Suppose one has installed SageMath using the conda package.
How does one then install optional packages?
It seems sage -i is not active there.
For example, what would be the replacement for
$ sage -i gap_jupyter # install Jupyter kernel for GAP 4.8
$ sage -i pari_jupyter # install Jupyter kernel for PARI/GP
$ sage -i r_jupyter # install Jupyter kernel for R
$ sage -i singular_jupyter # install Jupyter kernel for Singular
if one is using a conda-installed Jupyter and SageMath?
