python packages installed under wrong prefix

[Erno Kuusela]

Binary package hint: python

"python setup.py install --prefix=/tmp/test" results in the python package being installed under prefix /tmp/test/local:

erno@hat:~/src/moin-1.8.2$ python setup.py install --prefix=/tmp/test 2>&1 | head -11
running install
running build
running build_py
running build_scripts
running install_lib
running install_scripts
copying build/scripts-2.6/moin -> /tmp/test/local/bin
changing mode of /tmp/test/local/bin/moin to 755
[....]

this is current Jaunty.