Polybar
A fast and easy-to-use status bar
...Available in both the stable and unstable channels and can be installed with the command nix-env -iA nixos.polybar. Available in OBS repository, package is available both for openSUSE Leap 15 and Tumbleweed. Both release and git-master versions are available in the main repository. Polybar spell is available in the test grimoire and can be installed via cast polybar.