This article gives some nice background. https://lwn.net/Articles/742675/ https://lwn.net/Articles/742675/ It would be interesting for the shell to open a var

This article gives some nice background. https://lwn.net/Articles/742675/ https://lwn.net/Articles/742675/ It would be interesting for the shell to open a varlink connection to commands to allow progress updates. I could also see shells command completion interface being greatly simplified by using varlink.