On 6 December 2011 13:42, Darrell Anderson <humanreadable(a)yahoo.com> wrote:
Just my
observations with Slackware
13.1. YMMV. Please feel free to add, edit, qualify, add a
workaround, etc.
Should we fine tune this information and post to our wiki?
===================================
Whereas the Trinity developers have worked hard to support
KDE 4 compatibility, there are several challenges with
running Trinity, KDE 4, and KDE 3 installed on the same
multiple user system.
1. Many of the apps use the same file name. The scripts in
/etc/profile.d produce conflicting file search paths.
Without the appropriate file search path, the file search
path highest in the path hierarchy will launch the app,
which might not be the correct app.
2. On multiple user systems, the profile.d scripts can’t
be arbitrarily disabled because any of the desktop
environments might be used.
3. The profile.d scripts cause conflicts with XDG paths,
which create the desktop menus. Normally this is not a
problem with other desktops such as Xfce, but that is not
the case with these three desktops because many apps have
the same name. With each profile.d script being sourced,
each desktop system menu will show every app from all other
desktops. The Trinity developers have hacked a neat trick to
tag the KDE 4 apps in the menu, but there is no such support
for KDE 3 apps. The hack does not exist for KDE 4 or KDE 3.
4. User-defined menu changes are stored in
$HOME/.config/menus and $HOME/.local/applications. As those
directories are global to anything the user does, menu
changes in one desktop affects the other desktops if a user
wants to change desktops. That means conflicts with starting
apps.
5. The KDE 3 and Trinity KDM login manager will conflict
unless one or the other is disabled (chmod -x). Neither can
be used to support the other desktops because of the
underlying dependency on each desktop’s respective kdelibs
package.
6. The file search path conflicts will introduce multiple
autostart directories. Apps in those directories will start
for the other desktops too.
A possible work-around to most of these conflicts is to
disable all affected profile.d scripts and then modify the
xinitrc scripts to source the appropriate profile.d scripts.
That might suffice for run level 3, but not run level 4. Run
level 4 would require some detailed scripting in the KDM
Xsession script to look at the user’s dmrc config file and
then source the appropriate profile.d scripts. Yet these
work-around won’t resolve any user-defined menu changes.
On single user systems or systems where all users want to
use the same desktop, all of this can be avoided by
uninstalling the other desktop environments.
===================================
Does anybody have anything to add to these observations?
To confirm?
To dispute?
I will add another item to the list: migrating KMail files from KDE3 to
TDE changes the index files. The change is non-destructive, annoying only,
but KMail complains if a person tries to use KMail in both environments.
Users can run KMail in either but must manually reindex all of the files
each time.
Darrell
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Do we want to bother with making sure KDE3/Trinity can sit on the same PC?
KDE