anchor.diff:      python3Packages.pyyaml
       python3Packages.ply
       python3Packages.sphinx
  -    gtest
       graphviz
       doxygen
  +    openssl
     ];
   
     mesonFlags = [ "-Dv4l2=true" "-Dqcam=disabled" ];
  
positive.code:     patchShebangs utils/
    '';
  
    buildInputs = [
      # IPA and signing
      gnutls
      openssl
      boost
  
      # gstreamer integration
  
negative.code: 
      # lttng tracing
      lttng-ust
  
      gtest
    ];
  
    nativeBuildInputs = [
  