`panic' with packages

[Simon Peyton-Jones]

| >   Loading package foo ... linking ...
| >   /home/mechvel/t/u/lib/HSfoo.o: unknown symbol `__stginit_Prelude_'
| >   ghc-6.2.1: panic! (the `impossible' happened, GHC version 6.2.1):
| >         can't load package `foo'
| >   Please report it as a compiler bug to
| >   glasgow-haskell-bugs at haskell.org, or
| > http://sourceforge.net/projects/ghc/.

Sergey's point was also that the error message misled him.  
Perhaps we can expand the message to say

	Can't load package 'foo'
	If there are preceding 'unknown symbol' messages, perhaps
	package foo lacks a dependency in its configuration file?

Maybe we can even distinguish the two cases of (a) HSfoo.o was not found
etc from (b) unresolved references.  Then the error message could have
fewer
caveats "If there are... ".

Simon