Re: [gentoo-user] Re: Removing KDE 3.5? Or reason to keep it around?

[Dale]

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>> From: Dale<rdalek1967@×××××.com>
>> To: gentoo-user@l.g.o
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>>> On 02/26/2010 06:06 AM, BRM wrote:
>>>
>>>> I am quite happy with KDE4 - presently using KDE 4.3.5. I still have KDE
>>>>
>> 3.5.10 installed, and am wondering how much longer I need to keep it around...I
>> probably use all KDE4 apps, though there might be a few here or there that I use
>> on a rare occasion that are still KDE3 based...may be...and no, I don't plan on
>> using KDE Sunset Overlay[1]
>>
>>>> Any how...I'm wondering what the best method to remove KDE3.5 safely is:
>>>> 1) Just leave it and may be it'll just get removed?
>>>> 2) Found this entry on removing it
>>>>
>> http://linuxized.blogspot.com/2008/10/how-to-unmerge-kde-3-packages-if-their.html
>>
>>>> But nothing registers as a 'dup' even though qlist does show a lot of KDE
>>>>
>> 3.5.10 packages installed. (Yeah, I'd need to modify the line to ensure it
>> doesn't remove KDE 4.3.5).
>>
>>>> 3) Gentoo KDE4 guide suggests a method, but it seems to be more related to
>>>>
>> removing KDE entirely...
>>
>>>> http://www.gentoo.org/proj/en/desktop/kde/kde4-guide.xml
>>>>
>>> If you keep your world file (/var/lib/portage/world) tidy, simply deleting all
>>>
>> lines with KDE3 packages and running emerge -a --depclean will take care of it.
>>
>>> You *do* keep your world file tidy, don't you? :P
>>>
>> That would be the easiest method.  If you use the kde-meta package like I do,
>> just remove the one for KDE 3 and let --depclean do its thing.  It should get
>> all of it.
>>
> I actually don't touch the world file, and just do the 'emerge world -vuDNa' for updates.
> > From my POV, that is emerge/Portage's job - not mine.
>
> Aside from that, I'm not sure I have ever really run "emerge --depclean", but I also
> rarely uninstall anything, but don't install things left or right to try out either, so
> typically upgrades are all I need to do.
>
> Having just done a compiler upgrade, I can say that there are roughly 1100 packages (emerge -eav) in world that were recompiled.
>
> I was just contemplating - KDE4 is stable, and I don't see myself running KDE3 again; so why keep it around.
> If 'emerge world -vuDNa' will remove it when it gets pushed off the main trunk, then that's probably fine with me - since that seems to not be very far out now.
> If not, then I definitely want to remove it now as there is no other reason for keeping it around.
>
>
>> If you want to keep something tho, you need to add it to the world file first
>> and then run --depclean.  That way it will keep the program(s) you want and the
>> things they depend on but remove everything else.  This will save you from
>> having to reinstall those packages.  You may even have to get them from the
>> overlay at that point.  So don't uninstall something you want to keep.
>>
> That's the only issue. My only concern is software (e.g. KDevelop) that may not have been updated to KDE4 yet. (Not a fan of KDevelop3; waiting to see how KDevelop4 is going to shape up.)
>
>
>> If you have the drive space, you can leave it there for a while longer tho.
>> Just keep in mind that there are no security updates or anything like that.  If
>> you add the overlay, you will get a few updates at least.
>>
> I do have the disk space on the systems I have KDE3 and KDE4 on; so that's not a concern.
>
> Ben
>
>

Another reason the question of keeping your world file clean could come 
up, do you use the --oneshot option when needed?  This can really junk 
up a world file.  Let's say kde-meta pulls in konqueror.  For some 
reason, you need to re-emerge konqueror and do so without the --oneshot 
option.  Now, konqueror is listed in the world file when it really 
shouldn't be there.  This can happen with hundreds of other packages as 
well.  I fell for this ages ago myself because I didn't know about 
this.  So, even tho you may not touch the world file, it could still 
have packages listed in there that are not needed.  It sort of creeps up 
on you if you are not careful.  The biggest thing portage does with 
world is add stuff and keep it in alphabetical order.

There are some things that should be done to keep a sane system in my 
opinion.  --depclean is one of them.  Running revdep-rebuild is 
another.  I even go look at my world file from time to time to see if I 
forgot to use the --oneshot option myself.  Gentoo is like anything 
else, it has to be maintained.  The better maintenance you do the better 
things will be.   After all, there will be problems no matter what you 
do but keeping it sane helps.  Your mileage may vary tho.

If you want to keep the Kdevelop 3 around, just add it to world.  
Portage will do this with the -n option if you would rather portage did 
it.  Then you can unmerge kde-meta or whatever you use to install KDE 3 
and run --depclean -p.  I would run with the -p option first since you 
may see something else you want to keep or some other package that you 
need to check on before removing.   The -a option works to.  You can say 
no if it is not what you want just yet.

Dale

:-)  :-)