Stack trace on error (and packages)

[Simon Marlow]

> Also, less importantly, how do I generate packages?  I have a bunch of
> .o files (modules) all compiled using -package-name and -c,=20
> but I can't
> find the correct ghc flag to link them into a library (.a/Linux).

You use the usual 'ar' tool for making a .a library, something like:

	$ ar cru libfoo.a a.o b.o c.o

To make this into a package, see the section on packages in the user's
guide:

	http://www.haskell.org/ghc/docs/5.00/set/packages.html

Cheers,
	Simon