fontdrasil is used at run time in 9 crates.

Depender (with downloads and own rev deps) fontdrasil version
2 fea-rs ^0.0.1
5 fontir ^0.0.1
1 ufo2fontir ^0.0.1
1 glyphs-reader ^0.0.1
1 fontbe ^0.0.1
1 fontra2fontir ^0.0.1
1 otl-normalizer ^0.0.1
1 glyphs2fontir ^0.0.1
fontc ^0.0.1