Ubuntu – How to add a PPA from a previous release

I've been trying to get vim with the breakindent patch applied, but it's only available through Quantal, and I'm running Raring. Is there a way to force-install a PPA from a previous release? I tried manually downloading all the packages and running sudo dpkg -i but I get lots of errors about dependencies, some of which don't look like they can be resolved. Am I stuck with having to compile vim myself?