umu-launcher: use steam's FHS profile (#381047)

{

  buildFHSEnv,

  lib,

  steam,

  umu-launcher-unwrapped,

  extraPkgs ? pkgs: [ ],

  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 {

  pname = "umu-launcher";

  inherit (umu-launcher-unwrapped) version meta;

    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;

}