# Pastebin VqT6CteH
hs-cimple/src/Language/Cimple/Annot.hs:18:29: error: [GHC-39999]
    • Could not deduce ‘Eq (AnnotF attr a)’
        arising from the head of a quantified constraint
        arising from the 'deriving' clause of a data type declaration
      from the context: Eq attr
        bound by the deriving clause for ‘Eq1 (AnnotF attr)’
        at src/Language/Cimple/Annot.hs:18:29-31
      or from: Eq a
        bound by a quantified context
        at src/Language/Cimple/Annot.hs:18:29-31
    • When deriving the instance for (Eq1 (AnnotF attr))
   |
18 |     deriving (Show1, Read1, Eq1) via FunctorClassesDefault (AnnotF attr)
   |                             ^^^