The following is all with the stock repositories on the N9 as there is no stable Extras or recommended Testing repositories set up yet.

Here's the original problem:

/home/user/MyDocs/debs # dpkg -i pyradio_4.3_all.deb
file /var/lib/dpkg/tmp.ci/digsigsums cannot be opened
No digsigsums file
(Reading database ... 42549 files and directories currently installed.)
Preparing to replace pyradio 4.3 (using pyradio_4.3_all.deb) ...
Package pyradio: File '/var/lib/dpkg/info/pyradio.prerm' not in digsigsums -- warning
Package pyradio: File '/var/lib/dpkg/info/pyradio.postinst' not in digsigsums -- warning
Unpacking replacement pyradio ...
Package pyradio: File '/opt/pyRadio/pyRadio.py' not in digsigsums -- warning
No digsigsums file
dpkg: dependency problems prevent configuration of pyradio:
pyradio depends on pyside-qt4-core; however:
Package pyside-qt4-core is not installed.
pyradio depends on pyside-qt4-gui; however:
Package pyside-qt4-gui is not installed.
pyradio depends on pyside-qt4-webkit; however:
Package pyside-qt4-webkit is not installed.
pyradio depends on python-pyside.qtwebkit; however:
Package python-pyside.qtwebkit is not installed.
dpkg: error processing pyradio (--install):
dependency problems - leaving unconfigured
Processing triggers for desktop-file-utils ...
Processing triggers for hicolor-icon-theme ...
Errors were encountered while processing:
pyradio
aegis-installing pyradio (from '')


The first search comes back with nothing:

/home/user/MyDocs/debs # apt-cache search python-qt4
/home/user/MyDocs/debs #


But then i tried this:

/home/user/MyDocs/debs # apt-cache search pyside
python-qtmobility.feedback - Qt Mobility Feedback module - Python bindings
python-pyside.qtopengl - Qt 4 OpenGL module - Python bindings
python-pyside.qtnetwork - Qt 4 network module - Python bindings
python-qtmobility.organizer - Qt Mobility Organizer module - Python bindings
python-qtmobility.contacts - Qt Mobility Contacts module - Python bindings
python-pyside.qtxml - Qt 4 XML module - Python bindings
python-pyside.qtsvg - Qt 4 SVG module - Python bindings
python-pyside.qtscript - Qt 4 script module - Python bindings
python-qtmobility.gallery - Qt Mobility Gallery module - Python bindings
libpyside1.0 - Python bindings for Qt 4 (base files)
python-qtmobility.serviceframework - Qt Mobility Service Framework module - Python bindings
python-qtmobility.connectivity - Qt Mobility Connectivity module - Python bindings
python-qtmobility.messaging - Qt Mobility Messaging module - Python bindings
python-qtmobility.sensors - Qt Mobility Sensors module - Python bindings
python-qtmobility.location - Qt Mobility Location module - Python bindings
python-pyside.phonon - Qt 4 Phonon module - Python bindings
python-pyside.qtwebkit - Qt 4 WebKit module - Python bindings
python-pyside - Python bindings for Qt4 (big metapackage)
python-pyside.qtgui - Qt 4 GUI module - Python bindings
python-qtmobility.publishsubscribe - Qt Mobility Publish and Subscribe module - Python bindings
python-qtmobility.systeminfo - Qt Mobility SystemInfo module - Python bindings
python-pyside.qtcore - Qt 4 core module - Python bindings
python-pyside.qtsql - Qt 4 SQL module - Python bindings
python-pyside.qtdeclarative - Qt 4 Declarative module - Python bindings
python-qtmobility.versit - Qt Mobility Versit module - Python bindings
python-qtmobility.multimediakit - Qt Mobility MultimediaKit module - Python bindings


Trying to install the Python metapackage python-pyside:

/home/user/MyDocs/debs # apt-get install python-pyside
Reading package lists
Building dependency tree
Reading state information... Done
Building dependency tree
Reading state information... Done
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
pyradio: Depends: pyside-qt4-core but it is not installable
Depends: pyside-qt4-gui but it is not installable
Depends: pyside-qt4-webkit but it is not installable
Depends: python-pyside.qtwebkit but it is not going to be installed
python-pyside: Depends: python-pyside.phonon (>= 1.0.7-1maemo2+0m6) but it is not going to be installed
Depends: python-pyside.qtscript (>= 1.0.7-1maemo2+0m6) but it is not going to be installed
Depends: python-pyside.qtsql (>= 1.0.7-1maemo2+0m6) but it is not going to be installed
Depends: python-pyside.qtsvg (>= 1.0.7-1maemo2+0m6) but it is not going to be installed
Depends: python-pyside.qtwebkit (>= 1.0.7-1maemo2+0m6) but it is not going to be installed
Depends: python-pyside.qtxml (>= 1.0.7-1maemo2+0m6) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).