如何为SBT依赖关系回退Scala版本？

Question

我在我的依赖项中build.sbt没有2.9.0-1我正在使用的Scala的特定构建,而是我应该使用构建2.9.0.如何配置构建,以便它确定不指定每个依赖项的确切版本？例如,subcut没有构建2.9.0-1.

我的一些线路build.sbt:

...
scalaVersion := "2.9.0-1"
libraryDependencies ++= Seq(
  "org.scala-tools" %% "subcut" % "0.8"
)
...

我宁愿避免这个:

  "org.scala-tools" % "subcut_2.9.0" % "0.8"

指定多个版本的东西,它按指定的顺序尝试.

Answer 1

这就是我所做的:

libraryDependencies <++= (scalaVersion) { (v) =>
  val scalaVersionString = v match {
    case "2.9.0-1" => "2.9.0"
    case _ => v
  }
  Seq(
    "org.scala-tools.testing" % ("scalacheck_" + scalaVersionString) % "1.8" % "test" withSources,
    "org.specs2" %% "specs2" % "1.3" % "test" withSources,
    "com.github.dmlap" %% "sizeof" % "0.1" % "test" from "http://cloud.github.com/downloads/dmlap/jvm-sizeof/jvm-sizeof-0.1.jar"
  )
}