如何覆盖console的ScalaOptions？

根据以下讨论，覆盖SBT控制台的

scalacOptions

对我不起作用：

my

build.sbt

的内容如下：

    lazy val commonScalacOptions = Seq(
      "-deprecation",
      "-encoding", "UTF-8",
      "-feature",
      "-unchecked",
      "-Xfatal-warnings",
      "-Xlint:-missing-interpolator,_",
      "-Yinline-warnings",
      "-Yno-adapted-args",
      "-Ywarn-dead-code",
      "-Ywarn-numeric-widen",
      "-Ywarn-value-discard",
      "-Ywarn-unused-import",
      "-language:existentials",
      "-language:experimental.macros",
      "-language:implicitConversions",
      "-language:higherKinds",
      "-Xfuture")

    lazy val commonSettings = Seq(
      scalaVersion := "2.11.11",
      scalacOptions ++= commonScalacOptions,
      scalacOptions in (Compile, console)  := (scalacOptions in (Compile, console)).value filterNot ("-Ywarn-unused-import" == _),
      scalacOptions in (Test, console)     := (scalacOptions in (Compile, console)).value)

    lazy val root = Project("brontosaurus-rex", file("." + "brontosaurus-rex")).in(file("."))
      .settings(commonSettings: _*)

当我运行SBT会话时，我可以看到

-Ywarn unused imports

选项不是

compile:console:：scalacOptions

    > show compile:console::scalacOptions
    [info] * -deprecation
    [info] * -encoding
    [info] * UTF-8
    [info] * -feature
    [info] * -unchecked
    [info] * -Xfatal-warnings
    [info] * -Xlint:-missing-interpolator,_
    [info] * -Yinline-warnings
    [info] * -Yno-adapted-args
    [info] * -Ywarn-dead-code
    [info] * -Ywarn-numeric-widen
    [info] * -Ywarn-value-discard
    [info] * -language:existentials
    [info] * -language:experimental.macros
    [info] * -language:implicitConversions
    [info] * -language:higherKinds
    [info] * -Xfuture

但是，尝试在我的一个源代码文件中使用未使用的导入运行

控制台

，会导致意外错误：

    > console
    [info] Compiling 1 Scala source to [PROJECT_DIR]/brontosaurus-rex/target/scala-2.11/classes...
    [error] [PROJECT_DIR]/brontosaurus-rex/src/main/scala/com/dinosaurs/BrontosaurusRex.scala:3: Unused import
    [error] import scala.util.matching.Regex
    [error]                            ^
    [error] one error found
    [error] (compile:compileIncremental) Compilation failed
    [error] Total time: 0 s, completed May 21, 2017 7:45:53 PM

错误似乎来自

compile:compileIncremental

。当我显示

compile:compileIncremental:：scalacOptions

的内容时，我看到了我试图过滤掉的选项：

    > show compile:compileIncremental::scalacOptions
    [info] * -deprecation
    [info] * -encoding
    [info] * UTF-8
    [info] * -feature
    [info] * -unchecked
    [info] * -Xfatal-warnings
    [info] * -Xlint:-missing-interpolator,_
    [info] * -Yinline-warnings
    [info] * -Yno-adapted-args
    [info] * -Ywarn-dead-code
    [info] * -Ywarn-numeric-widen
    [info] * -Ywarn-value-discard
    [info] * -Ywarn-unused-import
    [info] * -language:existentials
    [info] * -language:experimental.macros
    [info] * -language:implicitConversions
    [info] * -language:higherKinds
    [info] * -Xfuture

现在，如果我检查上述内容，它似乎是由

compile:scalacOptions

提供的。我感到困惑的是，为什么在运行

console

命令时没有使用

compile:console:：scalacOptions

中的编译器选项

---

我希望能够为

console

运行一组不那么严格的编译器选项，这种方式看起来相当简单。然而，我很难理解为什么现有的解决方案不再有效。有人能帮我把话说清楚吗？

首先，

scalacOptions在（编译，控制台）

这意味着将

scalacOptions

设置为编译scala，您在控制台中输入

---

由于您的编译错误，这是由于在您转到Scala控制台之前，编译器将首先尝试编译当前项目，并且由于您已为编译设置了

Scala选项

，因此，因此，这个错误已经发生了。

在SBT 1.3.2中，我这边的工作如下：

  val unusedImports = "-Ywarn-unused:imports"
  ...
  scalacOptions ++= Seq(
    unusedImports,
    "-Yrangepos",
    "-Ywarn-unused:privates"
  ),
  Compile / console / scalacOptions := (Compile / scalacOptions).value filterNot (_ eq unusedImports)

---

啊，谢谢你的澄清！因此，由于

console

调用了标准的

compile:scalacOptions

，因此无法让它们与直接调用

compile

时使用的选项不同。我想在这种情况下我想要的是一个更轻的

risk:compile

或类似的东西，这样

risk:console

就可以启动一个控制台会话，使用比

console

更严格的编译器选项。