Buildroot overrides in Rawhide, was: GDBM upgrade in F17

[Jerry James]

On Wed, Sep 21, 2011 at 6:50 AM, Bruno Wolff III <bruno at wolff.to> wrote:
> Chain building is allowed for rawhide to help get groups of packages
> built.

The chain-build facility is very useful.  But when you've got a chain
of 3 packages to build, and the build of the second one fails, then
you're done for the day.  You can't restart the chain-build, because
the first package has already been built.  You can't restart the
chain-build from the second package, because the already-built first
package won't be available to build against until the next repo
compose.

Is there any way of addressing this that isn't prohibitively
expensive?  That is, can we either:
- make chain-build atomic, so the failure of any build causes all builds in
  the chain to be marked as failed (allows restarting the chain-build); or
- have a buildroot-override kind of functionality, where we can ask that the
  newly built packages be added to the Rawhide buildroot temporarily, so that
  the chain-build can be restarted at the failed build?

Regards,
-- 
Jerry James
http://www.jamezone.org/