2026-06-22 sci | Clojure Slack Archive

sci

chromalchemy 2026-06-22T17:31:58.106149Z

I started getting errors from when loading repl

Execution error (ClassNotFoundException) at java.net.URLClassLoader/findClass (URLClassLoader.java:377).
sci.impl.types.IReified
Evaluation of file build.clj failed: class clojure.lang.Compiler$CompilerException

I have squint, which apparently pulls in SCI via git dep. And this was apparently this was removed in 0.0.3. But libraries pull in older versions via maven coordinate. So there emerged conflicts in code expectations. Claude debugging it worked around by explicitly excluding the maven coordinate, to all use the squint version..

chromalchemy 2026-06-22T17:32:44.527659Z

ai notes: squint uses its own git sci (io.github.babashka/sci) directly, but also The maven sci collides with the git sci (IReified vs ICustomType). org.babashka/sci; squint’s git sci + its org.babashka/sci.impl.types 0.0.3 (ICustomType) must stay. two sci versions with a renamed interface, IReified→`ICustomType`, separate pullers

borkdude 2026-06-22T17:36:30.369129Z

yeah pulling in an older version is a problem. always use the newest :)

chromalchemy 2026-06-22T17:37:22.174869Z

But some libraries might pull older, so user must be aware to exlude sci from those deps. Is that accurate?

borkdude 2026-06-22T17:38:17.318229Z

I guess it's a git/sha vs mvn/version problem that clj can't resolve?

chromalchemy 2026-06-22T17:42:36.359989Z

this seems to be working for me in deps.edn

;; noj drags maven sci 0.12.51 which collides with squint's git sci.
;; Exclude the maven sci so the project unifies on a single (git) sci, loaded by squint.
org.scicloj/noj {:mvn/version "2-beta24"
                 :exclusions [org.babashka/sci]}

borkdude 2026-06-22T17:43:23.552659Z

👍 not sure what wins in clj, :mvn/versions of :git/shas.

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