pythonPackages.dnspython_1: add missing file, fixes eval

pkgs/development/python-modules/dnspython/1.nix

@@ -0,0 +1,22 @@
+{ buildPythonPackage, fetchPypi, lib, pythonOlder }:
+
+buildPythonPackage rec {
+  pname = "dnspython";
+  version = "1.16.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    extension = "zip";
+    sha256 = "36c5e8e38d4369a08b6780b7f27d790a292b2b08eea01607865bf0936c558e01";
+  };
+
+  # needs networking for some tests
+  doCheck = false;
+
+  meta = {
+    description = "A DNS toolkit for Python 3.x";
+    homepage = "http://www.dnspython.org";
+    # BSD-like, check http://www.dnspython.org/LICENSE for details
+    license = lib.licenses.free;
+  };
+}