Add miracle-wm or mutter as a supported window manager

[A-Shahbazi]

I did some research and it seems currently the only wayland compositors that support EGLstreams are miracle-wm and mutter. So it will be pretty useful to add either of them as supported window managers for legacy NVIDIA graphic cards users(as there are performance issues using nouveau for legacy NVIDIA cards due to unsupported memory reclocking.)

[stefonarch]

"Unsupported" just means:

1. it isn't tested (panel taskbar, desktop layer shell etc working
2. we ship no config file (the compositor has to start lxqt-session && exit compositor; shortcuts)

I tried compiling it from AUR and failed some month ago. I heard about Mir, miracle-wm and miriway andn their Nvidia-related advantages.

Did you try to set it in Session Settings, after doing the autostart as in 2. ?

[stefonarch]

It's not widely available: https://repology.org/project/miracle-wm/versions

[stefonarch]

As miracle-wm and mir fail building from AUR I tried it out in the latest Fedora 42 on a VM.

I could see some artefacts, found no way to set the keyboard layout and window handling is questionable in some circumstances:

But LXQt Session works fine, it can be started simply adding in ~/.config/miracle-wm.yaml

...
startup_apps:
  - command: lxqt-session && killall miracle-wm
...

If we decide to add it it will be started in startlxqtwayland by this option, similar to kwin and labwc:·

[stefonarch]

Incomplete list why miracle-wm it can't be officially supported atm

• Qterminal prompt is unresponsive after some commands
• Save/close buttons are not displayed in tiling dialog windows
• Many options (touchpad, mouse) are arguments of miracle-wm so hard to configure
• No window rules for float
• Keyboard layout configuration missing

If anyone want to try it: this patch for startlxqtwayland will work:

...
    exec $COMPOSITOR -c $XDG_CONFIG_HOME/lxqt/wayland/lxqt-niri.kdl

    elif [ "$COMPOSITOR" = "miracle-wm" ]; then
    fi
    exec $COMPOSITOR --exec lxqt-session 

elif [ "$COMPOSITOR" = "kwin_wayland" ]; then
...

Eventually use a custom config file --config $XDG_CONFIG_HOME/lxqt/wayland/lxqt-miracle-wm.yaml as argument.

[A-Shahbazi]

Did you try to set it in Session Settings, after doing the autostart as in 2. ?

No I didn't. Guess I'm not familiar with the new compositor config.

As miracle-wm and mir fail building from AUR I tried it out in the latest Fedora 42 on a VM.

I was able to compile mir-git and miracle-wm-git from AUR a couple of days ago.