Autostarting ncdc in tmux on NixOS

I keep my file servers peristently connected to the direct connect network using the ncdc client. Ncdc is for better or worse a curses client that must be attached to a terminal, so I need to start it at boot within a Tmux session.

Direct Connect (Wikipedia)

https://dev.yorhel.nl/ncdc

/etc/nixos/tmux.nix

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