purescript-0.15.17: tests/purs/failing/DeriveClauseCannotDerive.out
Error found: in module [33mMain[0m at tests/purs/failing/DeriveClauseCannotDerive.purs:7:11 - 7:18 (line 7, column 11 - line 7, column 18) Cannot derive a type class instance for [33m [0m [33m Main.MyClass Foo[0m [33m [0m since instances of this type class are not derivable. See https://github.com/purescript/documentation/blob/master/errors/CannotDerive.md for more information, or to contribute content related to this error.