lcms2-sys is used at run time in 14 crates (of which 2 optionally). It is a direct run-time dependency in 3 crates. It's used only as a dev dependency in 8 crates.

Depender (with downloads and own rev deps) lcms2-sys version
22K 6 lcms2 ^4.0.4
2.3K glycin ^4.0.4
350 pngquant optional ^4.0.3