firefox/run-wayland-compositor

#!/usr/bin/bash
# Run wayland compositor and set WAYLAND_DISPLAY env variable

set -x

echo export DESKTOP_SESSION=gnome > $HOME/.xsessionrc
echo export XDG_CURRENT_DESKTOP=GNOME > $HOME/.xsessionrc
echo export XDG_SESSION_TYPE=wayland >> $HOME/.xsessionrc

# Turn off the screen saver and screen locking
gsettings set org.gnome.desktop.screensaver idle-activation-enabled false
gsettings set org.gnome.desktop.screensaver lock-enabled false
gsettings set org.gnome.desktop.screensaver lock-delay 3600

# Disable the screen saver
# This starts the gnome-keyring-daemon with an unlocked login keyring. libsecret uses this to
# store secrets. Firefox uses libsecret to store a key that protects sensitive information like
# credit card numbers.
if test -z "$DBUS_SESSION_BUS_ADDRESS" ; then
    # if not found, launch a new one
    eval `dbus-launch --sh-syntax`
fi
eval `echo '' | /usr/bin/gnome-keyring-daemon -r -d --unlock --components=secrets`

if [ -z "$XDG_RUNTIME_DIR" ]; then
  export XDG_RUNTIME_DIR=$HOME
fi

. xvfb-run -s "-screen 0 1600x1200x24" -n 80 mutter --display=:80 --wayland --nested &
export DISPLAY=:80

if [ -z "$WAYLAND_DISPLAY" ] ; then
  export WAYLAND_DISPLAY=wayland-0
else
  export WAYLAND_DISPLAY=wayland-1
fi
sleep 10
retry_count=0
max_retries=5
until [ $retry_count -gt $max_retries ]; do
  if [ -S "$XDG_RUNTIME_DIR/$WAYLAND_DISPLAY" ]; then
    retry_count=$(($max_retries + 1))
  else
    retry_count=$(($retry_count + 1))
    echo "Waiting for Mutter, retry: $retry_count"
    sleep 2
  fi
done

env | grep "DISPLAY"