workflow advice for bzr builder + pbuilder

[Tim Michelsen]

Hello,
I am packaging some cutting edge Scipy/Numpy addon packages to a PPA.
I frequently encounter problems (build failues) because something in the 
upstream changes.

I am using recipies on LP.

Now I want to use a local environment to debug faster.

Could you please advise me on a efficient workflow that uses bzr 
builddeb and pbuilder for this?

another user apparently was in the same situation:

http://irclogs.ubuntu.com/2012/03/27/%23launchpad.txt

[20:58] <audifahrer> dobey: yes, I use a receipe. I don't use pbuilder 
localy until now.
[21:01] <dobey> audifahrer: ok, you can use bzr dailydeb to get a source 
package for a recipe, and then you would use pbuilder to build that 
source package in a local chroot
[21:01] <dobey> audifahrer: and you can debug it there, instead of 
constantly trying to rebuild it on launchpad

Looking forward to your help.

Kind regards,
Timmie