Comment 10 for bug 458872

The long term solution should be that a package records its origin in the extended_states file. As a short term solution we can just disable the plugin as the auto-removable plugin will take care of most of the important cases. Its currently impossible for the code to distinguish between a package was was availalbe in the repo at some point and is no more (i.e. a package that is no longer downloadable) from a package that got manually installed.