same here.

2002-08-18  James Henstridge  <james@daa.com.au>

    * gtk/Makefile.am: same here.

    * Makefile.am: install in a gtk-2.0 subdir of site-packages.

    * pygtk.py: new file to help with pygtk version parallel install.

pygtk.py

@@ -0,0 +1,57 @@
+# -*- Mode: Python; py-indent-offset: 4 -*-
+# pygtk - Python bindings for the GTK+ widget set.
+# Copyright (C) 1998-2002  James Henstridge
+#
+#   pygtk.py: pygtk version selection code.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+# USA
+
+import sys, os, re
+
+__all__ = ['require']
+
+_pygtk_dir_pat = re.compile(r'^gtk-([\d]+[\d\.]+)$')
+
+def _get_available_versions():
+    versions = {}
+    for dir in sys.path:
+        if not dir: dir = os.getcwd()
+        if _pygtk_dir_pat.match(os.path.basename(dir)):
+            continue  # if the dir is a pygtk dir, skip it
+        for filename in os.listdir(dir):
+            pathname = os.path.join(dir, filename)
+            if not os.path.isdir(pathname):
+                continue  # skip non directories
+            match = _pygtk_dir_pat.match(filename)
+            if match and not versions.has_key(match.group(1)):
+                versions[match.group(1)] = pathname
+    return versions
+
+def require(version):
+    assert not sys.modules.has_key('gtk'), \
+           "pygtk.require() must be called before importing gtk"
+
+    versions = _get_available_versions()
+    assert versions.has_key(version), \
+           "required version '%s' not found on system" % version
+
+    # remove any pygtk dirs first ...
+    for dir in sys.path:
+        if _pygtk_dir_pat.match(os.path.basename(dir)):
+            sys.path.remove(dir)
+
+    # prepend the pygtk path ...
+    sys.path.insert(0, versions[version])