Clojurians Log v2

update-in : assoc :jvm-opts "[...]" should work

Many thanks!

Actually, seems that it’s not working 🤔 Context: I have this in my lein profile:

{:repl {:jvm-opts     ["-Dclojure.server.repl={:port,5555,:accept,clojure.core.server/repl}"]}}

lein update-in : assoc :jvm-options "-Dclojure.server.repl={:port,0,:accept,clojure.core.server/repl}" -- repl

Exception in thread "main" java.net.BindException: Address already in use

The repl profile is probably being merged on after your update-in command

So may be difficult to accomplish what you want with this setup

You maybe could use :displace metadata on the repl profile :jvm-opts

Got it. Thanks for the explanation. I think I will change my approach then – I’ll remove jvm-opts from my profile and use it by demand.

So, I must be messing something really basic, because this isn’t working:

lein update-in :jvm-opts conj "-Dclojure.server.repl={:port,5555,:accept,clojure.core.server/repl}" -- repl

array element type mismatch

:jvm-opts []

For completeness, in

lein update-in : assoc :jvm-options "-Dclojure.server.repl={:port,0,:accept,clojure.core.server/repl}" -- repl

btw update-in is kind of a hack, there are things that certainly don't work with it. It's more idiomatic to use profiles

You can activate profiles as defined in the project itself (if it's under your control) or ~/.lein/profiles.clj

Fair point. Makes sense.