tags 832870 +patch thanksThis is caused by a missing build-dependency on python. This was previously masked by python being pulled in indirectly.
While working on this issue I also found the clean target was broken. So I fixed that too.
I have uploaded this fix to raspbian, debdiff at https://debdiffs.raspbian.org/main/0/0ad/0ad_0.0.20-1+rpi1.debdiff
