Cannot export operator newtype
{-# LANGUAGE TypeOperators #-}
module Main (main, (-.->)(..)) where
main :: IO ()
main = return ()
newtype (f -.-> g) a = Fn { apFn :: f a -> g a }
Fails to compile with
[1 of 1] Compiling Main ( fn.hs, interpreted )
fn.hs:2:20: error: Not in scope: ‘-.->’
fn.hs:2:20: error:
The export item ‘(-.->)(..)’
attempts to export constructors or class methods that are not visible here
Trac metadata
Trac field | Value |
---|---|
Version | 8.0.1-rc1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |