Peter Mattern

> libgtk-3-dev is installed You sure? The very same error message you state in this issue's title disappears by installing exactly this package on Debian testing x86_64 ("amd64") here.

_systemd_ *.pacnew files get created if files _provided by packages_ are modified. But regarding systemd the common habit is to place system-wide units in /usr and handle local configuration changes...

> Still, /etc/aarchup.conf would need to be in backup array in PKGBUILD. But that's totally consistent with what I've been saying: any configuration file in /etc that's part of a...

Indeed. In recent VCS versions the name of virtual desktops can be changed from the configuration dialog of "Desktop switcher" (="Changeur de bureau" en français), so switching to VCS packages...

The problem exists under LXDE and Xfce as well but cannot be seen in KDE Plasma. In Plasma icons to launch applications seem to be implemented as part of their...

Under Plasma a custom icon set by key `Icon` of an application's desktop entry file is considered when the application is launched by invoking its binary from a terminal emulator,...

Assigning different icons to a particular application by different desktop entry files makes hardly ever any sense, IMO. Anyway it is not the use case this issue is referring to....

> There is the option in plugin-taskbar to use the symbolic icon name provided by WM_CLASS and in that way the user can create/use icon theme of her/his whish to...

> What setting? I mean the steps which have to be taken to tweak the icon that is displayed via WM_CLASS.

I agree with @palinek and @stefonarch as well.