wl-gammactl VS wdisplays

I don't know what you mean by color management - is it the calibration of the display with xrite/argyll?

For ICC profiles colormgr can help: https://wiki.archlinux.org/title/ICC_profiles#Wayland

If you just need basic brightness, contrast and gamma, wl-gammactl should do that: https://github.com/mischw/wl-gammactl

BTW Hyprland is not required, it's just the most practical way to have shortcuts key mappings in Wayland

However, this does not work in Wayland since it obviously belongs to the X Window System. I started searching the web for a possible solution and found wl-gammactl, which is a GUI for wlroots (https://github.com/mischw/wl-gammactl) and the gnome-gamma-tool (https://github.com/zb3/gnome-gamma-tool), but neither of them seemed to work because of missing dependencies, which can't be installed or invalid version numbers of required packages (e.g. found 1.20 but need: '>=1.23'). When attempting to build the gnome-gamma-tool, the following error message appears (despite Colord being installed):

It's very much possible with Wayland. Whether Plasma supports it is another question, unfortunately. Great program though, you can control it with commands and set an invert screen colors keybind.

What would be the best way to implement this? I tried wl-gammactl https://github.com/mischw/wl-gammactl with those settings but the screen just goes fully white?

Probably it just support sway as said here on github

Wayland is the protocol applications use to talk to compositors. What you need to control (this kind of-, since I assume you want a software overlay) brightness depends on the compositor/desktop environment you use. For wlroots based compositors (wayfire, sway) wl-gammactl or wlr-brightness could be useful. For Gnome (below version 40) the soft-brightness extension looks like what you need.

For an arandr replacement, https://github.com/swaywm/sway/wiki/i3-Migration-Guide recommends wdisplays.

But, Sway also supports a Wayland protocol which allows other applications to configure the displays instead. You can read it here if you want the gritty details. My preferred application to configure Sway's outputs is wdisplays.

Sway with wdisplays?

You could have a look at wdisplays. Uses wlroots.

I run 3 monitors in a similar config manually configured with negative x values for the left most monitor, it worked ok, but now I use https://github.com/artizirk/wdisplays for an easy life

wdisplays comes to mind.

sway laptop user here (for almost 2 years I think?).

I spent a little while on this, but I migrated from i3, so I just ported every little section of my config bit by bit.

In terms of battery bar and other "bar" type things, I use waybar[0] which basically does all the things you'd expect by default (just install and it "works").

For multi-monitor, config, I initially setup with wdisplays[1] (think arandr for wayland) and then manually copied the positions into my sway config. Monitor positioning was the only thing I needed to setup (and telling it that one monitor was HDPI) and then all of the scaling and everything worked perfectly. This was my biggest selling point for wayland, I now get nice crisp fonts and application scaling works nicely (which was not the case with X).

volume control from the keyboard took no time, just a couple of extra lines.

There was some stuff to do with the clipboard (wl-clipboard[2]) and screenshots (grim[3] + slurp[4]) that required some setup, but again, just a few lines, and didn't take much mental load.

Oh and I needed to change my notifications daemon(dunst[5]), and chose to change my program launcher to one with a nicer interface and cleaner fonts (wofi[6]).

I think that's all the tweaking that I did. Oh, and I needed to do something with pipewire to sort out screensharing at the start, don't remember that too well though...

[0] https://github.com/Alexays/Waybar

[1] https://github.com/artizirk/wdisplays

[2] https://github.com/bugaevc/wl-clipboard

[3] https://github.com/emersion/grim

[4] https://github.com/emersion/slurp

[5] https://github.com/dunst-project/dunst

[6] https://hg.sr.ht/~scoopta/wofi

Try wdisplays.