let
  mbp-yadunut = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJXOpmWsAnl2RtOuJJMRUx+iJTwf2RWJ1iS3FqXJFzFG yadunut";
  penguin-yadunut = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOEg5wsPLOZvU6lT8cMUsStQqalh/Hw5u104QhOYPS8E yadunut@penguin";
  users = [
    mbp-yadunut
    penguin-yadunut
  ];

  penguin-host = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIF0NLOa9NNz7r3QODU0Oe/a5m+PFzcpM20aLwf+0wojT root@penguin";
  gc2-host = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIN2WBYhGKSXSYWwISsY1osfliVSS9J+W6uHBid5i2qey root@nut-gc2";
  systems = [
    penguin-host
    gc2-host
  ];
in
{
  "k3s.age".publicKeys = users ++ systems;
  "btrbk-keyfile.age".publicKeys = systems ++ [ mbp-yadunut ];
}