HsOpTy is tied to Generic definitions which is not a very good design
feature, indeed a bug. However, the check is easy to move from
tcHsType back to mk_inst_info and everything will be fine. Also see
HsOpTy is tied to Generic definitions which is not a very good design
feature, indeed a bug. However, the check is easy to move from
tcHsType back to mk_inst_info and everything will be fine. Also see