{
  description = "nipsy's NixOS configurations";

  inputs = {

    disko = {
      url = "github:nix-community/disko";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    #ghostty = {
    #  url = "github:ghostty-org/ghostty";
    #};

    home-manager-stable = {
      url = "github:nix-community/home-manager/release-24.05";
      inputs.nixpkgs.follows = "nixpkgs-stable";
    };

    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nixos-hardware.url = "github:nixos/nixos-hardware";

    # per https://nixos-and-flakes.thiscute.world/nixos-with-flakes/downgrade-or-upgrade-packages
    #nixpkgs-67e692392.url = "github:nixos/nixpkgs/67e69239226f37168d1adb8d29bd61150756a03e";
    #nixpkgs-wine9_22.url = "github:nixos/nixpkgs/dea5930f0ed8c29d3758d5ade9898b4e99d80b74";
    nixpkgs-master.url = "github:nixos/nixpkgs";
    #nixpkgs-pr369712.url = "github:7c6f434c/nixpkgs/fix-tftp-hpa";
    nixpkgs-stable.url = "github:nixos/nixpkgs/release-24.05";
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

    nvidia-patch = {
      url = "github:icewind1991/nvidia-patch-nixos";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    sops-nix = {
      url = "github:Mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

  };

  outputs = {
    disko,
    home-manager-stable,
    home-manager,
    nixos-hardware,
    nixpkgs-master,
    #nixpkgs-pr369712,
    nixpkgs-stable,
    #nixpkgs-wine9_22,
    nixpkgs,
    nvidia-patch,
    self,
    sops-nix,
    ...
  } @ inputs: let
    inherit (self) outputs;
    systems = [
      #"aarch64-linux"
      #"i686-linux"
      "x86_64-linux"
      #"aarch64-darwin"
      #"x86_64-darwin"
    ];
    forAllSystems = nixpkgs.lib.genAttrs systems;
  in {

    nixosConfigurations = {

      arrakis = nixpkgs.lib.nixosSystem {
        specialArgs = { inherit inputs outputs; };
        modules = [
          #{
          #  environment.systemPackages = [
          #    ghostty.packages.x86_64-linux.default
          #  ];
          #}
          #({ config, pkgs, ... }:
          #  let
          #    overlay-dict-pr367392 = final: prev: {
          #      dict = nixpkgs-pr367392.legacyPackages."x86_64-linux".dict;
          #    };
          #  in {
          #    nixpkgs.overlays = [ overlay-dict-pr367392 ];
          #  }
          #)
          disko.nixosModules.disko
          ./hosts/arrakis
          home-manager.nixosModules.home-manager {
            home-manager.sharedModules = [ sops-nix.homeManagerModules.sops ];
            home-manager.users.root = import ./home/root/arrakis.nix;
            home-manager.users.nipsy = import ./home/nipsy/arrakis.nix;
          }
          sops-nix.nixosModules.sops
        ];
      };

      darkstar = nixpkgs.lib.nixosSystem {
        specialArgs = { inherit inputs outputs; };
        modules = [
          disko.nixosModules.disko
          ./hosts/darkstar
          home-manager.nixosModules.home-manager {
            #home-manager.sharedModules = [ sops-nix.homeManagerModules.sops ];
            home-manager.users.root = import ./home/root/darkstar.nix;
            home-manager.users.nipsy = import ./home/nipsy/darkstar.nix;
          }
          sops-nix.nixosModules.sops
        ];
      };

      ginaz = nixpkgs.lib.nixosSystem rec {
        specialArgs = { inherit inputs outputs; };
        modules = [
          disko.nixosModules.disko
          ./hosts/ginaz
          home-manager.nixosModules.home-manager {
            home-manager.sharedModules = [ sops-nix.homeManagerModules.sops ];
            home-manager.users.root = import ./home/root/ginaz.nix;
            home-manager.users.nipsy = import ./home/nipsy/ginaz.nix;
          }
          nixos-hardware.nixosModules.lenovo-yoga-7-14ARH7-amdgpu
          sops-nix.nixosModules.sops
        ];
      };

      # from https://nixos.wiki/wiki/Creating_a_NixOS_live_CD and https://chengeric.com/homelab/
      iso = nixpkgs.lib.nixosSystem {
        modules = [
          ({ modulesPath, pkgs, ... }: {
            environment.systemPackages = with pkgs; [
              acl
              bash
              bc
              bzip2
              conntrack-tools
              coreutils
              cpio
              curl
              diffutils
              dig
              dmidecode
              elinks
              encfs
              ethtool
              expect
              file
              findutils
              fio
              fping
              git
              gnugrep
              gnupatch
              gnused
              gnutar
              gptfdisk
              gzip
              htop
              iotop
              ipcalc
              iperf
              iproute2
              iputils
              jq
              less
              lshw
              lsof
              lvm2
              moreutils
              nano
              netcat-openbsd
              nettools
              nmap
              ntfs3g
              openldap
              openssl
              p7zip
              parted
              pciutils
              procps
              progress
              psmisc
              pv
              pwgen
              recode
              rsync
              sg3_utils
              smartmontools
              socat
              speedtest-cli
              sqlite
              sshfs
              strace
              sysstat
              tcpdump
              tftp-hpa
              traceroute
              tree
              tshark
              unixtools.xxd
              unrar
              unzip
              usbutils
              util-linux
              vim
              wdiff
              wget
              whois
              wireguard-tools
              xz
              zip
            ];

            imports = [ (modulesPath + "/installer/cd-dvd/installation-cd-minimal.nix") ];

