Sounds a bit like fuchsias launchpad library where you create launchpad object, do all the setup, and then call launchpad_go to actually start the process. Laun

Sounds a bit like fuchsias launchpad library where you create launchpad object, do all the setup, and then call launchpad_go to actually start the process. Launchpad doesn't allow arbitrary syscalls in the setup, so in that sense it is maybe closer to "spawn" interface but with better ergonomics https://cs.opensource.google/fuchsia/fuchsia/+/main:zircon/system/ulib/launchpad/include/launchpad/launchpad.h https://cs.opensource.google/fuchsia/fuchsia/+/main:zircon/s...