Nope, tier 3 packages have quite a few inter-dependencies. There is currently only one tier 4 package. Quoting the website:
"Tier 4 frameworks can be mostly ignored by application programmers; this tier consists of plugins acting behind the scenes to provide additional functionality or platform integration to existing frameworks (including Qt)." Currently I can build all tier 3 packages except kdewebkit, which I think requires qtwebengine and qtwebview. Qtwebengine is going to take some effort, I've already made some progress, since I also need it to build calamares. Other than that I need to debug test failures, fixing all the easy ones will probably take me an afternoon. I've also made progress on sddm and hawaii-desktop. It would be nice if we could get the mesa update in sometime, and I've got a patch to xorg-server to enable Xephyr, which is required by sddm. [0] https://api.kde.org/frameworks/index.html
