anchor.diff:  
       eval makeWrapper "${browserBinary}" "$out/bin/chromium" \
         --add-flags ${escapeShellArg (escapeShellArg commandLineArgs)} \
  -      ${optionalVaapiFlags} \
  +      ${lib.optionalString enableVaapi "--add-flags --enable-accelerated-video-decode"} \
         ${concatMapStringsSep " " getWrapperFlags chromium.plugins.enabled}
   
       ed -v -s "$out/bin/chromium" << EOF
  
positive.code: , proprietaryCodecs ? true
  , enablePepperFlash ? false
  , enableWideVine ? false
  , useVaapi ? false # Deprecated, use enableVaapi instead!
  , enableVaapi ? false # Disabled by default due to unofficial support
  , useOzone ? false
  , cupsSupport ? true
  
negative.code:       ''
      else browser;
  
  in stdenv.mkDerivation {
    name = "chromium${suffix}-${version}";
    inherit version;
  