Vdu_controls – automatically control external monitor brightness on Linux

I just discovered this:

A GUI that automatically changes the real monitor brightness based on presets you can configure (e.g. time of day or direction of the sun), or even just queries the current brightness of your exact location from the Internet to set the brightness.

This is in contrast to `xrandr --brightness` which doesn't actually change the monitor's backlight brightness, it just "changes the colour" to simulate brightness.

I like to work in a bright room but at night the monitors are way too bright, and the constant manual adjustment is annoying with shitty monitor touch buttons.

Needs ddcutil-service; for Ubuntu there's a handy PPA here: https://gitlab.com/w8jcik/ddcutil-service.deb#ppa-latest

If somebody makes a nixpkgs package for these, ping me and I will be reviewer and co-maintainer.