nixpkgs.overlays = [
    (self: super: {
      flashplayer = super.flashplayer.overrideAttrs (old: rec {
        name = "flashplayer-32.0.0.303";
        version = "32.0.0.303";
        src = fetchurl {
          url = "https://fpdownload.adobe.com/pub/flashplayer/pdc/${version}/flash_player_npapi_linux.x86_64.tar.gz";
          sha256 = "0x0mabgswly2v8z13832pkbjsv404aq61pback6sgmp2lyycdg6w";
        };
      });
    })
  ];