I would like to ask for adding "file" filter to DNF's API. Thank you very much.
it's already there. dnf.query.Query.filter(file="/usr/bin/null") works. or you wanted something other?
No, it's not there: http://dnf.readthedocs.org/en/latest/api_queries.html#dnf.query.Query.filter
Merged in upstream. https://github.com/rpm-software-management/dnf/commit/b0c992169c37e39bbb6e01205299134ba8e6e2c0
dnf-plugins-core-0.1.5-1.fc21,hawkey-0.5.3-2.fc21,dnf-0.6.4-1.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/dnf-plugins-core-0.1.5-1.fc21,hawkey-0.5.3-2.fc21,dnf-0.6.4-1.fc21
Package hawkey-0.5.3-2.fc21, dnf-plugins-core-0.1.5-1.fc21, dnf-0.6.4-1.fc21: * should fix your issue, * was pushed to the Fedora 21 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing hawkey-0.5.3-2.fc21 dnf-plugins-core-0.1.5-1.fc21 dnf-0.6.4-1.fc21' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-2139/dnf-plugins-core-0.1.5-1.fc21,hawkey-0.5.3-2.fc21,dnf-0.6.4-1.fc21 then log in and leave karma (feedback).
hawkey-0.5.3-2.fc21, dnf-plugins-core-0.1.5-1.fc21, dnf-0.6.4-1.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.