Package: python-mapnik Version: 1:0.0~20151022-ab8b1f6-1 and others I've just backported mapnik 3.0.8 from Debian Sid to Debian Jessie. Quiet easy, but after installing python-mapnik, Mapnik complained about the datasource plugin directories not being registered.
After doing some tests with mapnik-config, ldd and ctypes, I've found the problem in paths.py in dist-/site-packages. The setup sets mapniklibpath to lib_path + "/mapnik". On Debian, Mapnik3 gets installed to ''/usr/lib/mapnik/3.0"; the missing plugins are in its subdirectory input. The installer sets the path to /usr/lib/mapnik[/input] instead of /usr/lib/mapnik/3.0[/input], which leads to the problem reported. Since mapnik-config finds the correct path, please use this output instead of a hardcoded string in https://github.com/mapnik/python-mapnik/blob/master/setup.py Read more about it here: https://github.com/mapnik/python-mapnik/issues/62
