PatSyn
data PatSyn
mkPatSyn
patSynName
patSynArity
patSynIsInfix
patSynArgs
patSynType
patSynMatcher
patSynBuilder
patSynExTyVars
patSynSig
patSynInstArgTys
patSynInstResTy
patSynFieldLabels
patSynFieldType
tidyPatSynIds