When i removed slim i saw the package task-lxde-desktop was removed as
well. I checked a bit and i saw:

----
This package is used to install Devuan desktop, featuring the LXDE
desktop environment, and with other packages that Devuan users expect
to have available on the desktop
----

It depends on tasksel, task-desktop, lxde and slim. Moreover it
recommends a long list of software. Is such a package really necessary?
I'd think lxde as a metapackage already pulls in all what is needed for
the lxde desktop - also in Devuan. Or are there some hidden
dependencies on systemd which need to be overwritten?