parse_cfg is used at run time in 1 crate. It's used at build time in 10 crates (of which 9 optionally, 1 directly).

Number of dependers parse_cfg version Downloads/month
10 4.1.1 17K
1 2.0.0 0
Depender (with downloads and own rev deps) parse_cfg version
18K 1 asio-sys build ^4.1.1
cargoman ^2.0.0