Every hour automatically add all dirs in /mnt to chia farm, and remove dead mounts

chia-plotadder.nix

# Every hour automatically add all dirs in /mnt to chia farm, and remove dead mounts
{pkgs,...}:
{
  systemd = {
    services.plotAdder = {
      description = "chia plot adder service";
      requires = [ "chia.mount" ];
      wantedBy = [ "chia.mount" ];
      after = [ "chia.mount" ];
      serviceConfig = {
        ExecStart = pkgs.writeScript "plotadder" ''
              #!/run/current-system/sw/bin/zsh
              plotdirs=($(chia plots show | tail +5))
              for plotdir in $plotdirs ; do
                      if [[ ! -d "$plotdir" ]] ; then
                          chia plots remove -d "$plotdir"
                      fi
              done
              mounts=($(ls -d /mnt/*))
              for mp in $mounts ; do
                      # echo $mp
                      if (($plotdirs[(I)$mp])); then
                              # echo "$mp already added"
                      else
                              echo chia plots add -d "$mp"
                              chia plots add -d "$mp"
                      fi
              done
        '';
        User="chia";
        Group="chia";
      };
    };
    timers = {
      plotAdder = {
        enable = true;
        timerConfig = {
          OnCalendar = [ "*:00:00" ];
          RandomizedDelaySec = "60";
        };
        wantedBy = [ "timers.target" ];
      };
    };
  };
}