[Python-3000] PyGUI in Py3K stdlib, more details

[Michael Chermside]

> [Bill Janssen proposes we use Greg Ewing's PyGUI as the standard GUI
> framework in Py3K.]

I really like PyGUI. I have dabbled in a number of different GUI frameworks
over the years, and PyGUI is the only one where upon reading the
documentation I immediately thought "that's Pythonic!". (It's usually more
like "My GOD that's inelegant!".)

But PyGUI is not complete. (Greg is one of the people who says this.) And
I belive that it is just not ready to be the "blessed" Python GUI framework.
Perhaps after a few years more work it will be... and then I would favor
including it. But not now. By way of illustration, the GUI task I am working
on at the moment is a tree-view in which individual items and entire branches
can be selected by clicking checkboxes -- a challenge to most any framework
I know of. It's not that PyGUI's tree-view component isn't flexible enough,
PyGUI doesn't even *have* a tree view component. Me, I nearly always use
wxPython (which is TERRIBLE to use, but it usually does what I need).

Besides, including PyGUI doesn't need to be part of Py3K because it doesn't
break backward compatibility -- it can be added (if desired) whenever PyGUI
is deemed ready. What needs to be decided for Py3K is whether to DROP
support for TK. I am actually mildly in favor of dropping TK support in
the core if we can make it easy enough to download and install separately.

-- Michael Chermside