libvala-0.12-dev has a Replaces on libvala-0.10-dev, that doesn't work if you install the second one after the first one though, the other solution would be to use a conflicts or a diversion
** Changed in: vala (Ubuntu) Status: New => Confirmed ** Changed in: vala (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/765022 Title: package libvala-0.12-dev (not installed) failed to install/upgrade: trying to overwrite '/usr/share/aclocal/vala.m4', which is also in package libvala-0.10-dev 0.10.4-1ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vala/+bug/765022/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs