It's used at build time in 15 crates (of which 8 optionally, 2 directly).

Number of dependers BuildEnv version Downloads/month
13 0.3.1 416K
2 0.2.0 97
Depender (with downloads and own rev deps) BuildEnv version
427K 4 libsystemd-sys build ^0.3.0
220 1 libzetta-zfs-core-sys build ^0.3