sbt多项目定义中的“参数指定两次:聚合”

Question

我正在尝试用sbt设置一个多项目。目前它很简单(我这样做是为了学习)，但我对它有一些麻烦。

这是文件夹结构

MyProject
 |
 |-project
      |
      |- Build.scala

Build.scala文件的内容：

import sbt._
import Keys._

object RootBuild extends Build {
    lazy val root = Project(id = "root", base = file(".")) aggregate(bar, foo)

    lazy val foo = Project(id = "foo", base = file("foo"), dependsOn(bar))

    lazy val bar = Project(id = "bar", base = file("bar"))
}

当我运行sbt clean compile时，我得到以下错误：

[info] Done updating.
[info] Compiling 1 Scala source to C:\MyProject\project\target\scala-2.9.2\sbt-0.12\classes...
[error] C:\MyProject\project\Build.scala:7: parameter specified twice: aggregate
[error]     lazy val foo = Project(id = "foo", base = file("foo"), dependsOn(bar))
[error]                    ^
[error] one error found
[error] (compile:compile) Compilation failed
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore? qTerminate batch job (Y/N)? 

我不确定为什么我会得到这个错误，有什么想法可以解决这个问题吗？

Answer 1

将dependsOn移出Project(id = "foo", base = file("foo")).dependsOn(bar)项目。如果要在项目声明中添加项目依赖项，请使用project case类的依赖项参数：

dependencies: => Seq[ClasspathDep[ProjectReference]]

lazy val foo = Project(id = "foo", base = file("foo"), dependencies = Seq(bar))