My custom SBT Shell prompt

global.sbt

// Requires that sbt-git plugin is enabled. Make sure you have this plugin
// added to your ~/.sbt/0.13/plugins/plugins.sbt file:
// addSbtPlugin("com.typesafe.sbt" % "sbt-git" % "0.8.5")

shellPrompt := { state =>
  object NoOpSbtLogger extends Logger {
    def trace(t: => Throwable): Unit = {}
    def success(message: => String): Unit = {}
    def log(level: Level.Value, message: => String): Unit = {}
  }

  def textColor(color: Int)      = { s"\033[38;5;${color}m" }
  def backgroundColor(color:Int) = { s"\033[48;5;${color}m" }
  def textBold                   = { s"\033[1m" }
  def reset                      = { s"\033[0m" }

  def formatText(str: String, bold: Boolean = false)(fg: Int, bg: Int) = {
    s"${if (bold) textBold else ""}${textColor(fg)}${backgroundColor(bg)}${str}${reset}"
  }

  val red = 1
  val green  = 2
  val white  = 15
  val black  = 16
  val blue   = 39
  val orange = 166


  val time = java.time.LocalTime.now().toString.takeWhile(_ != '.')
  val home = sys.env.getOrElse("HOME", default = "")
  val currDir = baseDirectory.value.getAbsolutePath.replaceAll(home, "~")

  import com.typesafe.sbt.SbtGit._

  val prjExtract = Project.extract(state)

  val dirtyGit = formatText("✘")(red, black)
  val cleanGit = formatText("✔")(green, black)
  val branch = prjExtract.get(GitKeys.gitCurrentBranch)

  // The below lines are unsafe and will fail if the git repository hasn't seen any commits yet...
  val (_, runner) = prjExtract.runTask(GitKeys.gitRunner, state)
  val maybeStatus = scala.util.Try {
    runner("diff-index", "HEAD", "--")(prjExtract.get(baseDirectory), NoOpSbtLogger)
  }.toOption

  val maybeGit = maybeStatus.map(s => !s.trim.isEmpty)

  formatText("sbt", true)(white, 88) +
  " [" + formatText(time)(blue, black) + "]" +
  " [" + formatText(name.value)(green, black) +
  maybeGit.map(_ => ":"  + formatText(branch)(blue, black)).getOrElse("") + "]" +
  maybeGit.map(isDirty => s"${if (isDirty) dirtyGit else cleanGit}").getOrElse("") +
  " λ "
}

import com.softwaremill.clippy.ClippySbtPlugin._
clippyColorsEnabled := true

libraryDependencies += "com.lihaoyi" % "ammonite" % "0.8.2" % "test" cross CrossVersion.full

initialCommands in (Test, console) := """ammonite.Main().run()"""

plugins.sbt

addSbtPlugin("io.get-coursier"          %% "sbt-coursier"               % "1.0.0-RC1")
addSbtPlugin("com.softwaremill.clippy"  %  "plugin-sbt"                 % "0.5.2")
addSbtPlugin("net.vonbuchholtz"         %  "sbt-dependency-check"       % "0.1.4")
addSbtPlugin("org.ensime"               %  "sbt-ensime"                 % "1.12.8")
addSbtPlugin("com.gilt"                 %  "sbt-dependency-graph-sugar" % "0.8.2")
addSbtPlugin("com.eed3si9n"             %  "sbt-dirty-money"            % "0.1.0")
addSbtPlugin("com.typesafe.sbt"         %  "sbt-git"                    % "0.9.2")