coursier/coursier

Here is a solution for obtaining the pom file that works with maven repositories - I basically peeked into MavenRepository:

      val cacheArt  = cache.FileCache[Task](cfg.artDir)

      val appDepPOM = appDep.withTransitive(false)
      val resolvePOM = Resolve(cacheResolve).addDependencies(appDepPOM).withRepositories(repos)
      resolvePOM.future().foreach { resolution =>
        println("---- RESOLVED ARTIFACTS ----")
        resolution.artifacts().foreach { a =>
          println(s"url = ${a.url}") // ; extra = ${a.extra}")
        }
        println("----")
        val artifacts = Artifacts(cacheArt).withResolution(resolution).addTransformArtifacts { sq =>
          sq.map { case (dependency, _ /*pub*/, art0) =>
            // cf. MavenRepository - metadataArtifact
            val metadataPub = Publication(dependency.module.name.value, Type.pom, Extension.pom, Classifier.empty)
            val metadataURL = {
              val u = art0.url
              assert (u.endsWith(".jar"))
              s"${u.substring(0, u.length - 4)}.${metadataPub.ext.value}"
            }
            val metadataArtifact  =
              Artifact(
                metadataURL,
                Map.empty,
                Map.empty,
                changing = false, // XXX TODO what is this?,
                optional = true,
                authentication = art0.authentication
              ).withDefaultChecksums.withDefaultSignature

            (dependency, metadataPub, metadataArtifact)
          }
        }
        val fetch = new Fetch(resolvePOM, artifacts, None)
        fetch.futureResult().foreach { res =>
          println("---- FETCHED ARTIFACTS ----")
          res.artifacts.foreach { case (_, f) =>
            println(f)
          }
          println("----")
        }
      }

---- RESOLVED ARTIFACTS ----
url = https://repo1.maven.org/maven2/de/sciss/mellite-app_2.13/2.48.0/mellite-app_2.13-2.48.0.jar
----
---- FETCHED ARTIFACTS ----
/home/hhrutz/.local/share/mellite/default/cs/https/repo1.maven.org/maven2/de/sciss/mellite-app_2.13/2.48.0/mellite-app_2.13-2.48.0.pom
----

is there a public API to achieve this? Also, this fails for local ivy repository, because the .pom is in a different directory. How do I get the Repository belonging to each artifact in a Resolution?