Hi all,
I’ve created app that waits for you to shutdown or reboot and runs a script. Tested and verified everything works.
I got tired of waiting for UserShutdownFinishScript to work and needed this real bad because I’m always having to uninstall nebula to build certain apps. Forgetting that nebula is uninstalled won’t be a problem ever again! 
Source Code
SleepWalker-1.0.0-1-x86_64.hpkg
SleepWalker-1.0.0-1-x86_gcc2.hpkg
Seems to work, thank you for this. It really fills a gap.
I would suggest that you save it as a background app. It’s just cluttering up the Deskbar ATM.
@michel appreciate ya! I would love to have it as a background app as I really don’t like seeing it either. Currently I think Haiku assumes all background apps as non priority to foreground apps and just closes them. Would be nice to have an extra resource flag for just this case, but that is up to the Haiku Devs. Btw, have you tried building from source? It has some nice updates that the hpkg hasn’t. 