why no python, tcl, tk metapackage?

[Dan Jacobson <jidanni@jidanni.org>]

I see my sid system has collected various python 2.1 and 2.2 packages, but
no 2.3 packages.  Couldn't there be a python metapackage that I could
install to always keep python at its freshest, also saving disk space
by disposing older versions?

In particular, after purging 2.1 et. al. by hand, I have all these:
$ COLUMNS=888 dpkg -l|awk '/python2.2/{print $2}'|xargs
idle-python2.2 python2.2 python2.2-dev python2.2-doc
python2.2-egenix-mxdatetime python2.2-egenix-mxtools
python2.2-examples python2.2-extclass python2.2-gadfly python2.2-gdbm
python2.2-imaging python2.2-imaging-sane python2.2-imaging-tk
python2.2-ldap python2.2-mpz python2.2-numeric python2.2-optik
python2.2-tk python2.2-xml python2.2-xmlbase

I suppose I can only pipe this list to sed 's/2.2/2.3/g'|xargs apt-get install,
there being no better way to upgrade them?

Wait, tcl seems to be in the same state, both 8.3 and 8.4 installed,
whats worse, many packages e.g. depend on tcl8.3 (>= 8.3.0), and not
tcl (>= 8.3.0).  But a developer couldn't specify the latter because the
version number is hardwired into the only available package's name.