Does anyone know if/where I can find a specification for the .hi files generated by GHC? I ask because I want to write an omni-completion plugin for Vim to make Haskell hacking a bit nicer.
you might find it easier to use GHCi's :browse command
$ ghc -e ':browse Control.Concurrent.MVar'
modifyMVar :: MVar a -> (a -> IO (a, b)) -> IO b
modifyMVar_ :: MVar a -> (a -> IO a) -> IO ()
readMVar :: MVar a -> IO a
swapMVar :: MVar a -> a -> IO a
withMVar :: MVar a -> (a -> IO b) -> IO b
data MVar a = GHC.IOBase.MVar (GHC.Prim.MVar# GHC.Prim.RealWorld a)
addMVarFinalizer :: MVar a -> IO () -> IO ()
isEmptyMVar :: MVar a -> IO Bool
newEmptyMVar :: IO (MVar a)
newMVar :: a -> IO (MVar a)
putMVar :: MVar a -> a -> IO ()
takeMVar :: MVar a -> IO a
tryPutMVar :: MVar a -> a -> IO Bool
tryTakeMVar :: MVar a -> IO (Maybe a)
that is what the haskell mode plugins for vim use, for one
of their completion modes, anyway;-)
http://www.cs.kent.ac.uk/~cr3/toolbox/haskell/Vim/
(actually, that completion is wrt to imported identifiers,
so we simply do a ':browse *