{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
    nixpkgs-old-stable.url = "github:nixos/nixpkgs/nixos-25.05";

    synix.url = "git+https://git.sid.ovh/sid/synix.git?ref=release-25.11";
    synix.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs =
    {
      self,
      nixpkgs,
      ...
    }@inputs:
    let
      inherit (self) outputs;

      systems = [
        "x86_64-linux"
      ];

      lib = nixpkgs.lib.extend (_final: _prev: inputs.synix.lib or { });

      inherit (lib.helpers) mkPkgs;

      forAllSystems =
        function:
        lib.genAttrs systems (
          system:
          function (mkPkgs {
            inherit system;
          })
        );

      mkNixosConfiguration =
        system: modules:
        nixpkgs.lib.nixosSystem {
          inherit system modules;
          specialArgs = {
            inherit inputs outputs lib;
          };
        };
    in
    {
      packages = forAllSystems (pkgs: import ./pkgs { inherit pkgs; });

      overlays = import ./overlays { inherit inputs; };

      nixosModules = import ./modules/nixos;
      homeModules = import ./modules/home;

      devShells = forAllSystems (
        pkgs:
        let
          inherit (pkgs.stdenv.hostPlatform) system;
        in
        {
          default = inputs.synix.devShells.${system}.nix-config;
        }
      );

      nixosConfigurations = {
        HOSTNAME = mkNixosConfiguration "x86_64-linux" [ ./hosts/HOSTNAME ];
      };

      checks = forAllSystems (
        pkgs:
        let
          inherit (pkgs.stdenv.hostPlatform) system;
        in
        {
          inherit (inputs.synix.checks.${system}) pre-commit-check build-additions build-modifications;
        }
      );

      inherit (inputs.synix) formatter;
    };
}