r2rs-rfit is used at run time in 6 crates. It is a direct run-time dependency in 5 crates. It's used only as a dev dependency in 3 crates.

Depender (with downloads and own rev deps) r2rs-rfit version
r2rs ~0.1
3 strafe-datasets ~0.1
1 strafe-numerics ~0.1
2 strafe-plot ~0.1
2 strafe-tests ~0.1