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[1 of 3] Processing user
  [1 of 2] Compiling Map[sig]         ( user/Map.hsig, nothing )
  [2 of 2] Compiling User             ( user/User.hs, nothing )
[2 of 3] Processing ordmap
  Instantiating ordmap
  [1 of 1] Compiling Map              ( ordmap/Map.hs, T19244b.out/ordmap/Map.o )
[3 of 3] Processing main
  Instantiating main
  [1 of 1] Including user[Map=ordmap:Map]
    Instantiating user[Map=ordmap:Map]
    [1 of 2] Compiling Map[sig]         ( user/Map.hsig, T19244b.out/user/user-GzloW2NeDdA2M0V8qzN4g2/Map.o )

T19244b.bkp:11:27: error:
    • Type constructor ‘Key’ has conflicting definitions in the module
      and its hsig file
      Main module: type Key :: * -> Constraint
                   type Key = GHC.Classes.Ord :: * -> Constraint
      Hsig file:  type Key :: forall {k}. k -> Constraint
                  class Key k1
      The types have different kinds
    • while checking that ordmap:Map implements signature Map in user[Map=ordmap:Map]