GHC.Prim problem

[Simon Marlow]

Ben Sinclair wrote:
> Hello, I've had a problem with GHC.Prim when compiling the darcs HEAD
> lately. When I compile it in the normal way with no special options
> 
>> sh boot && ./configure && make && make install
> 
> it compiles correctly, but if I attempt to compile
> 
>> module Main where
>>
>> import GHC.Prim
>>
>> main :: IO ()
>> main = return ()
> 
> then I get this output:
> 
>> $ ghc --make Main.hs -fglasgow-exts -v

>> Main.hs:3:0:
>>     Failed to load interface for `GHC.Prim':
>>       locations searched:
>> 	GHC/Prim.hs
>> 	GHC/Prim.lhs

It works for me, with last night's HEAD build.  Are you running GHC from the 
build tree, or installing it first?  (not that it ought to make a difference). 
If you say 'ghc-pkg describe base', does it list GHC.Prim as exposed?

While importing GHC.Prim should work, the right way is to import GHC.Exts instead.

Cheers,
	Simon