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

Depender (with downloads and own rev deps) heim-derive version
950 1 heim-virt dev ^0.0.10
550 8 heim dev ^0.0.10
430 2 heim-host dev ^0.0.10
350 2 heim-cpu dev ^0.0.10
250 2 heim-net dev ^0.0.10
230 1 heim-disk dev ^0.0.10
190 1 heim-process dev ^0.0.10
190 1 heim-memory dev ^0.0.10
160 1 heim-sensors dev ^0.0.10