pkg_chk (and consequently pkg_rolling_replace) confused with PYTHON_VERSION_DEFAULT=33

[Richard PALO <richard.palo%free.fr@localhost>]

Okay, seems pkg_chk is terribly confused when mk.conf contains:

PYTHON_VERSION_DEFAULT= 33

and, for example, python-27 modules are installed (via meta-pkgs/gnome).

> richard@devzone:~/src/pkgsrc$ pkg_chk -u -q
> databases/py-sqlite3 - py33-sqlite3-3.3.2nb2 missing
> sysutils/py-dbus - py33-dbus-1.2.0 missing
> textproc/py-cElementTree - py33-cElementTree-3.3.2 missing
> textproc/py-expat - py33-expat-3.3.2 missing
> textproc/py-libxml2 - py33-libxml2-2.9.1 missing
> Installed: py33-sqlite3-3.3.2nb2 py33-dbus-1.2.0 py33-cElementTree-3.3.2 
> py33-expat-3.3.2 py33-libxml2-2.9.1


> richard@devzone:~/src/pkgsrc$ pkg_info |grep py
> py27-gtksourceview-2.10.1nb17 Python bindings for gtksourceview2
> py27-cElementTree-2.7.5 C implementation of Python ElementTree API
> py27-gnome2-2.28.1nb25 Python binding for GNOME2
> dbus-python-common-1.2.0 Python bindings for the D-BUS message bus system
> python27-2.7.5nb3   Interpreted, interactive, object-oriented programming 
> language
> py27-gnome-menus-2.30.5nb4 Python bindings for gnome-menus
> py27-dbus-1.2.0     Python bindings for the D-BUS message bus system
> py27-gnome2-desktop-2.32.0nb32 Python modules for the GNOME desktop
> py27-gtk2-2.24.0nb16 Python bindings for GTK+2
> py27-xdg-0.19       Python library for XDG
> py27-xcbgen-1.8     XCB protocol descriptions (in XML)
> py27-expat-2.7.5    Python interface to expat
> py27-gdata-2.0.18   Google Data API Python client library
> py27-gstreamer0.10-0.10.22nb4 Python bindings for gstreamer0.10
> py27-libxslt-1.1.28nb1 Python wrapper for libxslt
> py27-at-spi-1.32.0  Assistive Technology Service Provider Interface
> py27-gobject-2.28.6nb11 Python bindings for glib2 gobject
> py27-ORBit-2.24.0nb5 Python bindings for ORBit2
> py27-sqlite3-2.7.5nb2 Built-in sqlite support for Python 2.5 and up
> py-gobject-shared-2.28.6nb10 Python bindings for glib2 gobject
> py27-libxml2-2.9.1  Python wrapper for libxml2
> python33-3.3.2nb2   Interpreted, interactive, object-oriented programming 
> language
> py27-cairo-1.10.0nb1 Python bindings for cairo

Is the only way to update these is temporarily setting 
PYTHON_VERSION_DEFAULT to 27?