pythonPackages: rename dns -> dnspython

pkgs/development/python-modules/FormEncode/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, dns, pycountry, nose }:
+{ stdenv, buildPythonPackage, fetchPypi, dnspython, pycountry, nose }:
 
 buildPythonPackage rec {
   pname = "FormEncode";
@@ -10,7 +10,7 @@ buildPythonPackage rec {
     sha256 = "1xm77h2mds2prlaz0z4nzkx13g61rx5c2v3vpgjq9d5ij8bzb8md";
   };
 
-  buildInputs = [ dns pycountry nose ];
+  buildInputs = [ dnspython pycountry nose ];
 
   patchPhase = ''
     # dnspython3 has been superseded, see its PyPI page

pkgs/development/python-modules/dkimpy/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, openssl, makeWrapper, buildPythonApplication
-, pytest, dns }:
+, pytest, dnspython }:
 
 buildPythonApplication rec {
   name = "${pname}-${version}";
@@ -14,7 +14,7 @@ buildPythonApplication rec {
   };
 
   buildInputs = [ pytest ];
-  propagatedBuildInputs =  [ openssl dns ];
+  propagatedBuildInputs =  [ openssl dnspython ];
 
   patchPhase = ''
     substituteInPlace dknewkey.py --replace \

pkgs/development/python-modules/email-validator/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, lib, buildPythonPackage, fetchPypi, isPy3k, dns, idna, ipaddress }:
+{ stdenv, lib, buildPythonPackage, fetchPypi, isPy3k, dnspython, idna, ipaddress }:
 
 buildPythonPackage rec {
   pname = "email_validator";
@@ -13,7 +13,7 @@ buildPythonPackage rec {
   doCheck = false;
 
   propagatedBuildInputs = [
-    dns
+    dnspython
     idna
   ] ++ (if isPy3k then [ ] else [ ipaddress ]);