Error found:
in module Main
at tests/purs/failing/DuplicateTypeClass.purs:4:1 - 4:8 (line 4, column 1 - line 4, column 8)

  Type class C has been defined multiple times:

    tests/purs/failing/DuplicateTypeClass.purs:4:1 - 4:8 (line 4, column 1 - line 4, column 8)


in type class declaration for C

See https://github.com/purescript/documentation/blob/master/errors/DuplicateTypeClass.md for more information,
or to contribute content related to this error.