issues: 664363493

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
664363493 MDExOlB1bGxSZXF1ZXN0NDU1NjE0NzE4 4256 fix matplotlib errors for single level discrete colormaps 14808389 closed 0     16 2020-07-23T10:24:26Z 2021-03-07T13:31:42Z 2021-03-07T13:31:37Z MEMBER   0 pydata/xarray/pulls/4256

~I'm not quite sure what happened, but our upstream-dev CI doesn't fail anymore. Looking at the build log, the install of the dev version of matplotlib seems to fail, so this tries to additionally remove the matplotlib-base package to see if the error comes up again if we make sure we get the dev version of matplotlib.~

matplotlib released a preview version to PyPI so we can run our tests again. This follows the suggestion from https://github.com/pydata/xarray/issues/4226#issuecomment-663030222: convert single levels to degenerate levels.

  • [x] Closes #4226, towards #4947
  • [x] Passes pre-commit run --all-files
 
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