nteract: Provide feedback when conda environments can't be found

When I open jupyter notebook I see:

selection_024

When I launch nteract, I only connect to (and only see) the R kernel. I don’t see any of my Python Kernels.

Until #357 is resolved, there needs to be some feedback to users about their environment. Ideas/TODOs:

Pop up a dialog with “Apologies, we don’t have conda environment detection yet - we’re still working on it in https://github.com/nteract/nteract/pull/847”
Provide a way to do diagnostics from the released app (no access to node at command line)
Provide a way to report an issue that encapsulates the diagnostics report

About this issue

To make at least one conda kernel show up in nteract, you can install a kernelspec from the environment:

source activate envName
conda install ipykernel
python -m ipykernel install --user

woo…! @rgbkrk that got it working.

I guess I must’ve installed the R kernel manually and not through conda