darcs patch: Add initial support for --enable/disable-library-vanilla

[Duncan Coutts]

On Fri, 2006-07-21 at 16:00 +0100, Duncan Coutts wrote:
> On Thu, 2006-07-20 at 11:49 -0700, Isaac Jones wrote:
> > Patches from Jeremy Shaw.  Duncan, can you look at these and apply?
> 
> The patch looks mostly ok to me. So it just turns on or off the building
> of normal libs.
> 
> The TH thing - can we check that this is really the right thing to do?
> 
> So the code is forcing normal libs to be built when the library uses TH
> (even if the user didn't want to build normal libs).
> 
> Note that they've not got a fix for this yet in GHC:
> 
> http://www.haskell.org/pipermail/template-haskell/2003-July/000135.html
> http://www.haskell.org/pipermail/template-haskell/2005-July/000466.html
> 
> http://hackage.haskell.org/trac/ghc/ticket/651
> 
> So we should check with the GHC devs that the behaviour in this patch
> will need to be part of any solution. Otherwise it seems a bit
> preemptive.

Since no one said anything I've committed the patch but without the TH
bit and with some other minor changes.

Duncan