GHC 7 compiles fine, but there's an additional warning during linking.
$ system_profiler SPSoftwareDataType | grep "System Version"
System Version: Mac OS X 10.6.7 (10J869)
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.0.2
$ cat hello.hs
#!/usr/bin/env runhaskell
module Main where
main :: IO ()
main = putStrLn "Hello World"
$ ghc --make hello.hs
[1 of 1] Compiling Main ( hello.hs, hello.o )
Linking hello ...
ld: warning: -read_only_relocs cannot be used with x86_64
$ ./hello
Hello World
Cheers,
Andrew Pennebaker