SBT - 非法動態參考

Question

下面是用我的build.sbt裏面添加額外的測試資源目錄的代碼，它工作正常： -

unmanagedSourceDirectories in Test ++= Seq ((baseDirectory(_/"abc")).value, (baseDirectory(_/"xyz")).value) 

但是，下面的版本給非法動態誤差

val folderList = Seq("abc", "xyz") 
unmanagedSourceDirectories in Test ++= folderList map { src => (baseDirectory(_/src)).value } 

至於建議here，我試圖動態任務還沒有運氣： -

val folderList = Seq("abc", "xyz") 
val dynamic = Def.taskDyn{ 
    Def.task{ 
    folderList 
    } 
} 
unmanagedSourceDirectories in Test ++= dynamic.value map { src => (baseDirectory(_/src)).value } 

請提出正確的語法。

Answer 1

您不需要爲此用例定義動態任務。只需使用.value宏：

val folderList = Seq("abc", "xyz") 
unmanagedSourceDirectories in Test ++= 
    folderList.map { src => (baseDirectory in Test).value/src }