scala – sbt子项目的项目目录

sbt子项目有自己的项目目录吗？或者只有根项目可以使用. scala帮助文件来构建目录？以下是我目前的构建结构. /my-project/sub-projects/sub-project-1/build.sbt无法访问/my-project/sub-projects/sub-project-1/SubProjectHelper.scala中定义的对象.

/my-project
  build.sbt
  /projects
    Helper.scala
  sub-projects
    sub-project-1
      build.sbt
      /projects
        SubProjectHelper.scala

更新：
sub-project-1 / build.sbt中的以下sbt定义

lazy val localhost = (project in file(".")).settings (
    name := """localhost""",version := Common.version,scalaVersion := Common.scalaVersion,libraryDependencies ++= Common.dependencies,libraryDependencies ++= Localhost.dependencies
)

失败,出现以下错误

libraryDependencies ++= Localhost.dependencies
                            ^
sbt.compiler.EvalException: Type error in expression
    at sbt.compiler.Eval.checkError(Eval.scala:384)
    at sbt.compiler.Eval.compileAndLoad(Eval.scala:183)
    at sbt.compiler.Eval.evalCommon(Eval.scala:152)
    at sbt.compiler.Eval.evalDefinitions(Eval.scala:122)
    at sbt.EvaluateConfigurations$.evaluateDefinitions(EvaluateConfigurations.scala:271)
    at sbt.EvaluateConfigurations$.evaluateSbtFile(EvaluateConfigurations.scala:109)
    at sbt.Load$.sbt$Load$$loadSettingsFile$1(Load.scala:712)

Common在/my-project/projects/Common.scala中定义,没有任何问题.但是localhost是在/my-project/sub-projects/sub-project-1/projects/SubProjectHelper.scala中定义的,未在子项目-1 build.sbt中正确解析