This doesn't work for me either:

bar=> (ns-unmap *ns* 'ns)
nil
bar=> (resolve 'ns)
#'clojure.core/ns

I'd post an issue (+ patch) after receiving some feedback on this

It seems there is a hardcoded case for this: https://github.com/clojure/clojure/blob/527b330045ef35b47a968d80ed3dc4999cfa2623/src/jvm/clojure/lang/Compiler.java#L7446

I think I found a workaround using definterface

not sure what you're looking for, it's a special case

I was trying to define a protocol with an ns method to get compatibility in SCI with clojure.lang.Var but this isn't possible without emitting warnings

but I managed to work around it using definterface:

$ ./sci "(let [v #'inc] (.name (.ns v)))"
clojure.core

You might wonder why: well, I'm trying to make a library that you wrote compatible with bb, without changing it too much ;)

I think there is a better option for that idiom now

perhaps:

user=> (-> #'inc symbol namespace)
"clojure.core"

(namespace (symbol #'inc))

yeah

we made those changes to symbol in 1.9 or 1.10

agreed. would you consider changing it here? https://github.com/clojure/tools.build/blob/5624ba3e0327e0e1a214b77c7b6b033bd2f6e6f0/src/main/clojure/clojure/tools/build/tasks/compile_clj.clj#L33

sure

cool, then I'll roll back my changes :)

the full idiom is: (-> #'inc symbol namespace symbol) to get back a namespace symbol

There's also a similar thing here https://github.com/clojure/spec.alpha/blob/251c10b2199d0398bc19b3295166d35f8e6e198f/src/main/clojure/clojure/spec/alpha.clj#L305

This was introduced in 1.10, I guess clojure spec was introduced in 1.9 right

yeah

committed in t.b - do you need a release?

not necessary - thanks!

I still come across this interop a lot, e.g. recently I made a PR here: https://github.com/borkdude/hyperfiddle-rcf/commit/9ce258d75a87cd8c8d9ab6b5fa01f3ca37a29782

yeah, this was a common thing, that's why we modified symbol

I committed the switch in spec.alpha too

wouldn't that make spec.alpha incompatible with 1.9?

it already depends on 1.10.3

cool, then I can remove one more diff in babashka.spec.alpha!

I also updated babashka spec alpha with the latest spec alpha changes (pull upstream) If you're interested, the diff is here: https://github.com/clojure/spec.alpha/compare/master...babashka:spec.alpha:babashka?w=1 The biggest difference is clojure.lang.Compiler/demunge not (yet) being available in bb, so it works around that by using clojure.main/demunge

I guess:

(symbol (str (.name *ns*)) (str s))

or simply str