Fedora 20 with KDE SC 4.14 has been very stable, and after a while it gets…boring – especially when Plasma 5 is already released and you see screenshots everywhere. If you cannot hold the urge and feel sufficiently adventurous, Dan Vratil has built the Fedora 20 and 21 rpms here. If you install i386 versions, beware that baloo-widgets cannot be installed due to unmet dependencies. So, once you install dvratil’s copr repo, just do:
dnf copr enable dvratil/kde-frameworks dvratil/kde-frameworks-unstable dvratil/plasma5 dnf remove kde\* && dnf install kf5\* plasma5\* --exclude=kf5-baloo-widgets\*
I had to manually edit
/usr/share/xsessions/plasma.desktop to change
"/usr/bin” so that “Plasma 5″ appears in gdm list. After logging in, the desktop runs smooth, but you notice the lack of many applications because they are not yet fully ported to KF5/Plasma5.
Once I had the Qt5/KF5/Plasma5 based workstation fully operational, I could also develop, build and test KF5 based applications. Most of the KDE apps are ported or being ported to KF5 under
'frameworks' git branch. As the OpenSuSe team already have started building KF5 based apps in an unstable repository, I could leverage the spec files to build rpms.
The first itch I scratched was unavailability of touchpad configuration kcm. Not being able to enable touch-to-tap, vertical and horizontal scrolling is no fun. Looking at the git repo for kcm-touchpad showed that it is not yet ported to KF5. Checked out the git repo and started porting. There are quite some references, blogposts and tools available online to guide and ease the porting effort. As it is a kcm that is being ported, the first place to go is Frameworks Porting Notes. The subtopic of ECM (extended cmake modules) source incompatible changes is also handy updating CMakeLists.txt files. The next thing is reference to Martin Graesslin’s post on porting kcontrol module. And the final tool that is quite useful to port API changes is the kde-dev-scripts. Run the source files through relevant script – like
"find -iname "*.cpp" -o -iname "*.h" -o -iname "*.ui" | xargs ~/Programs/Projects/kde-dev-scripts/kf5/<porting-script.pl>". When you hit an API change that cannot be automatically converted by the script, check frameworks at api.kde.org. Then port away, setup a build directory, compile, note the build failure, fix the build – repeat.
Alexander Mezin and Hrvoje Senjan reviewed the patches and after 6 revisions the patch is committed in kcm-touchpad
RPMs for Fedora 20 and 21 (i386, x86_64) are built and available at my copr repo. It contains builds of kmix and konsole as well. More to build and I’ll make them available in the same repo once build completed. You are welcome to try at your own risk :-)