anchor.diff:      libXtst.out
       libxcb.out
       libnotify.out
  +    libuuid.out
       nspr.out
       nss.out
       pango.out
  
positive.code: let
  
    mirror = https://get.geo.opera.com/pub/opera/desktop;
    version = "53.0.2907.99";
  
    rpath = stdenv.lib.makeLibraryPath [
  
  
negative.code: 
    src = fetchurl {
      url = "${mirror}/${version}/linux/opera-stable_${version}_amd64.deb";
      sha256 = "1mf4lpb66w63kafjni5caq9k3lmsqd85161q29z5lr1s2cx9qqm8";
    };
  
    unpackCmd = "${dpkg}/bin/dpkg-deb -x $curSrc .";
  