It's used only as a dev dependency in 9 crates.

Depender (with downloads and own rev deps) heim-derive version
950 8 heim dev ^0.0.10
650 2 heim-host dev ^0.0.10
500 2 heim-net dev ^0.0.10
380 2 heim-cpu dev ^0.0.10
280 1 heim-process dev ^0.0.10
180 1 heim-disk dev ^0.0.10
150 1 heim-memory dev ^0.0.10
110 1 heim-sensors dev ^0.0.10
1 heim-virt dev ^0.0.10