Support Conda Forge by default

[ericholscher]

It sounds like we should be supporting conda-forge by default, as it will have updated versions of packages we release to PyPI much sooner than the default conda install.

Sounds like we just need to add conda config --add channels conda-forge to our initial install via docker or in our calling of conda.

Would love contributions or guidance here on what the best path forward is.

[ericholscher]

Lots of conversation in #2378 about this.

[jakirkham]

Would recommend making sure conda-forge has higher channel priority that defaults. This is how things are built at conda-forge. So environments should be able to reproduce known working environments in conda-forge (to the extent one specifies them).

ref: https://conda.io/docs/channels.html#after-conda-4-1-0

[humitos]

@jakirkham so, what Eric said is the correct way of doing this since we are using 4.3.11 and

The command conda config --add channels new_channel adds the new channel to the top of the channel list, making it the highest priority

I proposed a PR at readthedocs/readthedocs-docker-images#34 but I'm not sure that is the way we should take. More thoughts there.

[humitos]

The PR got merged. Closing this one as fixed.