Bug#633461: gobject-introspection: fails to install with Python 2.7: E: pycompile:234: Requested versions are not installed

[Jakub Wilk]

Package: gobject-introspection
Version: 0.10.8-2
Severity: important
User: debian-python at lists.debian.org
Usertags: python2.7

If I install python 2.7.2-2 from experimental and gobject-introspection, 
the installation fails:
| # apt-get install -y python-minimal/experimental python/experimental gobject-introspection
| Reading package lists... Done
| Building dependency tree
| Reading state information... Done
| Selected version '2.7.2-2' (Debian:experimental [all]) for 'python-minimal'
| Selected version '2.7.2-2' (Debian:experimental [all]) for 'python'
| The following extra packages will be installed:
|   libexpat1 libffi5 libgirepository-1.0-1 libglib2.0-0 libpcre3 libsqlite3-0 libssl1.0.0 mime-support python2.7 python2.7-minimal
| Suggested packages:
|   python-doc python-tk python-profiler python2.7-doc binfmt-support
| Recommended packages:
|   libglib2.0-data shared-mime-info file
| The following NEW packages will be installed:
|   gobject-introspection libexpat1 libffi5 libgirepository-1.0-1 libglib2.0-0 libpcre3 libsqlite3-0 libssl1.0.0 mime-support python python-minimal python2.7
|   python2.7-minimal
| 0 upgraded, 13 newly installed, 0 to remove and 0 not upgraded.
[snip - downloading and unpacking]
| Setting up libffi5 (3.0.9-7) ...
| Setting up libssl1.0.0 (1.0.0d-3) ...
| Setting up libpcre3 (8.12-3) ...
| Setting up libsqlite3-0 (3.7.7-2) ...
| Setting up mime-support (3.51-1) ...
| update-alternatives: using /usr/bin/see to provide /usr/bin/view (view) in auto mode.
| Setting up python2.7-minimal (2.7.2-2) ...
| Linking and byte-compiling packages for runtime python2.7...
| Setting up libexpat1 (2.0.1-7) ...
| Setting up python2.7 (2.7.2-2) ...
| Setting up python-minimal (2.7.2-2) ...
| Setting up python (2.7.2-2) ...
| Setting up libglib2.0-0 (2.28.6-1) ...
| No schema files found: doing nothing.
| Setting up libgirepository-1.0-1 (0.10.8-2) ...
| Setting up gobject-introspection (0.10.8-2) ...
| E: pycompile:234: Requested versions are not installed
| dpkg: error processing gobject-introspection (--configure):
|  subprocess installed post-installation script returned error exit status 3
| Errors were encountered while processing:
|  gobject-introspection
| configured to not write apport reports
|                                       E: Sub-process /usr/bin/dpkg returned an error code (1)

-- 
Jakub Wilk