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Multiple kernels

Several versions of almond can be installed side-by-side. This is useful e.g. to have kernels for several Scala versions, or to test newer / former almond versions.

To install several version of the kernel side-by-side, just ensure the different installed versions have different ids (required) and display names (recommended).

For example, let's install almond for the scala 2.13.0 version,

$ cs launch almond --scala 2.13.0 -- --install

This installs almond with the default kernel id, scala, and default display name, "Scala".

Now let's also install almond for scala 2.12.9,

$ cs launch almond:0.13.1 --scala 2.12.9 \
      -- --install --id scala212 --display-name "Scala (2.12)"

--id scala212 ensures this kernel is installed along side the former, in a directory with a different name.

--display-name "Scala (2.12)" ensures users can differentiate both kernels, with the latter appearing in front-ends under the name "Scala (2.12)".