conda recipe should probably use matplotlib-base

[jamesmyatt]

According to the conda-forge docs, the conda recipe should probably depend on the matplotlib-base package, rather than matplotlib: https://conda-forge.org/docs/maintainer/knowledge_base.html#matplotlib

Is this right? Does yellowbrick require pyqt as well or just matplotlib?

For example: conda-forge/geoplot-feedstock#19

Note that the conda-forge recipe uses matplotlib-base: https://github.com/conda-forge/yellowbrick-feedstock/blob/master/recipe/meta.yaml#L25

[bbengfort]

@jamesmyatt thanks for using Yellowbrick and thanks for the note about the conda recipe. Yellowbrick just requires matplotlib, not pyqt; we can look into it during our next conda release.