darwin purity: python-2.7

pkgs/development/interpreters/python/2.7/default.nix

@@ -8,6 +8,8 @@
 , tcl ? null, tk ? null, x11 ? null, libX11 ? null, x11Support ? !stdenv.isCygwin
 , zlib ? null, zlibSupport ? true
 , expat, libffi
+
+, CF, configd
 }:
 
 assert zlibSupport -> zlib != null;
@@ -92,7 +94,8 @@ let
         [ db gdbm ncurses sqlite readline
         ] ++ optionals x11Support [ tcl tk x11 libX11 ]
     )
-    ++ optional zlibSupport zlib;
+    ++ optional zlibSupport zlib
+    ++ optionals stdenv.isDarwin [ CF configd ];
 
   # Build the basic Python interpreter without modules that have
   # external dependencies.

pkgs/top-level/all-packages.nix

@@ -4910,6 +4910,7 @@ let
   };
   python27 = callPackage ../development/interpreters/python/2.7 {
     self = python27;
+    inherit (darwin) CF configd;
   };
   python32 = callPackage ../development/interpreters/python/3.2 {
     self = python32;