Code review comment for lp:~mvo/snappy/snappy-lp1460152-workaround

@Ricardo: Indeed you are right :/ Sorry for overlooking this, at some point we need to add the ability for the upgrader to upgrade itself. So the best way seems to be going a systemd unit route (as Sergio suggested).

@Sergio: I pushed an alternative solution based on systemd to http://bazaar.launchpad.net/~mvo/ubuntu/vivid/ubuntu-core-config/lp1460152-workaround/revision/28 and then http://bazaar.launchpad.net/~mvo/ubuntu/vivid/ubuntu-core-config/lp1460152-workaround/revision/29. My original mtime based approach did not work, the md5sum one looks promising though.

The full diff is here:
https://code.launchpad.net/~mvo/ubuntu/vivid/ubuntu-core-config/lp1460152-workaround/+merge/261179

If the approach looks good this needs to go to the ppa and get a real-world test (i.e. 15.04 stable->edge upgrade). Please keep me updated via mail or telegram as I won't be on irc today.