flake8 crashes with `optparse.OptionError`

[sgtsquiggs]

optparse.OptionError: option --no-isort-config: invalid keyword arguments: parse_from_config

flake8 related packages:

flake8 (2.5.5)
flake8-builtins (0.2)
flake8-commas (0.4.1)
flake8-comprehensions (1.2.1)
flake8-debugger (1.4.0)
flake8-isort (2.1.3)
flake8-mutable (1.1.0)
flake8-polyfill (1.0.1)
hacking (0.13.0)

[sgtsquiggs]

hacking is requiring flake8<2.6.0,>=2.5.4, which seems to be the problem.

😑