copito: my flaky NixOS config

Bootstrapping

1. Put a bootable NixOS iso image on a usb thumbdrive, and boot it
2. Prime the box

   sudo nix --experimental-features 'nix-command flakes' run github:panchoh/nixos#helium
       

3. Manage your ssh key and then let Home Manager finish the setup

   run0 systemctl restart home-manager-pancho.service
       

4. Optimise the storage just this once

   nix store optimise --verbose
       

5. You are all set. Happy hacking!