I want to start programming but I would like the program could run on any Maemo version, is it possible?

I know programming for QT is only supported for OS2008, after install an early and limited version of QT.

What about tcl/tk? have any dependency of gtk/qt?
Are there any script language/interpreter with graphic functions who works in QT and GTK?

In conclusion I have a Os2008 device and I prefer don't be dependent of any company decision however I understand the nokia movement to QT.