Comment 2 for bug 1319153

There was a problem with the sources.list generation in the chroot, the linked branch fixes this.

However there is still the problem that the chroot expects to have a
  "g++-%s" % target_tuple
package to do the cross build. So your example will stil fail.

I would like to get feedback from Colin what we should do:
- generate a better error but leave the cases when there is no g++-%(target_tuple)s available
- support chroot for native == target arch
- support the amd64 -> i386 as a special case

Or none of the above :) ?