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Can this version of QT4 be successfully be installed on Lucid. So many things I try to install depend on this.

Error: Dependency is not satisfiable: libqtcore4 (>= 4:4.7.0~beta1)

Calibre PPA-Lucid is showing 4:4.7.0-0ubuntu4~ppa2, but notes:

PACKAGE BUILD FAILURES (STATUS): -Calibre: It's a problem with qt4, I think, I'm trying a build on my main PPA. Which, if successful, will be copied to this repo.

I've also seen backports available for kubuntu of beta1 and beta2 but I'm running xubuntu and I really don't understand backports anyway.

Change Log
Version: *DELETED*  2011-07-24 05:30:54 UTC 
 No changelog for deleted or moved packages. 


Version: 4:4.7.0~beta2-0ubuntu1~lucid1~ppa1     2010-07-11 12:26:25 UTC 

 qt4-x11 (4:4.7.0~beta2-0ubuntu1~lucid1~ppa1) lucid; urgency=low 
 . 
   * Lucid backport 
Source diff to previous version


Version: 4:4.7.0~beta1+git20100522-0ubuntu1~lucid1~ppa1     2010-06-10 00:24:09 UTC 

 qt4-x11 (4:4.7.0~beta1+git20100522-0ubuntu1~lucid1~ppa1) lucid; urgency=low 
 . 
   * Lucid backport

Is this a lost cause?

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1 Answer 1

up vote 1 down vote accepted

Backports are

https://help.ubuntu.com/community/UbuntuBackports

Kubuntu Backports

https://launchpad.net/~kubuntu-ppa/+archive/backports:

PPA description

Backports of new versions of KDE and major KDE apps for Kubuntu which are either too large a change or not yet tested enough to go to Ubuntu Backports.

There is available for the Lucid: qt4-x11 (4:4.7.0-0ubuntu2~lucid1~ppa2).

Upgrading from a PPA

I'm running xubuntu and I really don't understand backports anyway.

You could go to the Kubuntu Backports and click the "Read about installing": https://launchpad.net/+help-soyuz/ppa-sources-list.html. Upgrade will only upgrade the installed packages (Qt).

Downgrade from the PPA

A package:

:~$ apt-cache show ppa-purge

Description: disables a PPA and reverts to official packages

This program disables a PPA from your Software Sources and reverts your system back to the official Ubuntu packages. You can use this to return your system to normal after testing a new version from a PPA.

Homepage: https://launchpad.net/ppa-purge

It is available from the lucid-backports: http://packages.ubuntu.com/search?keywords=ppa-purge&searchon=names&suite=all&section=all

More:

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Thank you for the very informative reply. I've added the kubuntu ppa as sugested and upon updating I saw all the qt4 updates ready to be installed but they were grayed out and I was offered an option to do a "Partial Upgrade". After some digging I ran sudo apt-get --dry-run dist-upgrade to find only 1 package to be removed. libqt4-multimedia How do I determine what will be affected from this removal. Please advise if this should be a new question. –  akovia Jan 24 '12 at 17:36
    
It seems that there was changes from the Qt 4.6 to the 4.7. One was the QtMultimedia was replaced by QtMobilities, QtMultimediaKit (by ubuntuforums.org/showthread.php?t=1593806 ). After the Lucid the Ubuntu has libqtmultimediakit1 with the Qt 4.7-4.8. If you upgrade to the Qt 4.7 some applications may stop to work - they need the developer attention (new version) to work with the Qt 4.7 or later. Applications that are needing the libqt4-multimedia should have it as a dependency. You should see this with the dry-run/simulation. They will be marked to be removed. –  user26687 Jan 24 '12 at 18:34
    
Thank You! Your answers were more than I had hoped for. –  akovia Jan 24 '12 at 19:23

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