HOWTO Update KDE without downloading full sources
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K Desktop Environment |
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Location: HOWTO Update KDE without downloading full sources |
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This HOWTO does not work between two successive major versions of KDE - for ex., 3.2 to 3.3.
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[edit] Future Zone
Since KDE 3.4, split ebuilds support a global USE flag called kdexdeltas. Enable the kdexdeltas useflag and the ebuilds will download and use the necessary xdeltas automatically. The only difference compared to the instructions below is that you won't get the newest-version tarballs in your $DISTDIR; emerge will store the old tarballs and the xdeltas, and run xdelta in src_unpack.
[edit] Requirements
- Original KDE sources
- xdelta
This HOWTO is especially useful for dial-up users who can't download full sources that are pretty big.
[edit] Background
If you aren't bothered about how things work, skip this section and head directly to Installation.
The basis of this HOWTO lies in delta patches that KDE releases for each version. Deltas encode the differences between two versions of a document. A delta is very similar to a patch. But deltas are compressed to save space.
For more info about deltas, head to the delta website.
So, what we'll do is download the delta packages for kde and merge them with existing sources, thereby getting new versions without the hassle of huge file downloads.
[edit] Installation
Firstly, we'll need the dev-util/xdelta package. So let's emerge it:
# emerge xdelta
Next, you'll need the script that will automate the whole process. Download the script from here and save it as kdedelta.sh.
Now you'll have to do some editing to tell the script the existing and new versions of Arts and KDE. Edit kdedelta.sh in your favorite text editor and make the following changes:
- KDE_NEW and KDE_OLD. For ex, my variables read as:
| File: kdedelta.sh |
KDE_OLD="3.3.1" KDE_NEW="3.3.2" |
- ARTS_OLD and ARTS_New. For ex, my variables read as:
| File: kdedelta.sh |
ARTS_OLD="1.2.2" ARTS_NEW="1.2.3" |
Make sure you that the versions are successive minor versions. KDE does not release a patch for 3.4 from 3.2 or 3.3.0 to 3.3.2.
Now, you might want to add/delete a few packages that get upgraded. You can change them in the KDE_PACKAGES variable. For example, I didn't want SDK for KDE, so i removed kdesdk from the list.
Make sure you're connected to the net and start the kdedelta.sh script:
# sh kdedelta.sh
The script will download the delta patches for packages that are present in distfiles and the new package if the package does not exist. The delta patches are then applied to the existing sources and new tarballs are created. The script then removes the delta patches.
Once the script finishes, you'll have the newer version of KDE.
[edit] Tips
The safer way of doing things: Create a directory and store all your existing KDE sources and the script itself:
# mkdir kde-3.3.1 # cd kde-3.3.1 # cp /usr/portage/distfiles/kde*3.3.1.tar.bz2 . # cp kdedelta.sh kde-3.3.1
Comment out
cd $DISTDIR
and
rm $DELTAFILE
from kdedelta.sh to use the sources from the new directory and to keep the delta patches.
Run the script. You should end up having the new tarballs in the current directory. Copy them to distfiles:
# cp kde*3.3.2.tar.bz2 /usr/portage/distfiles
Emerge and enjoy!
[edit] Credits
Nicolai Lissner <nlissne at linux01 dot gwdg dot de> for his wonderful script
