Curious if you could elaborate on why. I can see it being an impractical spec to validate outside of narrow test scenarios, but the documentation benefit seems worthwhile even so

because spec is about data and atoms are about state

it makes sense to me to spec the functions used to update an atom though

this is just my own thoughts btw, not sure if rich or stu would agree so take it with that perspective

I guess people could use set-validator! with a normal spec? Does anyone ever use it?

I used to do exactly that with prismatic Schema. Works well

Yes

It's all so... composable

Am I… doing something wrong here?

(clojure.spec.gen/vector clojure.spec.gen/char-alphanumeric 5)
AssertionError Assert failed: First arg to vector must be a generator
(generator? generator)  clojure.test.check.generators/vector (generators.cljc:446)

sorry, I see now, these vars turned into fns, presumably to facilitate lazy-loading