Clojurians Log v2
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leiningen 2025-04-30
ghaskins 2025-04-30T20:37:11.061639Z
I have an AOT uberjar app that includes a dependency on a multi-release jar. The resulting uberjar includes the wrong (Java 8) version of the class from the dep when I want the Java 21 variant. Is there a way to do this?
ghaskins 2025-04-30T20:38:25.907619Z
I’m building/running on JDK24, and am fine doing things like javac-options -target “21”, but so far I’ve not found options that work
I forget exactly how multi release jars work, but I think it is a subfolder thing along with an attribute set in the jars manifest. Uberjaring is mostly just copying stuff over, so likely the subfolder stuff is intact in your uberjar. If that is the case adding the multi release properly to the uberjars manifest might "just work"
👍 1
Alex Miller (Clojure team) 2025-04-30T21:47:08.987819Z
iirc I did some small change in tools.build to mark the manifest as Multi-Release if any of the jars had a META-INF/versions dir
Alex Miller (Clojure team) 2025-04-30T21:47:19.595509Z
that's probably all that's needed if it's not in there
ghaskins 2025-04-30T22:14:17.650789Z
> Uberjaring is mostly just copying stuff over, It is indeed there, I see what I need under META-INF/versions/21. Ty!
ghaskins 2025-04-30T22:14:39.243759Z
> that’s probably all that’s needed if it’s not in there Ty, im adding that to my manifest now
ghaskins 2025-04-30T22:44:59.442409Z
to my project.clj worked. Ty both @hiredman and @alexmiller