Here's the result from a server that's behind a slow mirror (so didn't get auto-updated to the broken version).
$ dpkg -S /usr/bin/pyvenv-3.4 python3.4: /usr/bin/pyvenv-3.4 $ apt-cache policy python3 python3: Installed: 3.4.0-0ubuntu2 Candidate: 3.4.0-0ubuntu2 Version table: *** 3.4.0-0ubuntu2 0 500 http://mirrors.linode.com/ubuntu/ trusty/main amd64 Packages 100 /var/lib/dpkg/status $ apt-cache policy python3.4 python3.4: Installed: 3.4.0-2ubuntu1.1 Candidate: 3.4.0-2ubuntu1.1 Version table: *** 3.4.0-2ubuntu1.1 0 500 http://mirrors.linode.com/ubuntu/ trusty-updates/main amd64 Packages 500 http://mirrors.linode.com/ubuntu/ trusty-security/main amd64 Packages 100 /var/lib/dpkg/status 3.4.0-2ubuntu1 0 500 http://mirrors.linode.com/ubuntu/ trusty/main amd64 Packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1503774 Title: SRU version (3.4.3-1ubuntu1~14.04.1) missing pyvenv scripts To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python3.4/+bug/1503774/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs