Activating Python virtual environment fails on some shells

[nbdani]

On some Unix shells, the default virtual environment activation command will fail.

On fish shell, the correct command is:

source .env/bin/activate.fish

On tcsh, the command is:

source .env/bin/activate.csh

On nushell, the command is:

source .env/bin/activate.nu

[alwil]

Hi @nbdani,

I don't think it's feasible to cover all the shells and this workshop is not the place to do it. But really nice that you have pointed it out and since you've already provided a thorough list of shells with the commands, I have added it as a spoiler callout, i.e. it will be collapsed by default and the learners can choose to expand it. I think this is a good balance between flagging that there may be different commands to activate virtual environments and providing too much information to the learners.

This is addressed with commit 8aa3fbb , to be pulled with an upcoming PR.