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

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

    xivlauncher-rb = {
      url = "github:dawei-nh/xivlauncher-rb-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    cheatengine = {
      url = "github:Hy4ri/cheatengine-flake";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    scopebuddy = {
      url = "github:HikariKnight/ScopeBuddy";
      inputs.nixpkgs.follows = "nixpkgs";
    };

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

    lazyvim = {
      url = "github:pfassina/lazyvim-nix/v16.0.0";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    affinity-nix = {
      url = "github:Meo98/affinity-nix-fork";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nix-flatpak = {
      url = "github:gmodena/nix-flatpak/?ref=latest";
    };

    appimage-manager = {
      url = "github:kem-a/AppManager";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    pi = {
      url = "github:earendil-works/pi/stable";
      inputs.nixpkgs.follows = "nixpkgs";
    };

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

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

    affinity-thumbnailer-kde = {
      url = "path:./packages/affinity-thumbnailer-kde";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    inputs@{
      self,
      nixpkgs,
      nixpkgs-xr,
      nix-darwin,
      nix-flatpak,
      home-manager,
      affinity-nix,
      sops-nix,
      affinity-thumbnailer-kde,
      cheatengine,
      xivlauncher-rb,
      ...
    }:
    let
      home-manager-configuration = { home-manager, ... }: {
        home-manager = {
          useGlobalPkgs = true;
          extraSpecialArgs = { inherit inputs; };
          users.frank = ./home/frank.nix;
        };
      };

      trusted-users-configuration = { nix, config, ... }: {
        nix.settings.trusted-users = [ config.users.users.frank.name ];
      };

      systems = [
        "x86_64-linux"
        "aarch64-darwin"
      ];

      forAllSystems = nixpkgs.lib.genAttrs systems;

      packagesFor =
        system:
        let
          pkgs = nixpkgs.legacyPackages.${system};
        in
        nixpkgs.lib.optionalAttrs pkgs.stdenv.hostPlatform.isLinux {
          heidisql = pkgs.callPackage ./packages/heidisql/package.nix { };
          aseprite-thumbnailer-kde = pkgs.callPackage ./packages/aseprite-thumbnailer-kde/package.nix { };
        };

      formatterFor =
        system:
        let
          pkgs = nixpkgs.legacyPackages.${system};
        in
        pkgs.writeShellApplication {
          name = "nixfmt";
          runtimeInputs = [ pkgs.nixfmt ];
          text = ''
            flags=()
            paths=()
            for arg in "$@"; do
              case "$arg" in
                -*) flags+=("$arg") ;;
                *) paths+=("$arg") ;;
              esac
            done
            if [ "''${#paths[@]}" -eq 0 ]; then
              if git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
                mapfile -t paths < <(git ls-files '*.nix')
              else
                mapfile -t paths < <(find . -name '*.nix' -not -path './.devenv/*')
              fi
            fi
            nixfmt "''${flags[@]}" "''${paths[@]}"
          '';
        };
    in
    {
      packages = forAllSystems packagesFor;

      formatter = forAllSystems formatterFor;
      nixosConfigurations = {
        nero = nixpkgs.lib.nixosSystem {
          specialArgs = { inherit inputs; };

          modules = [
            home-manager.nixosModules.home-manager
            home-manager-configuration
            trusted-users-configuration

            nixpkgs-xr.nixosModules.nixpkgs-xr
            nix-flatpak.nixosModules.nix-flatpak
            affinity-thumbnailer-kde.nixosModules.default
            sops-nix.nixosModules.sops

            ./hosts/nero/hardware.nix
            ./hosts/nero/configuration.nix
          ];
        };

        vergil = nixpkgs.lib.nixosSystem {
          specialArgs = { inherit inputs; };

          modules = [
            home-manager.nixosModules.home-manager
            home-manager-configuration
            trusted-users-configuration

            sops-nix.nixosModules.sops

            ./hosts/vergil/hardware.nix
            ./hosts/vergil/configuration.nix
          ];
        };

        pdw-frankiel = nixpkgs.lib.nixosSystem {
          specialArgs = { inherit inputs; };

          modules = [
            home-manager.nixosModules.home-manager
            home-manager-configuration
            trusted-users-configuration

            nix-flatpak.nixosModules.nix-flatpak
            affinity-thumbnailer-kde.nixosModules.default
            sops-nix.nixosModules.sops

            ./hosts/pdw-frankiel/hardware.nix
            ./hosts/pdw-frankiel/configuration.nix
          ];
        };
      };

      darwinConfigurations = {
        franks-macbook-pro = nix-darwin.lib.darwinSystem {
          specialArgs = {
            inherit inputs;
            inherit self;
          };

          modules = [
            home-manager.darwinModules.home-manager
            home-manager-configuration

            sops-nix.darwinModules.sops

            {
              users.users.frank.home = "/Users/frank";
            }

            ./hosts/franks-macbook-pro/configuration.nix
          ];
        };
      };
    };
}