conduit: warnings about deprecated functions

[DanBurton]

Just did a fresh clone, cabal configure && cabal build of conduit (0.2.2). Here are the deprecation warnings:

Control.Monad.Trans.Resource.hs

Control/Monad/Trans/Resource.hs:50:1:
    Warning: In the use of `mkTyCon'
             (imported from Data.Typeable):
             Deprecated: "either derive Typeable, or use mkTyCon3 instead"

Control/Monad/Trans/Resource.hs:66:30:
    Warning: In the use of `unsafeIOToST'
             (imported from Control.Monad.ST):
             Deprecated: "Please import from Control.Monad.ST.Unsafe instead; This will be removed in the next release"

Control/Monad/Trans/Resource.hs:67:1:
    Warning: In the use of `Lazy.unsafeIOToST'
             (imported from Control.Monad.ST.Lazy):
             Deprecated: "Please import from Control.Monad.ST.Lazy.Unsafe instead; This will be removed in the next release"

System.PosixFile.hsc

System/PosixFile.hsc:30:1:
    Warning: newtype `CInt' is used in an FFI declaration,
             but its constructor is not in scope.
             This will become an error in GHC 7.6.1.
    When checking declaration:
      foreign import ccall safe "static open" c_open
        :: CString -> Flag -> IO CInt

System/PosixFile.hsc:30:1:
    Warning: newtype `CInt' is used in an FFI declaration,
             but its constructor is not in scope.
             This will become an error in GHC 7.6.1.
    When checking declaration:
      foreign import ccall safe "static open" c_open
        :: CString -> Flag -> IO CInt

System/PosixFile.hsc:33:1:
    Warning: newtype `CInt' is used in an FFI declaration,
             but its constructor is not in scope.
             This will become an error in GHC 7.6.1.
    When checking declaration:
      foreign import ccall safe "static read" c_read
        :: FD -> Ptr Word8 -> CInt -> IO CInt

System/PosixFile.hsc:33:1:
    Warning: newtype `CInt' is used in an FFI declaration,
             but its constructor is not in scope.
             This will become an error in GHC 7.6.1.
    When checking declaration:
      foreign import ccall safe "static read" c_read
        :: FD -> Ptr Word8 -> CInt -> IO CInt

System/PosixFile.hsc:33:1:
    Warning: newtype `CInt' is used in an FFI declaration,
             but its constructor is not in scope.
             This will become an error in GHC 7.6.1.
    When checking declaration:
      foreign import ccall safe "static read" c_read
        :: FD -> Ptr Word8 -> CInt -> IO CInt

System/PosixFile.hsc:36:1:
    Warning: newtype `CInt' is used in an FFI declaration,
             but its constructor is not in scope.
             This will become an error in GHC 7.6.1.
    When checking declaration:
      foreign import ccall safe "static close" close :: FD -> IO ()

[snoyberg]

Thanks for the heads-up on this. Could you file all of this in a
Github issue? I think for the moment, I'm not going to fix any of
these warnings, since the official compiler for the HP, and thus
what's available in most distros, is still 7.0, and I don't think most
of the changes will work there. Once 7.6 starts to have release
candidates, we can evaluate whether we'll drop 7.0 support or use
conditional compilation.

Thanks

[jhance]

Haskell Platform seems to be in need of a ghc update :)

[snoyberg]

Funny you should comment on this today, I just pushed a commit a few hours ago to fix these warnings.