Hi Thierry!
I've performed a fresh install of 11.2 (x86_64) with Openbox on another computer. I know you had to make some changes recently. I wanted to install compton, but it appears that compton is no longer available in the rolling version? I searched the packages on the NuTyX website, and it is showing that compton is available in the fixed version but not the rolling version.
So I'm using xcompmgr, and it's doing well...
...but I'm wondering if compton may become available later on? If not, it's not a problem.
Thanks Thierry!