Coursier

1.1.0-M10

Edit

API

Add to your build.sbt

libraryDependencies ++= Seq(
  "io.get-coursier" %% "coursier" % "1.1.0-M10",
  "io.get-coursier" %% "coursier-cache" % "1.1.0-M10"
)

Add an import for coursier,

import coursier._

To resolve dependencies, first create a Resolution case class with your dependencies in it,

val start = Resolution(
  Set(
    Dependency(
      Module(org"org.scalaz", name"scalaz-core_2.11"), "7.2.3"
    ),
    Dependency(
      Module(org"org.typelevel", name"cats-core_2.11"), "0.6.0"
    )
  )
)

Create a fetch function able to get things from a few repositories via the local cache,

import coursier.util.Task

val repositories = Seq(
  Cache.ivy2Local,
  MavenRepository("https://repo1.maven.org/maven2")
)

val fetch = Fetch.from(repositories, Cache.fetch[Task]())

Then run the resolution per-se,

import scala.concurrent.ExecutionContext.Implicits.global

val resolution = start.process.run(fetch).unsafeRun()

That will fetch and use metadata.

Check for errors in

val errors: Seq[((Module, String), Seq[String])] =
  resolution.errors

Any error would mean that the resolution wasn't able to get metadata about some dependencies.

Then fetch and get local copies of the artifacts themselves (the JARs) with

import java.io.File
import coursier.util.Gather

val localArtifacts: Seq[Either[FileError, File]] =
  Gather[Task].gather(
    resolution
      .artifacts()
      .map(Cache.file[Task](_).run)
  ).unsafeRun()

See the dedicated page for more details.

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