I suggest moving the zimlib experimental version to unstable so that python-libzim can migrate.
- Bug#1028780: python-libzim: FTBFS: libzim/libwrapper.h:... Emmanuel Engelhart
- Bug#1028780: python-libzim: FTBFS: libzim/libwrapp... Bastian Germann
- Bug#1028780: python-libzim: FTBFS: libzim/libwrapp... Bastian Germann