The following packages have unmet dependencies:
  python-twisted: Depends: python-twisted-conch (>= 1:0.7) but it is not going to be installed
                  Depends: python-twisted-mail (>= 0.3) but it is not going to be installed
                  Depends: python-twisted-lore (>= 0.2) but it is not going to be installed
                  Depends: python-twisted-names (>= 0.3) but it is not going to be installed
                  Depends: python-twisted-news (>= 0.2) but it is not going to be installed
                  Depends: python-twisted-web (>= 0.6) but it is not going to be installed
                  Depends: python-twisted-words (>= 0.4) but it is not going to be installed
E: Broken packages