I moved to Conky.

Eww, Rain

Informational Eww widgets to work in conjunction with KDE Plasma.

Somewhat documented. A couple of points:

• Official documentation;
• widgets.wallet.yuck links to not included files for obvious reasons;
• Nushell scripts would be identical to bash scripts (or any other, I guess), it’s just what I use;
• I still use KDE Plasma Task Manager and System Tray;
• I don’t use the built-in variables for disk space and network speed, I find them inaccurate.