id,summary,reporter,owner,description,type,status,priority,milestone,component,resolution,keywords,cc,fix_version,see_also 586,zephyr 2 to zephyr 3 distro upgrade makes you lose,geofft,,"If you do a do-release-upgrade from a libzephyr3 release to a libzephyr4 one, you lose. Because debathena-zephyr-config et al. depend on libzephyr4-krb5 | libzephyr3-krb, the libzephyr3-krb you already had installed satisfies that dependency, meaning that nothing pulls in libzephyr4-krb5. When do-release-upgrade cleans up at the end of the upgrade, it doesn't remove libzephyr3-krb because it's still depended on by zephyr-config. Meanwhile, because things like pidgin depend on some form of libzephyr4, you end up with both libzephyr3-krb and libzephyr4 (no -krb5), and you're sad. The only fix I've been able to come up with is to create a debathena-libzephyr, which depends on libzephyr4-krb5 | libzephyr3-krb on releases that still have zephyr 2, and just libzephyr4-krb5 on releases that only have zephyr 3. And then depend on that everywhere we currently have a libzephyr4-krb5 | libzephyr3-krb dependency. (This allows us to accommodate the eventuality where zephyr 3 gets backported to Hardy + Jaunty)",defect,closed,normal,Summer 2010 (Lucid Deploy),--,fixed,,,,