I'm having trouble with the HTTP server started by (component/start (figwheel-sidecar.system/figwheel-system (assoc-in (figwheel-sidecar.system/fetch-config) [:data :figwheel-options :ring-handler] my-ring-handler))) not shutting down on component/stop. Any pointers?

Hmm. (component/stop @(:system my-figwheel-component)) does appear to work in practice.