{inputs, ...}: {
  # This one brings our custom packages from the 'pkgs' directory
  additions = final: _prev: import ../pkgs {pkgs = final;};

  # This one contains whatever you want to overlay
  # You can change versions, add patches, set compilation flags, anything really.
  # https://nixos.wiki/wiki/Overlays
  modifications = final: prev: {
    n8n = import ./mods/n8n.nix {inherit prev;};
    ffmpeg = inputs.nixpkgs-stable.legacyPackages.${prev.system}.ffmpeg;
  };

  stable-packages = final: _prev: {
    stable = import inputs.nixpkgs-stable {
      system = final.system;
      config.allowUnfree = true;
    };
  };

  pinned-packages = final: _prev: {
    pinned = import inputs.nixpkgs-a63367c {
      system = final.system;
      config.allowUnfree = true;
    };
  };

  master-packages = final: _prev: {
    master = import inputs.nixpkgs-master {
      system = final.system;
      config.allowUnfree = true;
    };
  };
}