{ writeCommand, lib, ... }:
let

  # command that ensures we use flake.nix during switch
  command = targetPath: ''
    nix-shell \
     -E "with import <nixpkgs> {}; mkShell { buildInputs = [ git (nixos { nix.package = nixFlakes; }).nixos-rebuild ]; }" \
     --run 'nixos-rebuild build --flake ${targetPath} -L --keep-going'
    '';

  secrets = name: {
    secrets.pass = {
      dir = toString ~/.password-store;
      name = "krops/${name}/secrets";
    };
    common_secrets.pass = {
      dir = toString ~/.password-store;
      name = "krops/common_secrets";
    };
  };

  desktopSecrets = {
    desktop_secrets.pass = {
      dir = toString ~/.password-store;
      name = "krops/desktop_secrets";
    };
  };

  source = {

    # only workhorse
    # property.file = toString ./submodules/property;

    assets.file = toString ./assets;
    configs.file = toString ./configs;
    library.file = toString ./library;
    modules.file = toString ./modules;
    #mqtt.file = toString ./mqtt;
    pkgs.file = toString ./pkgs;
    system.file = toString ./system;
    "flake.nix".file = toString ./flake.nix;

    #backup-module.file = toString ~/dev/backup;
    backup-module.git = {
      url = "https://git.ingolf-wagner.de/nix-modules/backup.git";
      ref = "1.3.3";
    };

    #kops-lib.file = toString ~/dev/krops-lib;
    krops-lib.git = {
      url = "https://git.ingolf-wagner.de/nix-modules/krops.git";
      ref = "1.0.3";
    };

    #cluster-module.file = toString ~/dev/cluster-module;
    cluster-module.git = {
      url = "https://git.ingolf-wagner.de/nix-modules/cluster.git";
      ref = "1.2.0";
    };

  };

in {
  sterni = writeCommand "/bin/sterni" {
    #source = lib.evalSource [ source (secrets "sterni") desktopSecrets ];
    source = lib.evalSource [ source ];
    target = lib.mkTarget "root@sterni.private";
    inherit command;
  };
}