{ stdenv, fetchurl, gettext, pkgconfig, perl
, libidn2, zlib, pcre, libuuid, libiconv
, IOSocketSSL, LWP, python3
, libpsl ? null
, openssl ? null }:

stdenv.mkDerivation rec {
  name = "wget-1.19.1";

  src = fetchurl {
    url = "mirror://gnu/wget/${name}.tar.xz";
    sha256 = "1ljcfhbkdsd0zjfm520rbl1ai62fc34i7c45sfj244l8f6b0p58c";
  };

  patches = [ ./remove-runtime-dep-on-openssl-headers.patch ];

  preConfigure = ''
    patchShebangs doc

  '' + stdenv.lib.optionalString doCheck ''
    # Work around lack of DNS resolution in chroots.
    for i in "tests/"*.pm "tests/"*.px
    do
      sed -i "$i" -e's/localhost/127.0.0.1/g'
    done
  '' + stdenv.lib.optionalString stdenv.isDarwin ''
    export LIBS="-liconv -lintl"
  '';

  nativeBuildInputs = [ gettext pkgconfig perl ];
  buildInputs = [ libidn2 libiconv zlib pcre libuuid ]
    ++ stdenv.lib.optionals doCheck [ IOSocketSSL LWP python3 ]
    ++ stdenv.lib.optional (openssl != null) openssl
    ++ stdenv.lib.optional (libpsl != null) libpsl
    ++ stdenv.lib.optional stdenv.isDarwin perl;

  configureFlags =
    if openssl != null then "--with-ssl=openssl" else "--without-ssl";

  doCheck = false;

  meta = with stdenv.lib; {
    description = "Tool for retrieving files using HTTP, HTTPS, and FTP";

    longDescription =
      '' GNU Wget is a free software package for retrieving files using HTTP,
         HTTPS and FTP, the most widely-used Internet protocols.  It is a
         non-interactive commandline tool, so it may easily be called from
         scripts, cron jobs, terminals without X-Windows support, etc.
      '';

    license = licenses.gpl3Plus;

    homepage = http://www.gnu.org/software/wget/;

    maintainers = with maintainers; [ fpletz ];
    platforms = platforms.all;
  };
}