Issue with conda actions

[asmeurer]

I'm still having issue with the conda support. It now works for the first action, but it breaks on the second action that uses it.

Traceback (most recent call last):
  File "/Users/aaronmeurer/anaconda3/lib/python3.7/site-packages/rever/activity.xsh", line 83, in __call__
    self.func(*args, **kwargs)
  File "rever.xsh", line 31, in build_docs
    with run_in_conda_env(['python=3.8', 'sphinx', 'myst-parser', 'numpy', 'sympy']):
  File "/Users/aaronmeurer/anaconda3/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)
  File "/Users/aaronmeurer/anaconda3/lib/python3.7/site-packages/rever/conda.xsh", line 45, in run_in_conda_env
    if env_exists(envname):
  File "/Users/aaronmeurer/anaconda3/lib/python3.7/site-packages/rever/conda.xsh", line 10, in env_exists
    envs = json.loads($(conda env list --json))["envs"]
  File "/Users/aaronmeurer/anaconda3/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/Users/aaronmeurer/anaconda3/lib/python3.7/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/Users/aaronmeurer/anaconda3/lib/python3.7/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
rewinding to 44c09b62cb5785e44e58396777a0661444fac08f

It also printed the envs json to the terminal, which may be part of the problem.

[asmeurer]

Might be related to me having another env named rever-env but not in the envs directory (I have no idea how that happened, might be another bug which may or may not be fixed already). I deleted it and it worked.

[scopatz]

Can you reproduce this still?

[asmeurer]

Yeah, it just happened to me again doing a versioned-hdf5 release. I think it goes away after a second run because it doesn't re-run the first action. The other rever-env I guess was unrelated.

[scopatz]

Strange, I wonder why the test suite is passing then