i dunno bout python, i m new, i know this problem was nowhere to be seen on out of the box 1.1 or 1.0(dont remember) =)
the exact error i get with arena - app manager doesnt see it. It wouldnt let install the .deb file after manual download - says its not compatible.
After some tinkering with alternative opengles libs ppl posted on this forum, it let me install it from terminal(still not from app manager), but i cant find it in menus. Tuxracer, which i heard is gl, installed fine, and brain party gave same error(not compatible), alt libraries helped, it installed and plays now, but not OpenArena.
Also i remember clearly i had way more apps available in app manager in prev version, duke nukem for example, etc, the program just doesnt show em in the list. Thats kinda disappointing...=(
the extras are configured(i figure in 1.2 there is no devel\testing etc, its all united into /extras - at least old 1.x conf for devel\test doesnt work no more, and thats also what i read somewhere online...happy to be corrected if i m wrong)