Specific reasons to favor pip vs. conda when installing Python packages

Question

I use miniconda as my default python installation. What is the current (2019) wisdom regarding when to install something with conda vs. pip?

My usual behavior is to

Answer 1

This is what I do:

1. Activate your conda virutal env
2. Use pip to install into your virtual env
3. If you face any compatibility issues, use conda

I recently ran into this when numpy / matplotlib freaked out and I used the conda build to resolve the issue.