Stuart Sierra inspired the Integrant REPL library

A Clojure developer named Stuart Sierra developed and taught a Clojure workflow that inspired James Reeves to build a library that implements it using Integrant: the Integrant REPL library. In my limited understanding, I see the workflow uses a global state with starting and stopping functions to set the state and clear the state. With Integrant REPL, it does this but with Integrant.