using thehttps://community.kde.org/Get_Involved/development#Setting_up_the_development_environment I encountered a few problem installing on Ubuntu 22.04

I put the src on a separate drive but when I ran the setup script it the PATH statement in .bashrc was incorrect, it assumed kde/src was in my home dir so I had to tweak.

export PATH="/develop/kde/src/kdesrc-build:$PATH"

Maybe use a KDESRC_HOME variable.

All the source entries in sources.list were comment out.

Ran into a dep problem with wayland-protocols. The build required 1.27 so I downloaded 1.31
from [url]https://www.linuxfromscratch.org/blfs/view/stable/general/wayland-protocols.html[url]
and built.

Ran into half dozen instances where I had to use the VERY HELPUL hint from the build script to run build-dep.

Thanks