{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-22.11";
    unstable.url = "github:nixos/nixpkgs";

    home-manager = {
      url = "github:nix-community/home-manager/release-22.11";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nur.url = "github:nix-community/NUR";
    impermanence.url = "github:nix-community/impermanence";
    hm-isolation.url = "/home/ale/hm-isolation";
  };

  outputs =
    { self, nixpkgs, unstable, home-manager, nur, impermanence, hm-isolation, ... }:
    let
      system = "x86_64-linux";

      pkgs = pkgsNoLocal.extend self.overlays.default;
      pkgsNoLocal = importPkgs nixpkgs;

      importPkgs = flake: import flake {
        inherit system;

        config = import ./pkgs/config nixpkgs.lib;
        overlays = [ nur.overlay ];
      };

      util = import ./util;
      inherit (util pkgs.lib) importAll;

      local = import ./pkgs;
    in
    with pkgs.lib; {
      formatter.${system} = pkgs.nixpkgs-fmt;
      packages.${system} = local pkgs pkgsNoLocal;

      overlays.default = final: prev: {
        local = local final prev;
        unstable = (importPkgs unstable).extend self.overlays.default;
      };

      nixosConfigurations =
        let
          hostConfig = host: (makeOverridable nixpkgs.lib.nixosSystem) {
            inherit pkgs system;

            modules = [
              ./sys
              host
              nixpkgs.nixosModules.notDetected
              impermanence.nixosModule
            ];
          };
        in
        mapAttrs (_: hostConfig) (importAll { root = ./sys/platform; });

      homeConfigurations =
        let
          registry = { ... }: {
            config.nix.registry = {
              "nixpkgs".flake = nixpkgs;
              "unstable".flake = unstable;
              "nur".flake = nur;
            };
          };

          home = platform: home-manager.lib.homeManagerConfiguration {
            inherit pkgs;

            modules = [
              ./home
              platform
              registry
              hm-isolation.homeManagerModule
            ];
          };

          platformHome = platform:
            let
              value = home platform;
            in
            {
              inherit value;
              name = "${value.config.home.username}@${value.config.local.hostname}";
            };
        in
        mapAttrs' (_: platformHome) (importAll { root = ./home/platform; });
    };
}