This is not valid anymore, as 8.10 and 9.04 are quite ancient now, and reached their EOL years ago. I would mark it as "Won't fix" or "Abandoned" but apparently it's not an option.
** Changed in: graphviz (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/370368 Title: package libgraphviz4 2.20.2-3ubuntu2 failed to install/upgrade: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/graphviz/+bug/370368/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs