gnu: plasma-desktop: Update to 6.1.2.
* gnu/packages/kde-plasma.scm (plasma-desktop): Update to 6.1.2.
[inputs]: Remove packagekit-qt5, signond, appstream-qt, kactivities,
kactivities-stats, kdelibs4support, kinit, libaccounts-qt,
plasma-framework, qtbase-5, qtdeclarative-5, qtquickcontrols-5,
qtquickcontrols2-5, qtwayland-5, and qtx11extras; add packagekit-qt6,
signond-qt6, icu4c, appstream-qt6, plasma-activities,
plasma-activities-stats, ksvg, plasma5support, libaccounts-qt6,
libplasma, qt5compat, qtdeclarative, and qtwayland.
[propagated-inputs]: Add kcmutils.
[native-inputs]: Remove qtsvg-5, qttools-5, and qtwayland-5; add qtsvg, qttools,
libxml2, and qtwayland.
[arguments]: Set #:qtbase to qtbase.
<#:phases>: Adjust disabled test.
Change-Id: Ie1dc72ab52b3d39eebca95e75ab06085c35f9b7a
c1586f03ba