umu-launcher: use steam.buildRuntimeEnv

{

  buildFHSEnv,

  lib,

  steam,

  umu-launcher-unwrapped,

  extraLibraries ? pkgs: [ ],

  extraProfile ? "", # string to append to shell profile

  extraEnv ? { }, # Environment variables to include in shell profile

  withMultiArch ? true, # Many Wine games need 32-bit libraries.

}:

let

  # Steam is not a dependency, but we re-use some of its implementation

  steam' = steam.override {

    inherit extraEnv extraProfile;

  };

in

buildFHSEnv {

steam.buildRuntimeEnv {

  pname = "umu-launcher";

  inherit (umu-launcher-unwrapped) version meta;

  targetPkgs =

    pkgs:

    [

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

      umu-launcher-unwrapped

    ]

    ++ extraPkgs pkgs;

  multiPkgs = extraLibraries;

  multiArch = withMultiArch;

  extraPkgs = pkgs: [ umu-launcher-unwrapped ] ++ extraPkgs pkgs;

  inherit

    extraLibraries

    extraProfile

    extraEnv

    ;

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

  runScript = lib.getExe umu-launcher-unwrapped;

    ln -s ${umu-launcher-unwrapped}/lib $out/lib

    ln -s ${umu-launcher-unwrapped}/share $out/share

  '';

  # For umu & proton, we need roughly the same environment as Steam.

  # For simplicity, we use Steam's `profile` implementation.

  # See https://github.com/NixOS/nixpkgs/pull/381047

  # And https://github.com/NixOS/nixpkgs/issues/297662#issuecomment-2647656699

  inherit (steam'.args) profile;

}