This is not an issue in yum v3.2.29 but we are seeing it in v3.4.3.

The pseudo repository “installed” is a FakeRepository object.

```._compare_providers()``` in v3.4.3 now does:

```
# Respect the repository priority for each provider, the default is 80
            pkgresults[po] += (100 - po.repo.compare_providers_priority) * 10
            self.verbose_logger.log(logginglevels.DEBUG_4,
                _('compare_providers_priority for %s is %s' % (po, po.repo.compare_providers_priority)))
```

the problem being that the FakeRepository class does not have ```compare_providers_priority``` (and so you get the error that is the Summary).

We worked around this for now by doing this at the top of our library:

```
if not hasattr(yum.packages.FakeRepository, 'compare_providers_priority'):
    yum.packages.FakeRepository.compare_providers_priority = 99
```