anchor.diff:      "--enable-pc-files"
       "--enable-symlinks"
     ] ++ lib.optional unicode "--enable-widec"
  -    ++ lib.optional enableStatic "--enable-static"
       ++ lib.optional (!withCxx) "--without-cxx"
       ++ lib.optional (abiVersion == "5") "--with-abi-version=5";
   
  
positive.code:     moveToOutput "bin/infotocap" "$out"
    '';
  
    preFixup = lib.optionalString (!hostPlatform.isCygwin) ''
      rm "$out"/lib/*.a
    '';
  
  
negative.code:         for statictype in a dll.a la; do
            if [ -e "$out/lib/lib''${library}$suffix.$statictype" ]; then
              ln -svf lib''${library}$suffix.$statictype $out/lib/lib$library$newsuffix.$statictype
              if [ "ncurses" = "$library" ]
              then
                # make libtinfo symlinks
                ln -svf lib''${library}$suffix.$statictype $out/lib/libtinfo$newsuffix.$statictype
              fi
            fi
          done
          ln -svf ''${library}$suffix.pc $dev/lib/pkgconfig/$library$newsuffix.pc
  