sbt - 如何在自定义 sbt 命令中暂时跳过运行编译任务？

Question

我试图在运行 package 时暂时跳过编译任务来自 quick-install 内的任务命令(在我正在编写的 sbt 插件中定义)。我可以通过放置 skip 跳过所有编译compile 上的设置任务，但这会导致所有 compile要跳过的任务:

  object MyPlugin extends Plugin {
    override lazy val settings = Seq(
      (skip in compile) := true
    )
    ...
  }

我需要的是只跳过 compile运行我的 quick-install 时命令。有没有办法临时修改设置，或仅将其范围限定为我的快速安装命令？

我尝试了一个设置转换(基于 https://github.com/harrah/xsbt/wiki/Advanced-Command-Example )，它应该替换 skip := false 的所有实例与 skip := true ，但它没有任何影响(即转换后仍会进行编译):

object SbtQuickInstallPlugin extends Plugin {
  private lazy val installCommand =  Command.args("quick-install", "quick install that skips compile step")(doCommand(Configurations.Compile))

  override lazy val settings = Seq(
    commands ++= Seq(installCommand),
    (Keys.skip in compile) := false    // by default, don't skip compiles
  )

  def doCommand(configs: Configuration*)(state: State, args: Seq[String]): State = {
    val extracted = Project.extract(state)
    import extracted._
    val oldStructure = structure

    val transformedSettings = session.mergeSettings.map(
      s => s.key.key match {
        case skip.key => { skip in s.key.scope := true } // skip compiles
        case _ => s
      }
    )

    // apply transformed settings (in theory)
    val newStructure = Load.reapply(transformedSettings, oldStructure)
    Project.setProject(session, newStructure, state)

    ...
}

知道我缺少什么和/或更好的方法吗？

编辑:

跳过设置是一项任务，因此一个简单的解决方法是:

object SbtQuickInstallPlugin extends Plugin {
  private lazy val installCommand =  Command.args("quick-install", "quick install that skips compile step")(doCommand(Configurations.Compile))

  private var shouldSkipCompile = false  // by default, don't skip compiles

  override lazy val settings = Seq(
    commands ++= Seq(installCommand),
    (Keys.skip in compile) := shouldSkipCompile
  )

  def doCommand(configs: Configuration*)(state: State, args: Seq[String]): State = {
    shouldSkipCompile = true // start skipping compiles

    ... // do stuff that would normally trigger a compile such as running the packageBin task

    shouldSkipCompile = false // stop skipping compiles
  }
}

我不相信这是最强大的解决方案，但它似乎适合我的需要。

Answer 1

object SbtQuickInstallPlugin extends Plugin {
  private lazy val installCommand =  Command.args("quick-install", "quick install that skips compile step")(doCommand(Configurations.Compile))

  private var shouldSkipCompile = false  // by default, don't skip compiles

  override lazy val settings = Seq(
    commands ++= Seq(installCommand),
    (Keys.skip in compile) := shouldSkipCompile
  )

  def doCommand(configs: Configuration*)(state: State, args: Seq[String]): State = {
    shouldSkipCompile = true // start skipping compiles

    ... // do stuff that would normally trigger a compile such as running the packageBin task

    shouldSkipCompile = false // stop skipping compiles
  }
}

很好，当然你可以去!