As a candidate refugee from KDE4 I have now tried installing 
Trinity on Mageia-2.

But although it was appearing to install well, it stopped part way 
and warned me of a missing file:
-------------------------------------------------------
Installation failed, some files are missing:                            
   
http://ppa.quickbuild.pearsoncomputing.net/trinity/trinity/rpm/mga2/torn
-3.5.13.1-1.mga2.opt.i586.rpm
You may need to update your urpmi database.
-------------------------------------------------

I was then given the option to continue, which I did, but the install 
failed at the end as follows:

-------------------------------------------------
installing trinity-desktop-3.5.13.1-1.mga2.noarch.rpm
trinity-tdepim-3.5.13.1-1.mga2.opt.i586.rpm
trinity-karm-3.5.13.1-1.mga2.opt.i586.rpm
trinity-kmobile-3.5.13.1-1.mga2.opt.i586.rpm
trinity-tdeartwork-emoticons-3.5.13.1-1.mga2.opt.i586.rpm
trinity-tdeartwork-theme-icon-3.5.13.1-1.mga2.opt.i586.rpm
trinity-tdeartwork-3.5.13.1-1.mga2.opt.i586.rpm from
/var/cache/urpmi/rpms
Installation failed:    trinity-korn = 3.5.13.1-1.mga2.opt is needed 
by
trinity-tdepim-3.5.13.1-1.mga2.opt.i586
[root@laptop ~]# 
---------------------------------------------------

So I have 2 questions:

  (1) How do I obtain the missing file?
  (2) How could I then complete installation?

and would much appreciate some help with this, please.
-- 
/\/\aurice  (Retired in Surrey, UK)