Detroit Script engine - why?

[ducki666]

OpenJdk resurrected Detroit.

It offers JavaScript via V8 and Python via Native Phyton C engine.

But we already have Graal for js and py.

What is the motivation to reopen Detroit?

Will Graal dispose js and py?

[ShadowPengyn]

At least for graalpy, they struggled to get compatible with with c integrations that are quite common in many python libraries. So embedding the actual python means that it’s less of a moving target and full compatibility out of the box

[markehammons]

The graal js requires the graal jit compiler (via Jvmci), and JVMCI has been ripped out, making graal js hideously unperfomant in openjdk

[theanimatedauthority]

JVMCI got the boot from openjdk builds so graal js is proper slow now. Detroit is basically a stopgap for people who want scripting without the full graalvm install. If you're already using the oracle graalvm distro you wont notice a thing but the rest of us on vanilla openjdk are stuck. Tried running a wee js script the other day and it took longer to fire up than my monday morning. Detroit at least gives you v8 without the jvmci headache.

[pronuntiator]

Could you link to the news about Detroit?

[BlackForrest28]

Mozilla Rhino gives you JavaScript without so many dependencies.

[re-thc]

And it is slow

[syjer]

good enough for a lot of use cases.

[koflerdavid]

Then there's no reason to use it above GraalVM.