qrencode: merge with libqrencode

pkgs/development/libraries/qrencode/default.nix

@@ -0,0 +1,33 @@
+{ stdenv, fetchurl, pkgconfig, SDL2, libpng }:
+
+stdenv.mkDerivation rec {
+  pname = "qrencode";
+  version = "4.0.2";
+
+  outputs = [ "bin" "out" "man" "dev" ];
+
+  src = fetchurl {
+    url = "https://fukuchi.org/works/qrencode/qrencode-${version}.tar.gz";
+    sha256 = "079v3a15ydpr67zdi3xbgvic8n2kxvi0m32dyz8jaik10yffgayv";
+  };
+
+  nativeBuildInputs = [ pkgconfig ];
+  buildInputs = [ SDL2 libpng ];
+
+  doCheck = true;
+
+  meta = with stdenv.lib; {
+    homepage = https://fukuchi.org/works/qrencode/;
+    description = "C library for encoding data in a QR Code symbol";
+
+    longDescription = ''
+      Libqrencode is a C library for encoding data in a QR Code symbol,
+      a kind of 2D symbology that can be scanned by handy terminals
+      such as a mobile phone with CCD.
+    '';
+
+    license = licenses.lgpl21Plus;
+    maintainers = with maintainers; [ adolfogc yegortimoshenko ];
+    platforms = platforms.all;
+  };
+}