Staging,
melonDS DS and nine other cores a user can pick in ES were outside the
pack, while mamemess, which Batocera does not ship, was in. The
scraper now reads es_systems.yml, the registry list is gone, and the
target scraper names standalone emulators (amiberry, fsuae, vice)
instead of only the machines listed under them.
Abdessamad Derraz