$ wget http://xpra.org/beta/bionic/main/binary-amd64/xpra_3.0-20190622r23019-1_amd64.deb $ dpkg -x xpra_3.0-20190622r23019-1_amd64.deb ./python3-xpra-deb $ head python3-xpra-deb/usr/bin/xpra #!/usr/bin/python2
Despite the fact that the script is python3 by default in source form: browser/xpra/trunk/src/scripts/xpra
Hopefully fixed in r23042.
Fix verified using buster beta builds:
$ dpkg -x xpra_3.0-20190630r23052-1_amd64.deb ./python3-xpra-deb $ head -n 1 python3-xpra-deb/usr/bin/xpra #!/usr/bin/python3
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2343