Great news! Question for the fellow Jupyter Hub users: how do I expose users’ Conda environments to them?
EDIT: I meant `nb_conda_kernels` https://github.com/Anaconda-Platform/nb_conda_kernels
For Python :
$ ipykernel install --user --name myenv --display-name "My environment"
For R : > IRkernel::installspec()
As mentioned previously, nb_conda_kernels allows to automate this step.