[pygtk] Windows installer components

[Mark Schafer]

  In response to a message by John Stowers in the "Silent installation" 
thread I have started this thread to try to clarify what components 
should be in a windows installer for pygtk.
Please comment and enhance in this thread. I have probably missed 
something...

My suggestion would be that the installer assumes the following are 
installed on the user's machine.
( Which it should inform the user - needs to be installed prior to 
installing pygtk ) :

- Python 2.6.5 (using this release as an example - see below)
- The all-in-one bundle from http://www.gtk.org/download-windows.html
    e.g. 
http://ftp.gnome.org/pub/gnome/binaries/win32/gtk+/2.20/gtk+-bundle_2.20.1-20100912_win32.zip
     which includes GLib, GTK+, Pango, ATK, zlib, cairo, libpng, 
Freetype, Fontconfig, expat
     (I do not know if pygtk also needs any of these which are not in 
the all-in-one bundles)
      - pixman, gettext-runtime, pkg-config, winiconv, proxy-libintl, 
GNU libiconv

So for each version of python that we decided to support (and using 
python 2.6.5 in this example) the pygtk installer needs to install:
- PyGObject
- PyCairo

The installer could be made slightly more robust by checking for the 
existence of these packages already from an earlier install
  - in which case a simple message or an uninstall option might be possible.
The installer also needs to check and add if required the various items 
to the windows PATH variable

The versions of Python to support:
Python 2.6.5
Python 2.7
( my reasoning is that users wishing to use Pygtk at this time are most 
likely to be current. and that Python 2.7 is a precursor to Python 3.0 )
and 32 and 64bit builds so if users have 64 bit builds of GTK+ then 
pygtk will work.

For Python 3.0 - I admit I do not know because John has announced that 
pygtk 2.2 will be the last release in the pygtk series and we should 
move onto PyGObject next.