Consider automatically adding 'svm' dependency

[JakeWharton]

In order to help out Graal, I very often add

compileOnly "org.graalvm.nativeimage:svm:20.1.0"

as a dependency.

Lately I've been doing

compileOnly "org.graalvm.nativeimage:svm:${graal.graalVersion.get()}"

to avoid the split brain problem for the version specification.

It would be nice if this dependency was added automatically. Being compileOnly it doesn't affect downstream consumers like the normal application plugin output or a shadow jar or the like.

Just in case this has some negative interaction, a property could be added to disable this functionality.

graal {
  svmDependency false
}

(or whatever you want to call it)

[yschimke]

Be careful with ordering here, if your dependencies are listed before the grall config, you get the default version. Also I think you can drop the get(), I assume toString does the right thing.

[JakeWharton]

True. It probably would need applied in afterEvaluate to ensure the user has set their desired version.

[yschimke]

Also relevant you can easily trigger #148 if you use implementation instead of compileOnly