anchor.diff:      ]);
     in stdenv.mkDerivation rec {
       pname = "webtorrent-desktop";
  -    version = "0.20.0";
  +    version = "0.21.0";
   
       src =
         if stdenv.hostPlatform.system == "x86_64-linux" then
  -        fetchurl {
  -          url = "https://github.com/webtorrent/webtorrent-desktop/releases/download/v0.20.0/webtorrent-desktop_${version}-1_amd64.deb";
  -          sha256 = "1kkrnbimiip5pn2nwpln35bbdda9gc3cgrjwphq4fqasbjf2781k";
  +        fetchzip {
  +          url = "https://github.com/webtorrent/webtorrent-desktop/releases/download/v${version}/WebTorrent-v${version}-linux.zip";
  +          sha256 = "13gd8isq2l10kibsc1bsc15dbgpnwa7nw4cwcamycgx6pfz9a852";
           }
           else
             throw "Webtorrent is not currently supported on ${stdenv.hostPlatform.system}";
  +    desktopFile = fetchurl {
  +      url = "https://raw.githubusercontent.com/webtorrent/webtorrent-desktop/v${version}/static/linux/share/applications/webtorrent-desktop.desktop";
  +      sha256 = "1v16dqbxqds3cqg3xkzxsa5fyd8ssddvjhy9g3i3lz90n47916ca";
  +    };
  +    icon256File = fetchurl {
  +      url = "https://raw.githubusercontent.com/webtorrent/webtorrent-desktop/v${version}/static/linux/share/icons/hicolor/256x256/apps/webtorrent-desktop.png";
  +      sha256 = "1dapxvvp7cx52zhyaby4bxm4rll9xc7x3wk8k0il4g3mc7zzn3yk";
  +    };
  +    icon48File = fetchurl {
  +      url = "https://raw.githubusercontent.com/webtorrent/webtorrent-desktop/v${version}/static/linux/share/icons/hicolor/48x48/apps/webtorrent-desktop.png";
  +      sha256 = "00y96w9shbbrdbf6xcjlahqd08154kkrxmqraik7qshiwcqpw7p4";
  +    };
       phases = [ "unpackPhase" "installPhase" ];
       nativeBuildInputs = [ dpkg ];
  -    unpackPhase = "dpkg-deb -x $src .";
       installPhase = ''
  -      mkdir -p $out
  -      cp -R opt $out
  -
  -      mv ./usr/share $out/share
  -      mv $out/opt/webtorrent-desktop $out/libexec
  -      chmod +x $out/libexec/WebTorrent
  -      rmdir $out/opt
  -
  -      chmod -R g-w $out
  +      mkdir -p $out/share/{applications,icons/hicolor/{48x48,256x256}/apps}
  +      cp -R . $out/libexec
   
         # Patch WebTorrent
         patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
  
positive.code:       mkdir -p $out/bin
        ln -s $out/libexec/WebTorrent $out/bin/WebTorrent
  
        # Fix the desktop link
        substituteInPlace $out/share/applications/webtorrent-desktop.desktop \
          --replace /opt/webtorrent-desktop $out/bin
      '';
  
      meta = with stdenv.lib; {
  
negative.code: {
    alsaLib, atk, cairo, cups, dbus, dpkg, expat, fetchurl, fetchzip, fontconfig, freetype,
    gdk-pixbuf, glib, gnome3, libX11, libXScrnSaver, libXcomposite, libXcursor,
    libXdamage, libXext, libXfixes, libXi, libXrandr, libXrender, libXtst,
    libxcb, nspr, nss, stdenv, udev, libuuid, pango, at-spi2-atk, at-spi2-core
  }:
  
    let
      rpath = stdenv.lib.makeLibraryPath ([
      alsaLib
      atk
      at-spi2-core
      at-spi2-atk
      cairo
      cups
      dbus
  