anchor.diff:      ./fix-cmake.patch
     ];
   
  -  outputs = [ "out" "dev" ];
  +  cmakeFlags = [
  +    "-DEXIV2_BUILD_PO=ON"
  +    "-DEXIV2_BUILD_DOC=ON"
  +  ];
  +
  +  outputs = [ "out" "dev" "doc" "man" ];
   
     nativeBuildInputs = [
       cmake
  +    doxygen
       gettext
  +    graphviz
  +    libxslt
     ];
   
     propagatedBuildInputs = [
  
positive.code:     libxml2.bin
      python3
      which
    ];
  
    doCheck = stdenv.isLinux;
  
negative.code: , libxml2
  , python3
  , gettext
  , doxygen
  , graphviz
  , libxslt
  }:
  
  stdenv.mkDerivation rec {
  