That is odd, revno 464 added a dependency for Twisted>=10.1.0 to pip-requires, and on my latest tools/install_venv.py it pulled and installed Twisted-11.0.0.tar.bz2.
That is odd, revno 464 added a dependency for Twisted>=10.1.0 to pip-requires, and on my latest tools/install_ venv.py it pulled and installed Twisted- 11.0.0. tar.bz2.