umu-launcher: add `extraLibraries` and `extraPkgs` args

  buildFHSEnv,

  lib,

  umu-launcher-unwrapped,

  extraPkgs ? pkgs: [ ],

  extraLibraries ? pkgs: [ ],

}:

buildFHSEnv {

  pname = "umu-launcher";

  inherit (umu-launcher-unwrapped) version meta;

  # Use umu-launcher-unwrapped from the package args, to simplify overriding

  targetPkgs = _: [ umu-launcher-unwrapped ];

  targetPkgs =

    pkgs:

    [

      # Use umu-launcher-unwrapped from the package args, to support overriding

      umu-launcher-unwrapped

    ]

    ++ extraPkgs pkgs;

  multiPkgs = extraLibraries;

  executableName = umu-launcher-unwrapped.meta.mainProgram;

  runScript = lib.getExe umu-launcher-unwrapped;