I'm trying to build Bazaar using 'python-build-system'.  Bazaar requires
Zlib (from Python) and I fail to find out how to build Python with Zlib.

It should be possible to import it like so:

  # python
  >>> import zlib

According to this [1], Zlib can be located here:

  [...]/lib/python2.7/lib-dynload/zlib.so

'configure' doesn't have anything related too.

[1] http://stackoverflow.com/a/9727418