On Dec 17, 2008, at 10:54 AM, Sebastian Fischer wrote:
Would it be possible to put everything concerned with unique identifiers in GHC into a separate package on Hackage?
I have wrapped up (a tiny subset of) GHC's uniques into the package `uniqueid` and put it on Hackage: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/uniqueid It only provides type Id hashedId :: Id -> Int type IdSupply initIdSupply :: Char -> IO IdSupply splitIdSupply :: IdSupply -> (IdSupply,IdSupply) idFromSupply :: IdSupply -> Id instance Eq Id instance Ord Id instance Show Id The main difference is due to my fear of depending on the foreign function `genSymZh` which I replaced by a global counting IORef. The other difference is that the Show instance does not rely on GHC's static flags and can hence be used outside of GHC sessions. The code is on github: http://github.com/sebfisch/uniqueid Extensions welcome! Cheers, Sebastian