conda environment.yaml using -e . in pip section doesn't work

[cjw296]

Details

Here's the environment.yaml:

Here's the build: https://readthedocs.org/projects/picky-conda/builds/7074334/

Expected Result

Environment to be correctly built, here's Travis doing it:

https://travis-ci.org/Simplistix/picky-conda/jobs/369093815#L1769

Actual Result

CondaValueError: pip returned an error.

[cjw296]

So, attempting to fix this, I made these changes to .readthedocs.yml:

simplistix/picky-conda@d58b62e

This then changes the problem to the one shown in https://readthedocs.org/projects/picky-conda/builds/7074413/:

Running Sphinx v1.7.2
/home/docs/checkouts/readthedocs.org/user_builds/picky-conda/conda/latest/lib/python2.7/site-packages/pkginfo/develop.py:45: UserWarning: No PKG-INFO found for path: /home/docs/checkouts/readthedocs.org/user_builds/picky-conda/checkouts/latest
  warnings.warn('No PKG-INFO found for path: %s' % self.path)

...that looks a lot like #3986

[stsewd]

I'm not very familiar with conda, can you provide a link to the docs for the pip option simplistix/picky-conda@d58b62e#diff-810d2af174ea428d3e9e7a9dcfab389aL13? Or this is the same issue as #3986 (rtd doesn't install with -e option)?

[stsewd]

Closing this as the user hasn't responded or given more information, feel free to reopen with more information if you are still having this problem :).

Also, I think this is the same as #3986