1/1: Building Error (Error.idr)
Error: While processing right hand side of wrong. Sorry, I can't find any elaboration which works. All errors:
If Main.length: When unifying Nat and Vect ?n ?a.
Mismatch between: Nat and Vect ?n ?a.

Error.idr:12:18--12:19
 08 | length [] = Z
 09 | length (x :: xs) = S (length xs)
 10 | 
 11 | wrong : Nat -> Nat
 12 | wrong x = length x
                       ^

If Prelude.List.length: When unifying Nat and List ?a.
Mismatch between: Nat and List ?a.

Error.idr:12:18--12:19
 08 | length [] = Z
 09 | length (x :: xs) = S (length xs)
 10 | 
 11 | wrong : Nat -> Nat
 12 | wrong x = length x
                       ^

If Prelude.String.length: When unifying Nat and String.
Mismatch between: Nat and String.

Error.idr:12:18--12:19
 08 | length [] = Z
 09 | length (x :: xs) = S (length xs)
 10 | 
 11 | wrong : Nat -> Nat
 12 | wrong x = length x
                       ^