Is there a way to upgrade all currently installed packages which have had an urgency=high version uploaded to the archive since I last upgraded? (And any necessary dependencies, of course.) I'm thinking of this for the unstable distribution. The idea is to frequently do such upgrades to get any security fixes, and less frequently do an entire dist-upgrade.
(I know about testing, but for the machine in question I like to stay current with unstable most of the time.) I'm guessing that the information about the urgency fields might not be available except in the changelog, so it might be necessary to download the package and have a script look through the changelog. Could apt-listchanges be hacked to do this? Or could apt's new pinning mechanism help? Is urgency information stored anywhere besides the changelog? How do the testing scripts do this? Thanks for any suggestions, Dan