Also ,shouldn't this

🐟  ./bin/kaocha --watch --fail-fast
E[watch] Fatal error in test run #error {
 :cause throw+: #:kaocha{:fail-fast true}
 :data #:kaocha{:fail-fast true}
 :via
 [{:type clojure.lang.ExceptionInfo
   :message throw+: #:kaocha{:fail-fast true}
   :data #:kaocha{:fail-fast true}
   :at [slingshot.support$stack_trace invoke support.clj 201]}]

CompilerException: Syntax error reading source at ...
Caused by: java.lang.RuntimeException: failed: (<= 1 days (days-in-month months (leap-year? years)))