feat: added --missing
flag to list and remove subcommands
#1056
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Addresses #1018.
This adds a flag
--missing
tolist
andremove
subcommands ofjupyter kernelspec
. By "missing", we mean that the interpreter (the first argument of spec["spec"]["argv"] of the json specification) does not exist. This simplifies removing kernels pointing to missing environments.I'm not sure how best to test this functionality. Basic smoke tests seem to work. I'm happy to put some more work into this if it seems worthwhile to include in
jupyter-client
.Thanks!