Can't use writeFile to write unicode characters.

I tried to the "locale" environmental variables to "en_US.utf8", but still I cannot write unicode characters.

source:

main = do
    hSetEncoding stdout utf8
    putStrLn "αρχίδια"
    writeFile "hello.txt" "σκατούλες"

output:

αρχίδια
commitBuffer: invalid argument (Illegal byte sequence)

without manually hSetEncoding stdin, putStrLn also fails with the same error message.

From what I was told on #haskell, on linux ghc uses setlocale to figure out what encoding to use, but this is not present in OpenBSD.

Simply making those functions read $LANG (I think) would solve this for OpenBSD, but I might be wrong.

Trac metadata

Trac field	Value
Version	7.0.4
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	libraries (other)
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