Public bug reported: Because of the dependency "node-ansi (>= 0.3.0-2)", you cannot backport npm to a PPA for trusty et al, as the ppa prefix is incompatible with the depends:
The following packages have unmet dependencies: npm : Depends: node-ansi (>= 0.3.0-2) but 0.3.0-2~ubuntu14.04.1~ppa1 is to be installed This needs ideally to be "node-ansi (>= 0.3.0-2~)" to allow backport packages as well. ** Affects: npm (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1542262 Title: npm not installable from backport PPA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/npm/+bug/1542262/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs