RE: -fwarn-unused-imports message

[Simon Marlow]

> ghc-pre-4.07  -fwarn-unused-imports
> 
> says to my   ` import M () '
> 
>   .../M.hs:42:
>   Warning: Module `M' is imported, but nothing from it is used
>  
> 
> Should it add  "except, maybe, instances"  ?
> Because removing this import may cause the error report about the 
> lack of some instances.

If instances are actually being imported and used, then the compiler
shouldn't produce this warning.  If you have an example to the contrary,
could you send it please?

Cheers,
        Simon