gistfile1.txt

*Parser> :load "Calc.hs"
[1 of 3] Compiling ExprT            ( ExprT.hs, interpreted )
[2 of 3] Compiling Parser           ( Parser.hs, interpreted )
[3 of 3] Compiling Calc             ( Calc.hs, interpreted )

Calc.hs:50:14:
    Couldn't match type ‘Integer’ with ‘Mod7’
    Expected type: Integer -> Mod7 -> Mod7
      Actual type: Mod7 -> Mod7 -> Mod7
    In the first argument of ‘flip’, namely ‘mod’
    In the expression: flip mod 7
Failed, modules loaded: Parser, ExprT.