python-numpy doc related build failure

Binary package hint: python-numpy

Even if I allow python-numpy to build against Universe, the docs fail to build:

running scons
running build_scripts
  adding 'build/scripts.linux-i686-2.6/f2py2.6' to scripts
   dh_auto_test
# build doc only for default python version
(export MPLCONFIGDIR=. ; make -C doc html PYTHONPATH=../build/lib.linux-i686-2.6)
make[1]: Entering directory `/home/python-numpy-1.4.1/doc'
mkdir -p build
touch build/generate-stamp
mkdir -p build/html build/doctrees
LANG=C sphinx-build -b html -d build/doctrees source build/html
Running Sphinx v1.0.1

Exception occurred:
  File "/home/python-numpy-1.4.1/doc/sphinxext/numpydoc.py", line 136, in get_directive
    raise RuntimeError("No directive named '%s' found" % name)
RuntimeError: No directive named 'function' found
The full traceback has been saved in /tmp/sphinx-err-lDrgdf.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
Either send bugs to the mailing list at <http://groups.google.com/group/sphinx-dev/>,
or report them in the tracker at <http://bitbucket.org/birkenfeld/sphinx/issues/>. Thanks!
1.4 1.4.1
make[1]: *** [html] Error 1
make[1]: Leaving directory `/home/python-numpy-1.4.1/doc'
make: *** [build-indep] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
debuild: fatal error at line 1337:

/tmp/sphinx-err-lDrgdf.log:
# Sphinx version: 1.0.1
# Docutils version: 0.7 release
# Jinja2 version: 2.5.4
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/sphinx/cmdline.py", line 172, in main
    warningiserror, tags)
  File "/usr/lib/pymodules/python2.6/sphinx/application.py", line 116, in __init__
    self.setup_extension(extension)
  File "/usr/lib/pymodules/python2.6/sphinx/application.py", line 253, in setup_extension
    mod.setup(self)
  File "/home/python-numpy-1.4.1/doc/sphinxext/numpydoc.py", line 119, in setup
    app.add_directive('np-' + name, wrap_mangling_directive(name, objtype))
  File "/home/python-numpy-1.4.1/doc/sphinxext/numpydoc.py", line 139, in wrap_mangling_directive
    base_directive = get_directive(base_directive_name)
  File "/home/python-numpy-1.4.1/doc/sphinxext/numpydoc.py", line 136, in get_directive
    raise RuntimeError("No directive named '%s' found" % name)
RuntimeError: No directive named 'function' found