repeatable instance of "impossible" error

[Simon Marlow]

On 21 October 2005 07:25, Seth Kurtzberg wrote:

> I have a case that produces the:
> 
> ghc-6.4.1: ghc-6.4.1: panic! (the `impossible' happened, GHC version
>         6.4.1): unknown exception
> 
> Please report it as a compiler bug to
> glasgow-haskell-bugs at haskell.org, 
> or http://sourceforge.net/projects/ghc/.
> 
> message.  This is repeatable.  I've saved a tar of this directory;
> contact me if the directory image is needed.

The error message has a bug in it, it should be reporting an unknown
package.  We fixed the bug in the error message, but you still have an
unknown package in your build.  Unfortunately we can't easily find out
which package GHC is looking for, but we could figure it out if you tell
us what's in your package database and what command-line options you're
giving to GHC.

Cheers,
	Simon