{
  description = "System config";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

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

    flake-utils.url = "github:numtide/flake-utils";

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

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

    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-utils.follows = "flake-utils";
    };

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

    emacs-overlay = {
      url = "github:nix-community/emacs-overlay";
    };

    # nix-doom-emacs = {
    #   url = "github:nix-community/nix-doom-emacs";
    #   inputs.nixpkgs.follows = "nixpkgs";
    #   inputs.flake-utils.follows = "flake-utils";
    # };

    cq-flake = {
      url = "github:marcus7070/cq-flake";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-utils.follows = "flake-utils";
    };

    alejandra = {
      url = "github:kamadorueda/alejandra";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    ha-now-playing = {
      url = "git+ssh://git@git.datarift.nl/erwin/ha-now-playing.git?ref=main";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.utils.follows = "flake-utils";
      inputs.naersk.follows = "naersk";
      inputs.rust-overlay.follows = "rust-overlay";
    };

    pamedia = {
      url = "git+ssh://git@git.datarift.nl/erwin/pamedia-rs.git?ref=main";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.utils.follows = "flake-utils";
      inputs.naersk.follows = "naersk";
    };
  };

  outputs = {
    self,
    sops,
    ha-now-playing,
    pamedia,
    ...
  } @ inputs:
    with inputs; let
      defSystem = system: baseConfig:
        nixpkgs.lib.nixosSystem {
          system = "${system}";
          modules = [
            {_module.args.inputs = inputs;}
            {_module.args.self-overlay = self.overlay;}
            ({...}: {
              imports =
                builtins.attrValues self.nixosModules
                ++ [
                  {
                    nix.nixPath = ["nixpkgs=${nixpkgs}"];
                    nixpkgs.overlays = [
                      self.overlay
                      ha-now-playing.overlays.${system}
                      pamedia.overlays.${system}
                    ];
                  }

                  baseConfig
                  home-manager.nixosModules.home-manager
                  {home-manager.useUserPackages = true;}
                ];

              system.configurationRevision = nixpkgs.lib.mkIf (self ? rev) self.rev;
              nix.registry.nixpkgs.flake = nixpkgs;
            })
            sops.nixosModules.sops
          ];
        };

      defContainer = system: baseConfig:
        nixos-generators.nixosGenerate {
          pkgs = nixpkgs.legacyPackages.${system};
          format = "lxc";
          modules = [
            {_module.args.inputs = inputs;}
            {_module.args.self-overlay = self.overlay;}
            ({...}: {
              imports =
                builtins.attrValues self.nixosModules
                ++ [
                  {
                    nix.nixPath = ["nixpkgs=${nixpkgs}"];
                    nixpkgs.overlays = [
                      self.overlay
                      ha-now-playing.overlays.${system}
                      pamedia.overlays.${system}
                    ];
                  }

                  baseConfig
                  home-manager.nixosModules.home-manager
                  {home-manager.useUserPackages = true;}
                ];

              system.configurationRevision = nixpkgs.lib.mkIf (self ? rev) self.rev;
              nix.registry.nixpkgs.flake = nixpkgs;
            })
            sops.nixosModules.sops
          ];
        };
    in
      {
        overlay = import ./overlays;
        # overlay = final: prev: {
        #   unstable = import nixpkgs {
        #     system = "x86_64-linux";
        #     config.allowUnfree = true;
        #   };
        # };

        nixosModules = builtins.listToAttrs (map
        (x: {
          name = x;
          value = import (./modules + "/${x}");
        })
        (builtins.attrNames (builtins.readDir ./modules)));

        nixosConfigurations = {
          vm1 = defSystem "x86_64-linux" {
            imports = [
              (import ./machines/vm1/configuration.nix {inherit self;})
            ];
          };
          vm2 = defSystem "x86_64-linux" {
            imports = [
              (import ./machines/vm2/configuration.nix {inherit self;})
            ];
          };

          loki = defSystem "x86_64-linux" {
            imports = [
              (import ./machines/loki/configuration.nix {inherit self;})
            ];
          };

          drone = defSystem "x86_64-linux" {
            imports = [
              (import ./machines/drone/configuration.nix {inherit self;})
            ];
          };

          proxy = defSystem "x86_64-linux" {
            imports = [
              (import ./machines/proxy/configuration.nix {inherit self;})
            ];
          };
        };

        nixosContainers = {
          drone = defContainer "x86_64-linux" {
            imports = [
              (import ./machines/drone/configuration.nix {inherit self;})
            ];
          };

          proxy = defContainer "x86_64-linux" {
            imports = [
              (import ./machines/proxy/configuration.nix {inherit self;})
            ];
          };
        };
      }
      // (flake-utils.lib.eachSystem ["aarch64-linux" "x86_64-linux"])
      (
        system: let
          pkgs = import nixpkgs {
            inherit system;
            overlays = [
              self.overlay
              ha-now-playing.overlays.${system}
              pamedia.overlays.${system}
            ];
            config = {
              allowUnsupportedSystem = true;
              allowUnfree = true;
            };
          };
        in rec {
          packages = flake-utils.lib.flattenTree {
            rofi-wayland = pkgs.rofi-wayland;
            nix-plugins = pkgs.nix-plugins;
            backscrub = pkgs.backscrub;
          };

          apps = {
            rofi-wayland = flake-utils.lib.mkApp {drv = packages.rofi-wayland;};
            nix-plugins = flake-utils.lib.mkApp {drv = packages.nix-plugins;};
            backscrub = flake-utils.lib.mkApp {drv = packages.backscrub;};
          };

          devShell = with pkgs;
            mkShell {
              nativeBuildInputs = [sops ssh-to-pgp];
              packages = [sops];
            };
        }
      );
}