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Kawa is a Scheme which runs on the JVM and is pretty great.

https://www.gnu.org/software/kawa/index.html

I am one of these people who cannot countenance a Lisp that doesn't have `syntax-case`.

kawa is unfortunately a somewhat shoddy project. Alot of halfbaked features / abstraction ideas (eg trying to support CL for whatever reason), dubious tooling for a java project (autotools), unclean and inconsistent code formatting. It's missing some features that are expected in a real scheme like multishot continuations; someone wrote research about it as a MSc thesis, but due to mentioned shoddiness its integration to upstream stalled and hadn't been merged.

At some point I thought of forking it to then cut out and polish the core, but then my attention got caught by graal's truffle framework as a plausibly better path for implementing scheme in java

Its funny, I can definitely sympathize with wanting multishot continuations, but I can't think of many times where I have wanted them to solve a problem.

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