apa102-spi is used at run time in 3 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) apa102-spi version
140 trinket_m0 ^0.3
140 itsybitsy_m0 ^0.3
130 1 itsybitsy_m4 ^0.3