# dpkg -P libsdl1.2debian-oss
dpkg: dependency problems prevent removal of libsdl1.2debian-oss:
 libsdl1.2debian depends on libsdl1.2debian-oss (= 1.2.7+1.2.8cvs20041007-4.1) | libsdl1.2debian-all (= 1.2.7+1.2.8cvs20041007-4.1) | libsdl1.2debian-esd (= 1.2.7+1.2.8cvs20041007-4.1) | libsdl1.2debian-arts (= 1.2.7+1.2.8cvs20041007-4.1) | libsdl1.2debian-alsa (= 1.2.7+1.2.8cvs20041007-4.1) | libsdl1.2debian-nas (= 1.2.7+1.2.8cvs20041007-4.1); however:
  Package libsdl1.2debian-oss is to be removed.
  Package libsdl1.2debian-all is not installed.
  Package libsdl1.2debian-esd is not installed.
  Package libsdl1.2debian-arts is not installed.
  Package libsdl1.2debian-alsa is not installed.
  Package libsdl1.2debian-nas is not installed.
dpkg: error processing libsdl1.2debian-oss (--purge):
 dependency problems - not removing
Errors were encountered while processing:
 libsdl1.2debian-oss