fonttools>=3.28.0
cu2qu>=1.5.0
glyphsLib>=3.0.3
ufo2ft>=2.2.0
MutatorMath>=2.1.1
defcon>=0.5.2
booleanOperations>=0.8.0

[lxml]
lxml>=4.2.4

[pathops]
skia-pathops>=0.2.0
