Syntax.idr:6:7-9:1:When checking right hand side of foo: When checking an application of function Prelude.Classes.+: Type mismatch between String (Type of "argh") and Nat (Expected type) SyntaxTest.idr:5:7-6:1:When checking right hand side of foo: When checking an application of function Prelude.Classes.+: Type mismatch between String (Type of "argh") and Nat (Expected type)