It's used at build time in 9 crates.

Depender apollo-hyper-libretro-build version
apollo-hyper-libretro-core-handy build ^0.1.0
apollo-hyper-libretro-core-beetle-ngb build ^0.1.0
apollo-hyper-libretro-core-beetle-psx build ^0.1.0
apollo-hyper-libretro-core-beetle-wswan build ^0.1.0
apollo-hyper-libretro-core-freechaf build ^0.1.0
apollo-hyper-libretro-core-freeintv build ^0.1.0
apollo-hyper-libretro-core-a5200 build ^0.1.0
apollo-hyper-libretro-core-beetle-vb build ^0.1.0
apollo-hyper-libretro-core-gearcoleco build ^0.1.0