Hi Claes,
I managed to make projects ( project.deb) under Mint21 but I prefer DEBIAN11 the worry is that under MINT everything works ok ( see my post ) but under DEBIAN 11 I am confronted with a .ZST? file during the installation with GDEBI.
How to do ?? I am under DEBIAN 11 XFCE4 and I manage to do a : dpkg-deb -build project but to install I have this :
Dedian 11 is more difficult than MINT21 but I have the impression that it is stronger and more stable, that's my opinion, for me it is imposing but difficult for someone who doesn't know much about linux but I'm learning slowly.
Merci
/seb