{
  description = "Zen Browser";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
  };

  outputs = { self, nixpkgs }:
    let
      system = "x86_64-linux";
      version = "1.0.0-a.26";
      downloadUrl = "https://github.com/zen-browser/desktop/releases/download/${version}/zen.linux-specific.tar.bz2";
      pkgs = import nixpkgs {
        inherit system;
      };

      runtimeLibs = with pkgs; [
        libGL stdenv.cc.cc fontconfig libxkbcommon zlib freetype
        gtk3 libxml2 dbus xcb-util-cursor alsa-lib pango atk cairo gdk-pixbuf glib
      ] ++ (with pkgs.xorg; [
        libxcb libX11 libXcursor libXrandr libXi libXext libXcomposite libXdamage libXfixes
      ]);
    in
    {
      packages.${system}.default = pkgs.stdenv.mkDerivation {
        name = "zen-browser";

	src = builtins.fetchTarball {
		  url = downloadUrl;
		  sha256 = "sha256:1z81dg3xgfpkyj501gflx8lw7d8124iqwm27zqfja2b47zf4ai2x";
		};
	
	desktopSrc = ./.;

	phases = [ "installPhase" "fixupPhase" ];

	nativeBuildInputs = [ pkgs.makeWrapper pkgs.copyDesktopItems ] ;

	installPhase = ''
	  mkdir -p $out/bin && cp -r $src/* $out/bin
	  mkdir -p $out/share/applications
	  install -D $desktopSrc/zen.desktop $out/share/applications/dev.zen.Zen.desktop
	'';

	fixupPhase = ''
	  chmod 755 $out/bin/*
          patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/bin/zen
          wrapProgram $out/bin/zen --set LD_LIBRARY_PATH "${pkgs.lib.makeLibraryPath runtimeLibs}"
          patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/bin/zen-bin
          wrapProgram $out/bin/zen-bin --set LD_LIBRARY_PATH "${pkgs.lib.makeLibraryPath runtimeLibs}"
          patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/bin/glxtest
          wrapProgram $out/bin/glxtest --set LD_LIBRARY_PATH "${pkgs.lib.makeLibraryPath runtimeLibs}"
          patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/bin/updater
          wrapProgram $out/bin/updater --set LD_LIBRARY_PATH "${pkgs.lib.makeLibraryPath runtimeLibs}"
          patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/bin/vaapitest
          wrapProgram $out/bin/vaapitest --set LD_LIBRARY_PATH "${pkgs.lib.makeLibraryPath runtimeLibs}"
        '';
      };
    };
}