{
  description = "AI Usage Monitor for Hyprland";

  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-26.05";

  outputs = { self, nixpkgs }:
    let
      systems = [ "x86_64-linux" "aarch64-linux" ];
      each = nixpkgs.lib.genAttrs systems;
    in {
      packages = each (system:
        let
          pkgs = import nixpkgs { inherit system; };
        in {
          ai-usage = pkgs.rustPlatform.buildRustPackage {
            pname = "ai-usage";
            version = "0.1.1";
            src = ./.;
            cargoLock.lockFile = ./Cargo.lock;
            meta = {
              description = "Waybar usage monitor for Claude, Codex and Cursor";
              mainProgram = "ai-usage";
            };
          };
          default = self.packages.${system}.ai-usage;
        });

      homeManagerModules.default = ./modules/home-manager.nix;
    };
}