Apologies if there's already a way to do this. The use case is the installer, of course. Dnf provides the directory /etc/dnf/plugins directory for plugin configuration files, but as far as I can tell this location is not configurable. Anaconda needs to be able to change this location in order to configure plugins during the install. /etc in the install environment is not always writable (installing to a directory or an image file, for example), so we need to be able to tell plugins to read their configuration from a temporary directory.
The `pluginconfpath` config option already exists in DNF. PR that documents it: https://github.com/rpm-software-management/dnf/pull/240
hawkey-0.5.4-1.fc22,dnf-0.6.5-1.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/hawkey-0.5.4-1.fc22,dnf-0.6.5-1.fc22
Package hawkey-0.5.4-1.fc22, dnf-0.6.5-1.fc22: * should fix your issue, * was pushed to the Fedora 22 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing hawkey-0.5.4-1.fc22 dnf-0.6.5-1.fc22' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-5337/hawkey-0.5.4-1.fc22,dnf-0.6.5-1.fc22 then log in and leave karma (feedback).
dnf-plugins-extras-0.0.6-2.fc22,yum-utils-1.1.31-505.fc22,yum-3.4.3-505.fc22,hawkey-0.5.4-1.fc22,dnf-0.6.5-1.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/dnf-plugins-extras-0.0.6-2.fc22,yum-utils-1.1.31-505.fc22,yum-3.4.3-505.fc22,hawkey-0.5.4-1.fc22,dnf-0.6.5-1.fc22
dnf-plugins-extras-0.0.6-2.fc22, yum-3.4.3-505.fc22, dnf-0.6.5-1.fc22, yum-utils-1.1.31-505.fc22, hawkey-0.5.4-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
dnf-plugins-core-0.1.5-2.fc21,dnf-0.6.4-5.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/dnf-plugins-core-0.1.5-2.fc21,dnf-0.6.4-5.fc21
dnf-plugins-core-0.1.5-2.fc21, dnf-0.6.4-5.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.