XWayland in proot

Setting up apps & dependencies

Setting up termux

Official f-droid termux may not work for this so get termux from https://github.com/termux/termux-app/actions

after install do some updates and installations
Just copy the code below in termux and done!

pkg install x11-repo -y
pkg install xwayland

Setting termux is done ✌️

Setting up Termux:Xwayalnd app

for now, this app is available here https://github.com/termux/termux-x11/actions

so download and install it

Using Termux:Xwayland to run proot-distro Linux

assuming you installed ubuntu with proot-distro with xfce4 installed

Here starts setp by step process

Open termux app the minimize it and open Termux:Xwayland app
then open termux and use

export XDG_RUNTIME_DIR=$TMPDIR
Xwayland :0 

this starts connection at port :0
Open a new session then start your prooted Linux

proot-distro login hippo --shared-tmp
# you can replace hippo
# you can use hippo --shared-tmp

export DISPLAY value to :0

export DISPLAY=:0

then invoke your de start script. for xfce4 it is startxfce4 and others may differ

startxfce4

That's all now if you open minimized Xwayland:Termux app you see xfce4 running

Further sources

https://github.com/termux/termux-x11

https://github.com/suhan-paradkar/termux-wayland/wiki/Launching-GUI-applications

https://github.com/wayland-project/wayland

https://at.projects.genivi.org/wiki/display/DIRO/Wayland+Application+on+Android