In the namespaces branch of babashka:

$ bb "(in-ns 'foo) (println ::keyword) (in-ns 'bar) (println ::keyword)"
:foo/keyword
:bar/keyword

$ rlwrap nc 127.0.0.1 1666
Babashka v0.0.35-SNAPSHOT REPL.
Use :repl/quit or :repl/exit to quit the REPL.
Clojure rocks, Bash reaches.

user=> (in-ns 'foo)
nil
foo=>

TODO: the last two points here: https://github.com/borkdude/sci/issues/169

Will probably implement later this week

300 Github stars! :star-struck: