A copy under .variants/ exists to hold a content its primary does
not. 29 held bytes another file already carried, under a second or
third identity: msx.rom and MSX.ROM variants equal to
MSX_8020-20bios.rom, naomi2.zip.da79eca4 whose suffix named the
primary's sha1 rather than its own. dedup now removes such a copy,
keeping one when only variants hold the content. The LaserActive
PAC-S10 BIOS lived only under .variants/ while RetroBat names it
without a hash; it moves beside its siblings.
Recalbox checks geolith/neocd.zip by the composite md5 of its members,
which is front-sp1.bin then top-sp1.bin: the Front and Top Loader
BIOS geolith reads inside neocd.zip, both already collected. The
archive is rebuilt as a TorrentZip variant and Recalbox's last
missing BIOS resolves.
Abdessamad Derraz