Jamf Setup Manager installing Jamf Connect at login window
In my testing, having Jamf Setup Manager install Jamf Connect at the login window, will result in Jamf Connect killing the loginwindow process and Jamf Setup Manager does not complete successfully.
I am working around this by faking a Setup Assistant process so that Jamf Connect Login's postinstall script thinks it's being installed during Setup Assistant and exits.
I'd much rather that Jamf Connect detects that Jamf Setup Manager is installing it, or that Jamf Connect had a silent install option, where the binaries are put on disk but don't launch until after the next restart.
https://ideas.jamf.com/ideas/ID-I-432
we are working on a solution for this, though not in the way you described
using this LaunchDaemon to run the installation (from a policy or Installomator) after Setup Manager is finished should do the trick. https://github.com/scriptingosx/SetupManagerFinishedScript
If you want this to be integrated into Setup manager, please create a feature request
https://github.com/jamf/Setup-Manager/discussions/96
implemented finishedTrigger and finishedScript in 1.3 which can be used to perform installations outside of the Setup Manager process.