anchor.diff:        ln -s ${stdenv.cc}/bin/clang              third_party/llvm-build/Release+Asserts/bin/clang
         ln -s ${stdenv.cc}/bin/clang++            third_party/llvm-build/Release+Asserts/bin/clang++
         ln -s ${llvmPackages.llvm}/bin/llvm-ar    third_party/llvm-build/Release+Asserts/bin/llvm-ar
  +    '' + optionalString (versionAtLeast version "84") ''
  +      substituteInPlace ui/gfx/x/BUILD.gn \
  +        --replace \
  +          '/usr/share/xcb' \
  +          '${xorg.xcbproto}/share/xcb/'
       '';
   
       gnFlags = mkGnFlags (optionalAttrs (versionRange "0" "84") {
  
positive.code:       ninja which python2Packages.python perl pkgconfig
        python2Packages.ply python2Packages.jinja2 nodejs
        gnutar
      ] ++ optional (versionAtLeast version "83") python2Packages.setuptools;
  
      buildInputs = defaultDependencies ++ [
        nspr nss systemd
  
negative.code: , bison, gperf
  , glib, gtk3, dbus-glib
  , glibc
  , xorg
  , libXScrnSaver, libXcursor, libXtst, libGLU, libGL
  , protobuf, speechd, libXdamage, cups
  , ffmpeg, libxslt, libxml2, at-spi2-core
  