kali-themes

This package joins together all files that are related to theming and configuration of the visual appearance. They were formerly split across gnome-theme-kali, kali-defaults and desktop-base.

desktop-base integration

desktop-base integration is provided by kali-desktop-base through registration of various files in alternatives defined by the desktop-base package. The files are not installed in /usr/share/desktop-base/ except for a symlink tree mimicking a "destkop-base theme". That symlink tree is pre-built in the "desktop-base" directory in the source package.

The kali-themes-common package is also installing various symlinks trees to mimick directories that are traditionnally handled by desktop-base. Most notably the directories in /usr/share/wallpapers/ that are used by KDE.

configuration files

The configuration files stored in the "etc" sub-directory are installed as is in the "kali-themes" package. However the files listed in "files-to-divert" are first diverted by dpkg-divert and the actual files are stored in /usr/share/kali-themes/etc/ and copied in their target location by the postinst script (see debian/kali-themes.postinst).

When you add a new file that needs to be diverted, you can update the list in "files-to-divert" and run "debian/update-maintainer-scripts" to update the list of files in the 3 maintainer scripts. But you also need to add a snippet in debian/kali-themes.preinst to setup the new diversion on upgrade.