I seem to have suddenly started encounter the error error: option --single-version-externally-managed not recognized
when pip install
ing varions packages (including PyObjC
and astropy
). I've never seen this error before, but it's now also showing up on travis-ci builds for which nothing has changed.
Does this error indicate an out of date distribute? Or some incorrectly specified option in setup.py
? Or something else entirely?
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