The following packages have unmet dependencies.
  libcupsimage2-dev: Depends: libcupsimage2 (= 1.1.23-10sarge1) but 1.2.1-2bpo1 is to be installed
  libcupsys2-dev: Depends: libcupsys2-gnutls10 (= 1.1.23-10sarge1)