Actually the installation works on Windows, but there’s an issue with one of my own modules:
src\Colors\ColorRamp.hs:16:1: error: [-Worphans, -Werror=orphans]
Orphan instance: instance Unbox a => Unbox (Color4 a)
To avoid this
move the instance declaration to the module of the class or of the type, or
wrap the type with a newtype and declare the instance on the new type.
I never knew how to deal with the “orphan instance” warnings. Would you know? Otherwise, how to change the ghc options in order that it doesn’t throw an error for that?