Please could someone confirm if this actually requires patching in Ubuntu? I'm not aware that Ubuntu uses "lib64", and "/usr/local" isn't used by system-provided packages anyway. What is the use case that fails in Ubuntu? Once answered please change the Ubuntu bug task status accordingly (Invalid or New depending on the answer I guess). ** Changed in: mailman (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1838866 Title: Mailman 2.1: hardcoded site-packages dir prefix doesn't work on some 64 bit filesystem layouts To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1838866/+subscriptions