pprintErr' i (NotEquality tm ty) =
  pprintTerm i (delab i tm) <+>
  text "does not have an equality type" <+>
  parens (pprintTerm i (delab i ty))
pprintErr' i (NotEquality tm ty) =
  pprintTerm i (delab i tm) <+>
  text "does not have an equality type" <+>
  parens (pprintTerm i (delab i ty))
pprintErr' i (NotEquality tm ty) =
  pprintTerm i (delab i tm) <+>
  text "does not have an equality type" <+>
  parens (pprintTerm i (delab i ty))