python{27,39,310,311,312,313,314}: use a bootstrap SDK on Darwin

Not sure why this is necessary now, since it should already be handled
as part of the bootstrap. This might not be the right fix but it does
fix eval.

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

@@ -180,7 +180,7 @@ let
     darwin.apple_sdk.frameworks.Cocoa
   ] ++ optionals stdenv.hostPlatform.isDarwin [
     # Work around for ld64 crashes on x86_64-darwin. Remove once 11.0 becomes the default.
-    apple-sdk_11
+    (apple-sdk_11.override { enableBootstrap = true; })
   ] ++ optionals stdenv.hostPlatform.isMinGW [
     windows.dlfcn
     windows.mingw_w64_pthreads