anchor.diff:  
     installTargets = [ "install${stdenv.lib.optionalString withLibrary "-full"}" ];
   
  -  meta = {
  +  meta = with stdenv.lib; {
       homepage = "https://invisible-island.net/dialog/dialog.html";
       description = "Display dialog boxes from shell";
  -    license = stdenv.lib.licenses.lgpl21Plus;
  -    maintainers = [ stdenv.lib.maintainers.spacefrogg ];
  -    platforms = stdenv.lib.platforms.all;
  +    license = licenses.lgpl21Plus;
  +    maintainers = with maintainers; [ AndersonTorres spacefrogg ];
  +    platforms = ncurses.meta.platforms;
     };
   }
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "dialog";
    version = "1.3-20190211";
  
    src = fetchurl {
      urls = [
        "ftp://ftp.invisible-island.net/dialog/${pname}-${version}.tgz"
        "https://invisible-mirror.net/archives/dialog/${pname}-${version}.tgz"
      ];
      sha256 = "1lx0bvradzx1zl7znlrsnyljcs596r7wamkhyq37ikbxsy4y5h29";
    };
  
    buildInputs = [ ncurses ];
  
negative.code: { stdenv, fetchurl
  , ncurses
  , withLibrary ? false, libtool
  , unicodeSupport ? true
  , enableShared ? !stdenv.isDarwin
  