{
  den,
  modules,
  inputs,
  lib,
  stdenv,
  ...
}:
{
  flake-file.inputs = {
    heliumFlake = {
      url = "github:vikingnope/helium-browser-nix-flake";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };
  modules.helium = settings: {
    homeManager =
      { pkgs, ... }:
      let
        heliumPkg = inputs.heliumFlake.packages.${pkgs.stdenv.hostPlatform.system}.helium;
        # The upstream `helium` launcher is a plain Nix wrapper that ignores any
        # *-flags.conf file (that convention is Arch-specific, not NixOS). So to
        # actually pass command-line flags we re-wrap the launcher here.
        #
        # Flag names verified against this Helium build's binary strings.
        # - AcceleratedVideoDecodeLinuxGL / ...ZeroCopyGL: the VA-API GL decode
        #   path (renamed from the old Vaapi* names, which are no-ops here).
        # - VaapiOnNvidiaGPUs: required. Chromium disables VA-API on NVIDIA by
        #   default and hard-skips the nvidia-drm device ("Should skip nVidia
        #   device named: nvidia-drm" in the logs); this re-enables it, routing
        #   decode to NVDEC through the nvidia-vaapi-driver bridge.
        # - VaapiIgnoreDriverChecks: bypass the driver allowlist.
        # HEVC decode itself needs no runtime flag in this build (enable_platform_hevc
        # is compiled in and on by default). Wayland-only: the NVIDIA VA-API path
        # is broken under X11. Upstream considers nvidia-vaapi-driver unsupported,
        # so confirm via chrome://media-internals (decoder should read VaapiVideoDecoder).
        helium = pkgs.symlinkJoin {
          name = "helium-wrapped";
          paths = [ heliumPkg ];
          nativeBuildInputs = [ pkgs.makeWrapper ];
          postBuild = ''
            wrapProgram $out/bin/helium \
              --prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath [ pkgs.vulkan-loader ]}" \
              --add-flags "--enable-features=AcceleratedVideoDecodeLinuxGL,AcceleratedVideoDecodeLinuxZeroCopyGL,VaapiOnNvidiaGPUs,VaapiIgnoreDriverChecks" \
              --add-flags "--ignore-gpu-blocklist" \
              --add-flags "--disable-gpu-sandbox"
          '';
        };
      in
      {
        home.packages = [ helium ];
        nixpkgs.config.allowUnfree = true;
        # Gives me widevine support. yay
        xdg.configFile."net.imput.helium/WidevineCdm/latest-component-updated-widevine-cdm" = {
          text = ''{"Path":"${pkgs.widevine-cdm}/share/google/chrome/WidevineCdm"}'';
        };
        wayland.windowManager.hyprland.settings = lib.mkIf settings.default {
          binds = [
            "$mainMod, E, exec, helium"
          ];
        };
      };
  };
}