anchor.diff:      src
       nativeBuildInputs
       buildInputs
  +    cmakeFlags
       disallowedReferences
       stripDebugList
       doCheck
  
positive.code:     };
      gr-network = {
        cmakeEnableFlag = "GR_NETWORK";
      };
    };
    shared = (import ./shared.nix {
  
negative.code:   } // lib.optionalAttrs (hasFeature "gr-qtgui" features) {
      inherit (libsForQt5) qwt;
    };
  
    postInstall = shared.postInstall
      # This is the only python reference worth removing, if needed.
      + lib.optionalString (!hasFeature "python-support" features) ''
        ${removeReferencesTo}/bin/remove-references-to -t ${python} $out/lib/cmake/gnuradio/GnuradioConfig.cmake
        ${removeReferencesTo}/bin/remove-references-to -t ${python} $(readlink -f $out/lib/libgnuradio-runtime.so)
  