Code review comment for lp:~junrrein/elementaryos/add-sources

Ok, if the answer is "it doesn't work without these and I don't know why", I'm fine with that and I just defer to Cody who's into recent versions of Apport.

Rico: I believe Apport is capable of picking the corresponding version of debug symbols package even if it has several versions (and possibly a newer version) available. Midori and Yorba do not run their own retracers, so the crashes submitted by PPA testers are processed by ours. Hence the references to PPAs not used in the OS.