mkSplitUniqSupply 'd' >>= \ ds_uniqs -> -- desugarer
mkSplitUniqSupply 'r' >>= \ ru_uniqs -> -- rules
mkSplitUniqSupply 'c' >>= \ c2s_uniqs -> -- core-to-stg
mkSplitUniqSupply 'd' >>= \ ds_uniqs -> -- desugarer
mkSplitUniqSupply 'r' >>= \ ru_uniqs -> -- rules
mkSplitUniqSupply 'c' >>= \ c2s_uniqs -> -- core-to-stg