Mojo appears to not be python3 compatible. There are some python tools which are py3-only. This prevents usage of mojo in the same environment as the newer tool (such as python-libjuju).
clients runtests: commands[0] | mojo --version
Traceback (most recent call last):
File "/home/rbeisner/git/charm-test-infra/.tox/clients/bin/mojo", line 11, in <module>
load_entry_point('mojo==0.4.5', 'console_scripts', 'mojo')()
File "/home/rbeisner/git/charm-test-infra/.tox/clients/lib/python3.6/site-packages/pkg_resources/__init__.py", line 570, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/home/rbeisner/git/charm-test-infra/.tox/clients/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2687, in load_entry_point
return ep.load()
File "/home/rbeisner/git/charm-test-infra/.tox/clients/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2341, in load
return self.resolve()
File "/home/rbeisner/git/charm-test-infra/.tox/clients/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2347, in resolve
module = __import__(self.module_name, fromlist=['__name__'], level=0)
File "/home/rbeisner/git/charm-test-infra/.tox/clients/lib/python3.6/site-packages/mojo/cli.py", line 27, in <module>
import mojo.project
File "/home/rbeisner/git/charm-test-infra/.tox/clients/lib/python3.6/site-packages/mojo/project.py", line 209
mkdirs(self.root, self.owner, mode=0700)
^
SyntaxError: invalid token
Octal expression syntax changed for Py3. Numbers with leading zeros are now invalid.