rego reinstalls and reruns a Go program when its source files change.

Usage:

go get -u sourcegraph.com/sqs/rego
rego [-v] [-race] import-path [optional args to program...]

Unlike rerun, it doesn't recreate and rewatch all files after each change. It has fewer features than rerun, though. I made it because my Mac was complaining about having too many watched files since removing files from kevent watchers wasn't working for some reason, and it was easier to write this than dig into the kernel internals.