如何在sbt构建中跳过Scalastyle？单次构建禁用的命令行方法

Hey there! Let's break down answers to your two Scalastyle + sbt questions, tailored to how you've integrated Scalastyle with your compile task.

1. Skip Scalastyle Checks Permanently in Build Configuration #

Since you've wired compileScalastyle to your compile task, you have a couple of straightforward options to disable it long-term:

• Remove the task dependency: If your build has a line like compile in Compile := (compile in Compile).dependsOn(compileScalastyle).value, simply comment or delete that line. This breaks the link between compilation and Scalastyle checks entirely.
• Add a configurable toggle: Define a setting key to control whether Scalastyle runs, so you can flip it on/off without rewriting task logic. Update your build.sbt like this:

  lazy val skipScalastyle = settingKey[Boolean]("Toggle to skip Scalastyle checks")
  skipScalastyle := false // Default to running checks
  
  lazy val compileScalastyle = taskKey[Unit]("compileScalastyle")
  compileScalastyle := {
    if (!skipScalastyle.value) {
      scalastyle.in(Compile).toTask("").value
    }
  }
  
  // Keep your existing compile task dependency
  compile in Compile := (compile in Compile).dependsOn(compileScalastyle).value
  

  To permanently skip checks, just set skipScalastyle := true in your build.

2. Disable Scalastyle Temporarily via Command Line (Like Maven's -Dcheckstyle.skip=true) #

Scalastyle's sbt plugin doesn't include a built-in system property for this, but we can easily add one ourselves to match the Maven-style workflow:

Option 1: Use a System Property Toggle #

Update the skipScalastyle setting from the previous section to read a system property:

lazy val skipScalastyle = settingKey[Boolean]("Toggle to skip Scalastyle checks")
skipScalastyle := sys.props.get("scalastyle.skip").exists(_.toBoolean)

Now you can run sbt with the following command to skip Scalastyle for just that build:

sbt -Dscalastyle.skip=true compile

Option 2: Override the Task Directly (No Build Changes Needed) #

If you don't want to modify your build.sbt at all, you can override the compileScalastyle task directly from the command line to do nothing:

sbt "set compileScalastyle := {}" compile

Or target the underlying scalastyle task directly:

sbt "set scalastyle.in(Compile) := {}" compile

Either approach will let you skip Scalastyle checks for a single build without altering your permanent configuration.

内容的提问来源于stack exchange，提问作者Cedric Reichenbach