Hi!

After upgrading to Excalibur I started to get the error:
GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Passed session and the session the caller is in differs

To fix the error I've removed
libpolkit-gobject-consolekit-1-0 version is 126-2devuan1+excalibur1

instead of it libpolkit-gobject-elogind-1-0 of 126-2devuan1+excalibur1 version was installed

I hope this will be useful