[paulddraper]

> it was too difficult to embed a JVM-based language into other runtimes and languages

In addition to the JVM, Scala has had JS [1] and native (via LLVM) [2] targets for years.

(And that's not even mentioning any second-order compilations; e.g. Scala -> JVM bytecode -> native)

There's a number of reasons to not choose Scala, but portability is far from one of them.

[1] https://www.scala-js.org

[2] http://www.scala-native.org

[pacala]

The library ecosystem is different between JVM/JS/Native. Porting across runtimes may require more work than just changing the compilation target.

[paulddraper]

That's true. If you want it across all platforms, you are restricted to the Scala ecosystem, and can't use Java and JS ecosystems.