            #isoImage.squashfsCompression = "gzip -Xcompression-level 1";

            nix.settings.experimental-features = [ "nix-command" "flakes" ];

            nixpkgs.config.allowUnfree = true;

            services.openssh = {
              enable = true;
              openFirewall = true;

              settings = {
                PasswordAuthentication = false;
                KbdInteractiveAuthentication = false;
              };
            };

            users.users = {
              nixos.openssh.authorizedKeys.keys = [ (builtins.readFile ./hosts/common/users/nipsy/keys/id_arrakis.pub) ];
              root.openssh.authorizedKeys.keys = [ (builtins.readFile ./hosts/common/users/nipsy/keys/id_arrakis.pub) ];
            };
          })
        ];
        system = "x86_64-linux";
      };

      kaitain = nixpkgs.lib.nixosSystem rec {
        specialArgs = { inherit inputs outputs; };
        modules = [
          disko.nixosModules.disko
          ./hosts/kaitain
          home-manager.nixosModules.home-manager {
            #home-manager.sharedModules = [ sops-nix.homeManagerModules.sops ];
            home-manager.users.root = import ./home/root/kaitain.nix;
            home-manager.users.nipsy = import ./home/nipsy/kaitain.nix;
          }
          sops-nix.nixosModules.sops
        ];
      };

      jupiter = nixpkgs.lib.nixosSystem rec {
        specialArgs = { inherit inputs outputs; };
        modules = [
          disko.nixosModules.disko
          ./hosts/jupiter
          home-manager.nixosModules.home-manager {
            #home-manager.sharedModules = [ sops-nix.homeManagerModules.sops ];
            home-manager.users.root = import ./home/root/jupiter.nix;
            home-manager.users.nipsy = import ./home/nipsy/jupiter.nix;
          }
          #sops-nix.nixosModules.sops
        ];
      };

      neptune = nixpkgs.lib.nixosSystem rec {
        specialArgs = { inherit inputs outputs; };
        modules = [
          disko.nixosModules.disko
          ./hosts/neptune
          home-manager.nixosModules.home-manager {
            #home-manager.sharedModules = [ sops-nix.homeManagerModules.sops ];
            home-manager.users.root = import ./home/root/neptune.nix;
            home-manager.users.nipsy = import ./home/nipsy/neptune.nix;
          }
          #sops-nix.nixosModules.sops
        ];
      };

      netboot = nixpkgs.lib.nixosSystem {
        modules = [
          "${nixpkgs}/nixos/modules/installer/netboot/netboot-minimal.nix"
          ({
            #isoImage.squashfsCompression = "gzip -Xcompression-level 1";
            nix.settings.experimental-features = [ "nix-command" "flakes" ];
            users.users = {
              nixos.openssh.authorizedKeys.keys = [ (builtins.readFile ./hosts/common/users/nipsy/keys/id_arrakis.pub) ];
              root.openssh.authorizedKeys.keys = [ (builtins.readFile ./hosts/common/users/nipsy/keys/id_arrakis.pub) ];
            };
          })
        ];
        system = "x86_64-linux";
      };

      richese = nixpkgs.lib.nixosSystem rec {
        specialArgs = { inherit inputs outputs; };
        modules = [
          disko.nixosModules.disko
          ./hosts/richese
          home-manager.nixosModules.home-manager {
            #home-manager.sharedModules = [ sops-nix.homeManagerModules.sops ];
            home-manager.users.root = import ./home/root/richese.nix;
            home-manager.users.nipsy = import ./home/nipsy/richese.nix;
          }
          sops-nix.nixosModules.sops
        ];
      };

      saturn = nixpkgs.lib.nixosSystem rec {
        specialArgs = { inherit inputs outputs; };
        modules = [
          disko.nixosModules.disko
          ./hosts/saturn
          home-manager.nixosModules.home-manager {
            #home-manager.sharedModules = [ sops-nix.homeManagerModules.sops ];
            home-manager.users.root = import ./home/root/saturn.nix;
            home-manager.users.nipsy = import ./home/nipsy/saturn.nix;
          }
          #sops-nix.nixosModules.sops
        ];
      };

      uranus = nixpkgs.lib.nixosSystem rec {
        specialArgs = { inherit inputs outputs; };
        modules = [
          disko.nixosModules.disko
          ./hosts/uranus
          home-manager.nixosModules.home-manager {
            #home-manager.sharedModules = [ sops-nix.homeManagerModules.sops ];
            home-manager.users.root = import ./home/root/uranus.nix;
            home-manager.users.nipsy = import ./home/nipsy/uranus.nix;
          }
          #sops-nix.nixosModules.sops
        ];
      };

    };

    overlays = import ./overlays {inherit inputs;};
    packages = forAllSystems (system: import ./pkgs nixpkgs.legacyPackages.${system});

  };

}