It can not recignize kernels installed normally, for example through nix-shell -p python311Packages.ipykernel. They have to be installed like that, then run python3 -m ipykernel install --user, which is not good for nixOS, where it should be declarative.
[2024-04-02 ti. 16:59]
/home/olai/nvim/config/plugins/org/default.nix