anchor.diff:      perl
       python3
       texinfo
  +    validatePkgConfig
     ];
   
     buildInputs = [
  
positive.code: , perl
  , python3
  , texinfo
  , which
  , writeShellScript
  }:
  
negative.code:     runHook postInstall
    '';
  
    preFixup = ''
      echo "Fixing pkg-config files"
      sed -i "s|prefix=.*|prefix=$out/sgxsdk|g" $out/sgxsdk/pkgconfig/*.pc
    '';
  
    doInstallCheck = true;
    installCheckInputs = [ which ];
    installCheckPhase = ''
  