使 SBT 任务依赖于 OneJar 任务 [英] Getting an SBT task to depend on the OneJar task

问题描述

我无法让我的新 SBT 任务安装"依赖于 OneJar任务.这是我的 Build.scala 文件:

I'm having trouble getting my new SBT task 'install' to depend on the OneJar task. Here's my Build.scala file:

import sbt._
import Keys._
import com.github.retronym.SbtOneJar._

object BuildBroBuild extends Build {
  val install = TaskKey[Unit]("install", "Installs the JAR and a launcher script into your homedir")

  private def installTask = task {
    println("Hello world!")
  }

  override lazy val settings = super.settings ++
    Seq(install <<= (oneJar in Global)(installTask dependsOn(_)))

  lazy val root = Project(id = "buildbro",
                          base = file("."),
                          settings = Project.defaultSettings)
}

这是我得到的错误:

[error] Reference to undefined setting: 
[error] 
[error]   */*:one-jar from {.}/*:install
[error]      Did you mean *:one-jar ?
[error]  

有人知道这是什么意思吗?我相信我必须以不同的方式确定 oneJar TaskKey 的范围.感谢您提供的任何帮助.

Does anybody know what this means? I believe I have to scope the oneJar TaskKey in a different way. Thanks for any help you can offer.

推荐答案

我认为这样的事情应该可行:

I think something like this should work:

object BuildBroBuild extends Build {
  val install = TaskKey[Unit]("install", "Installs the JAR and a launcher script into your homedir")

  private lazy val installTask = install <<= (oneJar, streams) map { case (a, s) => {
    // 'a' is the output from the onejar task (ie, the artifact)
    println("Hello world!")
  }

  override lazy val settings = super.settings ++
    Seq(installTask)

  lazy val root = Project(id = "buildbro",
                          base = file("."),
                          settings = Project.defaultSettings)
}

在这里，我们将 oneJar 任务的输出(以及允许日志记录等的 streams)作为我们新任务的输入.

Here, we are taking the output of the oneJar task (as well as streams, which allows for logging, etc) as input for our new task.

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