Give scala-native a try

It should be possible to have a workish scala-native command-line tool, by taking a few shortcuts. It’d be interesting to compare the perf of such a tool to its JVM counterpart.

Among the points to address / circumvent:

• use scalaz 7.3.0-M10 (hoping the sources of coursier are fine with it),
• don’t depend on fastparse, which doesn’t seem to be compiled for scala-native (temporary, only used to parse Ivy “patterns” - either remove support for Ivy repos, or use an old dependency-free workish implem of the parser),
• concurrency: on the JVM, it is brought by the use of scalaz.concurrent.Task as a monad. Something like cats.Eval (don’t know the scalaz equivalent) could be used instead, to effectively disable concurrency.
• IO: in a first time, a cache-less coursier.Fetch could be implemented, so that only network stuff would have to be handled (with libcurl?) It already works this way with scala-js in the web module.

With all these points worked around, a workish scala-native-based command-line tool should be able to run resolutions.

[alexarchambault]

I might give it a try again, using libuv (spotted here).

[jgogstad]

@rwhaling also provides an example of a libuv driven ExecutionContext in Modern Systems Programming with Scala Native (it looks to be the topic of this talk on ScalaDays 2019 as well)

You can get the source code from the docker image he ships with the book