let
  # Pin the deployment package-set to a specific version of nixpkgs
  # pkgs = import (builtins.fetchTarball {
  #   url = "https://github.com/NixOS/nixpkgs/archive/e6377ff35544226392b49fa2cf05590f9f0c4b43.tar.gz";
  #   sha256 = "1fra9wwy5gvj5ibayqkzqpwdf715bggc0qbmrfch4fghwvl5m70l";
  # }) {};
  pkgs = import <nixpkgs> {};

  nodes = import ./nodes.nix;

  compute = {
    # deployment.tags = [ "compute" ];

    fileSystems = {
      "/stokes" = {
        device = "10.1.63.100:/home";
        fsType = "nfs4";
        options = [
          "soft"
          "defaults"
          "noauto"
          "x-systemd.automount"
        ];
      };
    };

    systemd.automounts = [
      {
        where = "/stokes";
        wantedBy = [ "default.target" ];
      }
    ];
  };

  mkCompute = host:
  let
    ipoib = builtins.replaceStrings [".61."] [".63."] host.address;
    hw = ./hw + "/${host.name}.nix";
  in {
    "${host.name}" = {
      features = {
        inherit host;
        os.externalInterface = "eno33";
        hpc.compute = true;
        # k8s = { inherit etcdCluster; };
      };

      deployment.targetHost = host.address;

      # services.udev.extraRules = ''
      #   KERNEL=="ibp65s0", SUBSYSTEM=="net", ATTR{create_child}:="0x2222"
      # '';

      node = {
        # i40efix = true;
      };

      networking = {
        useDHCP = false;
        interfaces.eno33 = {
          useDHCP = false;
          ipv4.addresses = [ {
            address = host.address;
            prefixLength = 24;
          } ];
          ipv4.routes = [ {
            address = "10.1.62.2";
            prefixLength = 32;
            via = "10.1.61.100";
          } ];

        };
        interfaces.ibp65s0 = {
          useDHCP = false;
          ipv4.addresses = [ {
            address = ipoib;
            prefixLength = 24;
          } ];
        };
      };
      imports = [ ./cluster.nix hw ];
    }
    // compute;
};
in builtins.foldl' (a: n: a // mkCompute n) {} nodes
#{
    ## morph
    # network =  {
    #   inherit pkgs;
    #   description = "stokes";
    #   ordering = {
    #     tags = [ "frontend" "compute" ];
    #   };
    # };

    # inherit stokes;
#} // builtins.foldl' (a: n: a // mkCompute n) {} nodes