keyframe_derive is used at run time in 2 crates (of which 1 optionally). It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) keyframe_derive version
1.4K gdnative_tweener ^1.0
blue_engine_utilities optional ^1.0.0
8.4K 40 ggez dev ^1
good-web-game dev ^1.0.0