How to get Yum back...

>
> Evening all,
>
> I just did the latest batch of F9 PackageKit updates - with disastrous 
> effect!  (See attached list)
>
> I think (!) RPM is still working but Packagekit & yum amongst (many) 
> others have gone.  I've tried to re enable the rpmfusion reps & rpm 
> tells me that the latest ones are installed:
> [root@localhost ~]# su -c 'rpm -Uvh 
> http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm 
> http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm' 
>
> Retrieving 
> http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm 
>
> Retrieving 
> http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm 
>
> Preparing...                
> ########################################### [100%]
>    package rpmfusion-free-release-9-12.noarch (which is newer than 
> rpmfusion-free-release-8-6.noarch) is already installed
>    package rpmfusion-nonfree-release-9-12.noarch (which is newer than 
> rpmfusion-nonfree-release-8-6.noarch) is already installed
> [root@localhost ~]#
>
> Any suggestions as to the best way to recover the packages PK scoffed 
> - especially yum and/or PackageKit?
>
> I did look at trying a 'rescue' or 'install/upgrade' from the install 
> CD, but I'm totally unsure how to go about getting the "missing links" 
> back into my system.
>
> Any help gratefully received! (And this time I promise to change the 
> title of any replies away from the Digest No & date!!!!!!)
>
> Thanks
>
> Dave
> ------------------------------------------------------------------------
>
> Dec 20 17:56:47 localhost yum: Updated: freetype-2.3.5-7.fc9.i386
> Dec 20 17:56:48 localhost yum: Updated: 1:dbus-libs-1.2.4-2.fc9.i386
> Dec 20 17:56:53 localhost yum: Updated: 1:dbus-1.2.4-2.fc9.i386
> Dec 20 17:56:54 localhost yum: Updated: 1:dbus-x11-1.2.4-2.fc9.i386
> Dec 20 17:56:54 localhost yum: Erased: mathml-fonts
> Dec 20 17:56:57 localhost yum: Erased: PackageKit-gstreamer-plugin
> Dec 20 17:57:00 localhost yum: Erased: goffice04
> Dec 20 17:57:07 localhost yum: Erased: abiword
> Dec 20 17:57:21 localhost yum: Erased: PackageKit-udev-helper
> Dec 20 17:57:21 localhost udevd[485]: lookup_group: specified group 'cyberjack' unknown
> Dec 20 17:57:21 localhost yum: Erased: aiksaurus
> Dec 20 17:57:24 localhost yum: Erased: system-config-kickstart
> Dec 20 17:57:39 localhost yum: Erased: anaconda
> Dec 20 17:57:44 localhost yum: Erased: python-iniparse
> Dec 20 17:57:44 localhost yum: Erased: fribidi
> Dec 20 17:57:45 localhost yum: Erased: pinentry
> Dec 20 17:57:46 localhost yum: Erased: preupgrade
> Dec 20 17:57:47 localhost yum: Erased: link-grammar
> Dec 20 17:57:48 localhost yum: Erased: pth
> Dec 20 17:57:50 localhost yum: Erased: yum
> Dec 20 17:57:50 localhost yum: Erased: yum-fastestmirror
> Dec 20 17:57:51 localhost yum: Erased: gpgme
> Dec 20 17:58:52 localhost gconfd (Dave-2204): Exiting
> Dec 20 17:59:58 localhost yum: Erased: gnome-packagekit
> Dec 20 18:00:27 localhost yum: Erased: yum-utils
> Dec 20 18:00:27 localhost yum: Erased: PackageKit-yum
> Dec 20 18:00:30 localhost yum: Erased: system-config-language
> Dec 20 18:00:42 localhost yum: Erased: PackageKit
> Dec 20 18:00:57 localhost yum: Erased: yum-remove-with-leaves
> Dec 20 18:00:59 localhost yum: Erased: gtkmathview
> Dec 20 18:01:03 localhost yum: Erased: wv
> Dec 20 18:01:07 localhost yum: Erased: createrepo
> Dec 20 18:01:08 localhost yum: Erased: anaconda-yum-plugins
> Dec 20 18:01:08 localhost yum: Erased: yum-presto
> Dec 20 18:01:09 localhost yum: Erased: python-sqlite2
> Dec 20 18:01:09 localhost yum: Erased: PackageKit-yum-plugin
> Dec 20 18:01:11 localhost yum: Erased: gnupg2
> Dec 20 18:01:12 localhost yum: Erased: aiksaurus-gtk
> Dec 20 18:01:14 localhost yum: Erased: ots-libs
> Dec 20 18:01:16 localhost yum: Erased: yumex
> Dec 20 18:01:17 localhost yum: Erased: libksba
> Dec 20 18:01:17 localhost yum: Erased: yum-fedorakmod
> Dec 20 18:01:17 localhost yum: Erased: yum-kernel-module
> Dec 20 18:01:18 localhost yum: Erased: loudmouth
> Dec 20 18:01:19 localhost yum: Erased: PackageKit-glib
> Dec 20 18:01:19 localhost yum: Erased: unique
> Dec 20 18:01:21 localhost yum: Erased: dirmngr
> Dec 20 18:01:23 localhost yum: Erased: pygpgme
>   

Good day & a Happy New Year to you all!

As you can see from the quote above, I had some "small" problems with my 
system after I allowed PackageKit to apply a set of updates.  The only 
way out the helpful people on Fedora could suggest was a reinstall of 
Fed 9 (which seems to have worked).

My questions to you:

a) would it be possible to make a "Yum Live CD" to use in cases where 
yum/packagekit & co have disappeared?
b) is it possible to use the original install CD to get yum back?
c) how is it possible for a user to build a dependency list to be able 
to feed rpm when all else has failed???

Thanks

Dave