Difference in DuplicateRecordFields between 8.4 and 8.6
Wat.hs
{-# LANGUAGE DuplicateRecordFields #-}
module Wat where
data Record = Record { distinct :: String }
Foo.hs
module Foo where
import Wat (distinct)
showDistinct = show . distinct
Compiling with 8.6.4, installed from binary distribution:
> ghc-8.6.4 Wat.hs Foo.hs
[1 of 2] Compiling Wat ( Wat.hs, Wat.o )
[2 of 2] Compiling Foo ( Foo.hs, Foo.o )
Compiling with 8.4.4, installed from binary distribution:
> ghc-8.4.4 Wat.hs Foo.hs
[1 of 2] Compiling Wat ( Wat.hs, Wat.o )
[2 of 2] Compiling Foo ( Foo.hs, Foo.o )
Foo.hs:3:13: error: Module ‘Wat’ does not export ‘distinct’
|
3 | import Wat (distinct)
| ^^^^^^^^
import Wat
and import Wat (Record(distinct))
compile without errors in both 8.4.4 and 8.6.4.