HEAD build failures

[Simon Marlow]

Ross Paterson wrote:
> I'm getting a mysterious failure in Text.Regex (in regex-compat).
> It can be kludged by adding ::ExecOption to one of the defaultExecOpt's
> there (after importing ExecOption), but on my reading of the FDs this
> shouldn't be necessary.  Perhaps it's connected to all the orphan
> instances in these packages.

Hmm, odd.

> Also, it seems that compiler/Makefile is missing dependencies for regex-*
> for stages 2 and 3.

Thanks.

I also just discovered that parsec needs to be in the core packages because 
ghc/utils/genprimopcode uses it.

Cheers,
	Simon