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

Depender (with downloads and own rev deps) heim-derive version
850 2 heim-cpu dev ^0.0.10
480 8 heim dev ^0.0.10
340 2 heim-host dev ^0.0.10
150 1 heim-disk dev ^0.0.10
150 2 heim-net dev ^0.0.10
140 1 heim-memory dev ^0.0.10
100 1 heim-sensors dev ^0.0.10
1 heim-process dev ^0.0.10
1 heim-virt dev ^0.0.10