不能将sbt 0.13.7与Play子项目一起使用 [英] Can't use sbt 0.13.7 with Play subprojects

问题描述

我有一个示例Play 2.3.8项目，该项目由两个子项目(common和common2)组成:

I have a sample Play 2.3.8 project that is composed by two subprojects (common and common2):

$ tree -L 2 .
.
├── build.sbt
├── common
│   ├── app
│   ├── build.sbt
│   ├── conf
├── common2
│   ├── app
│   ├── build.sbt
│   ├── conf
├── conf
│   (...)
├── build.sbt

在主build.sbt中，对这两个子项目的依赖关系定义为:

And in the main build.sbt the dependency to those two subprojects is defined as:

lazy val common = (project in file("common")).enablePlugins(PlayJava)

lazy val common2 = (project in file("common2")).enablePlugins(PlayJava)

lazy val main = (project in file(".")).enablePlugins(PlayJava)
                    .aggregate(common, common2).dependsOn(common, common2)

，这按预期工作.现在，我试图使该项目使用sbt 0.13.7(当前使用0.13.5)，并且当我启动激活器时，我总是会收到这样的错误(Test是我的项目的根):

and this works as expected. Now I am trying to make this project use sbt 0.13.7 (currently it uses 0.13.5) and when I start activator I always get a error like this (Test is the root of my project):

[info] Done updating.
java.lang.RuntimeException: No project 'common' in 'file:/home/user/Desktop/Test/'.
Valid project IDs: main
    at scala.sys.package$.error(package.scala:27)
    // OMITTED
    at xsbt.boot.Boot.main(Boot.scala)
[error] No project 'common' in 'file:/home/user/Desktop/Test/'.
[error] Valid project IDs: main
[error] Use 'last' for the full log.

那么可能是什么问题?定义子项目的方式是否已更改?我查看了从0.13开始的更改. 5至0.13.7，找不到与此相关的任何内容...

So what could be the problem? Have the way to define subprojects changed? I have looked at the changes from 0.13.5 to 0.13.7 and can't find nothing related to this...

推荐答案

实际上，似乎在sbt 0.13.5和0.13.6之间发生了一些变化.在我的示例项目中，我在主build.sbt中定义了所有子项目，但在子项目文件夹中也对其进行了重新定义.

Indeed it seems that something changed between sbt 0.13.5 and 0.13.6. In my sample project I have all the subprojects defined in the main build.sbt, but had also them redefined inside the subprojects folder.

例如，在common/build.sbt中，子项目再次定义为

So in common/build.sbt for example, the subproject is defined again as

lazy val main = (project in file(".")).enablePlugins(PlayJava)

这在0.13.5中效果很好，但此后便中断了.

This works well in 0.13.5, but breaks after that.

因此解决方案是删除这些行，而仅在主build.sbt中定义子项目.

So the solution was to remove those lines and only define the subprojects in the main build.sbt.

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