[arch-haskell] Unregistering lots of packages

[Don Stewart]

magnus:
> On Mon, Aug 24, 2009 at 9:02 AM, Abhishek Dasgupta<abhidg at gmail.com> wrote:
> > 2009/8/23 Magnus Therning <magnus at therning.org>:
> >> On Sat, Aug 22, 2009 at 11:35 PM, Don Stewart<dons at galois.com> wrote:
> >>> Unregistering lots of packages is quite slow now, since we run haddock
> >>> in the unregister script (to recompute the index?).
> >>>
> >>> Any thoughts on how to avoid it?
> >>
> >> Does pacman support some sort of post-{remove,install} operations?
> >>
> >> Everything else I can think of has the feeling of being incredibly
> >> hack-y or require user interaction.
> >>
> >
> > Yes, through the post_install() and post_remove() functions
> > in the install script (sample at /usr/share/pacman/proto.install)
> 
> Not exactly what I meant.  That is still per package, and if I
> understand Don correctly it's the fact that _every_ Haskell package
> does the same thing in its post_{install,remove}() (rebuilding the
> Haddock index) that is bothering him.  What I so clumsily tried to ask
> was if pacman has a post-{install,remove} action that _isn't_ per
> package but rather per invocation of pacman.  In this example, it
> would be nice to rebuild the haddock index once rather than once per
> package.

Ah, I see: it is rebuilding the index each time, which is slow. So bulk
remove (i.e. after I do a hackage build) is slow.

Maybe I should just use the chroot and blow that away instead. 

-- Don