polyhedron-faces is used at run time in 6 crates.

Depender (with downloads and own rev deps) polyhedron-faces version
950 Fullerene ^0.4
430 1 trimesh ^0.4
410 c60 ^0.4
190 1 dxlib ^0.3
130 dxlib_sample_0001 ^0.3
plotters-fullerene ^0.4