Make it even easier to add library dependencies?

[lrytz]

This works:

~/scala/scala-runners/scala -cp $(coursier fetch -p com.chuusai:shapeless_2.13:2.3.3)

But it would be nicer with less boilerplate, something like scala -dep com.chuusai:shapeless. We know the binary version, coursier finds (right?) the latest dependency version.

Also, doing everything in one invocation of coursier would make it faster.

[dwijnand]

In the shell script wrapper (that is this project) we don't exactly have the binary version. With the -212, etc flags we do. We'd have to switch from latest.stable to 2.13+ as the default in order to have a default binary version that matches. But what do we do with --scala-version 2.13.0-RC? Use 2.13 or the whole string? What about 2.13.0-bin- or 2.14.0-pre-?

And still that wouldn't solve the number of invocations of coursier. Because coursier launch wants to resolve scala-compiler and its transitive dependencies to run the repl main. Separately the repl main can take a classpath of dependencies..

So it doesn't really fit into coursier's CLI APIs. Perhaps the solution is a Graal native built coursier, called twice. Or perhaps this project should become a Scala project and switch from Coursier's CLI API to its library API.

[dwijnand]

This is the alternative that we should the Graal native built solution to:

• Coursier's CLI API: https://get-coursier.io/docs/api.html
• overlay the command-line flags (like sbt-extras) to pull out scala-runner specific options, like --dep that runs Coursier to get dependencies that then feed into the classpath of the scala app (e.g. scalac, the scala repl. etc)
• then sbt publishLocal and coursier bootstrap from ~/.ivy2/local in the homebrew formula

[lrytz]

Given https://twitter.com/alxarchambault/status/1256195610031591424, this works:

➜ ~/Applications/bin/scala-runners/scala -Ccom.lihaoyi::fastparse:2.2.2
Welcome to Scala 2.13.2 (Java HotSpot(TM) 64-Bit GraalVM EE 19.2.1, Java 1.8.0_231).
Type in expressions for evaluation. Or try :help.

scala> import fastparse._, NoWhitespace._
import fastparse._
import NoWhitespace._

So we can close this, it's a matter of documentation.

[dwijnand]

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