Support Nim 1.2.x

contractabi/selector.nim

@@ -61,7 +61,7 @@ func solidityType*(Tuple: type tuple): string =
     names.add(solidityType(typeof parameter))
   "(" & names.join(",") & ")"
 
-func solidityType*(T: distinct type): string =
+func solidityType*[T: distinct](_: type T): string =
   solidityType(distinctBase T)
 
 func signature*(function: string, Parameters: type tuple = ()): string =

tests/contractabi/testDecoding.nim

@@ -4,7 +4,8 @@ import contractabi
 import ./examples
 
 type SomeDistinctType = distinct uint16
-func `==`*(a, b: SomeDistinctType): bool {.borrow.}
+func `==`*(a, b: SomeDistinctType): bool =
+  uint16(a) == uint16(b)
 
 suite "ABI decoding":