rust-spice is used at run time in 3 crates (of which 1 optionally). It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) rust-spice version
130 spacerocks ^0.7.4
moontime ^0.7.8
kalast optional ^0.7
2.6K 2 anise dev ^0.7.6