```
builder for '/nix/store/jz41wvwvkc6q55972ysdajm6k3vnv6r8-python2.7-sphinxcontrib-openapi-0.7.0.drv' failed with exit code 1; last 10 log lines:
configuring
no configure script, doing nothing
building
Executing setuptoolsBuildPhase
Traceback (most recent call last):
File "nix_run_setup", line 8, in <module>
exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))
File "setup.py", line 10, in <module>
with open(os.path.join(here, "README.rst"), "r", encoding="utf-8") as f:
TypeError: 'encoding' is an invalid keyword argument for this function
```
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