Extra fast package index

After building Fedora Packages I thought maybe it is possible to have a super fast dependency resolution for packages using pre-compiled data in JSON format that is available from static URLs.

Right now running dnf install python3-gobject is slow, because it is downloading and parsing the whole index, then doing dependency resolution.

Maybe dnf could just fetch info on dependencies python3-gobject-3.40.1-1.fc34 - Fedora Packages and use that directly.

Will that speed up the installation?