Update ssh tunnel scripts with option to select a default environment to use about ncar-python-tutorial HOT 7 CLOSED

I had this in a previous version of the scripts, but took it out once deciding that these scripts should launch from the conda base environment. I don't have to do conda activate before running the script, so I am somewhat skeptical of your assertion that that is necessary.

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This is tied to #92, right? If we don't want users to change (base) then this functionality is needed.

@andersy005 I'm a little confused about how you worded the issue, though:

the ssh tunnel scripts in scripts/jlab require activating a conda environment with jupyter installed in it prior launching ./scripts/jlab/jlab-machine-name script"

seems to imply you need to have access to jupyter locally. That's not true, is it? You need to launch jupyter lab on the remote machine in an environment with jupyter (and, as @matt-long points out, currently the base environment fits the bill but that might change in the future)

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Also, whether or not base is activated depends on how the user has set up conda. For example, I have some old Python work that requires that I use the system-wide Python packages for the code to remain consistent. In order to prevent my conda install on Cheyenne from interfering with system packages, I have to disable autoactivation of the base environment:

conda config --set auto_activate_base false

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...so, if it wasn't obvious from what I said, that means that I need to conda activate base before doing anything.

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It seems to me that the best solution to accommodate everyone is to have the conda_env_name default to base.

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@mnlevy1981 You are correct that you need jupyter lab in the remote machine's conda environment. But I actually think that was what @andersy005 meant. I think @andersy005 actually meant that you need to have jupyter installed in the remote environment before you run the jlab-machine script on your local machine.

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Closing this as it's being handled in https://github.com/NCAR/jupyter-forward

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