在sbt中,如何在所有配置中覆盖控制台的scalacOptions？

Question

我喜欢scalacOptions在顶级定义(例如,暂时忽略项目轴):

scalacOptions += "-Ywarn-unused-import"

但后来我意识到这太严格了console.所以我试着设置:

scalacOptions in console ~= (_ filterNot (_ == "-Ywarn-unused-import"))

但这不起作用(在REPL中仍然有致命的警告).

我曾经inspect尝试理解为什么:

> inspect console
[info] Task: Unit
[info] Description:
[info]  Starts the Scala interpreter with the project classes on the classpath.
[info] Provided by:
[info]  {file:/a/}b/compile:console
[info] Defined at:
[info]  (sbt.Defaults) Defaults.scala:261
[info] Dependencies:
[info]  compile:console::compilers
[info]  compile:console::initialCommands
[info]  compile:console::fullClasspath
[info]  compile:console::taskTemporaryDirectory
[info]  compile:console::scalaInstance
[info]  compile:console::streams
[info]  compile:console::cleanupCommands
[info]  compile:console::scalacOptions
[info] Delegates:
[info]  compile:console
[info]  *:console
[info]  {.}/compile:console
[info]  {.}/*:console
[info]  */compile:console
[info]  */*:console
[info] Related:
[info]  test:console

注意:console是

• 由...提供 compile:console
• 依赖于取决于 compile:console::scalacOptions

然后:

> inspect compile:console::scalacOptions
[info] Task: scala.collection.Seq[java.lang.String]
[info] Description:
[info]  Options for the Scala compiler.
[info] Provided by:
[info]  {file:/a/}b/compile:scalacOptions
[info] Defined at:
[info]  (sbt.Classpaths) Defaults.scala:1593
[info] Reverse dependencies:
[info]  compile:console
[info] Delegates:
[info]  compile:console::scalacOptions
[info]  compile:scalacOptions
[info]  *:console::scalacOptions
[info]  *:scalacOptions
[info]  {.}/compile:console::scalacOptions
[info]  {.}/compile:scalacOptions
[info]  {.}/*:console::scalacOptions
[info]  {.}/*:scalacOptions
[info]  */compile:console::scalacOptions
[info]  */compile:scalacOptions
[info]  */*:console::scalacOptions
[info]  */*:scalacOptions
[info] Related:
[info]  *:console::scalacOptions
[info]  compile:scalacOptions
[info]  *:scalacOptions
[info]  */*:scalacOptions
[info]  test:scalacOptions

注意:compile:console::scalacOptions是

• 由...提供 compile:scalacOptions
• *:console::scalacOptions在委托链中没有达到(这是我定义的)

我的问题是如何覆盖scalacOptions控制台的所有配置？是否可以更改授权链？

我想避免设置scalacOptions in (Compile, console)(因为它会重复(Test, console))或定义一个scalac选项的val.

Answer 1

我的问题是如何覆盖scalacOptions控制台的所有配置？

我认为我们不能给出compile:scalacOptionssbt提供的存在Defaults.唯一具有更高优先级的范围是compile:console::scalacOptions.在大多数情况下,人们不希望Compile和Test设置交叉连接,因此配置范围更高优先级我不认为是一个错误的默认值.

lazy val commonSettings = Seq(
  scalaVersion := "2.11.4",
  scalacOptions += "-Ywarn-unused-import",
  scalacOptions in (Compile, console) ~= (_ filterNot (_ == "-Ywarn-unused-import")),
  scalacOptions in (Test, console) := (scalacOptions in (Compile, console)).value
)

是否可以更改授权链？

不,这是不可能的.BuildStructure中有一个delegates函数实例,它在加载时初始化并用于所有任务.订购在Scope.delegates中完成.