scala – 无法让sbt-concat从sbt-sass或sbt-less中捆绑样式

(提供的示例项目)我无法使 sbt-concat工作,以便查找和连接由可能从预处理器任务生成的样式产生的样式表.在我的生产应用程序中,我正在尝试使用它来捆绑来自 sbt-sass的选择缩小的输出文件.它在该项目的复杂设置中不起作用,因此我创建了一个示例项目,看看我是否可以让它完全工作.它在示例项目中也不起作用.这是一个测试项目build.sbt,尝试创建几个包,几乎可以想到的所有可能性,只是为了看看它们是否有效( public Github repo,你应该能够克隆并立即复制问题)：

import com.typesafe.sbt.web.Import.WebKeys._
import com.typesafe.sbt.web.pipeline.Pipeline

name := """sbt-concat-test"""

version := "1.0-SNAPSHOT"

lazy val root = (project in file(".")).enablePlugins(PlayScala,SbtWeb)

scalaVersion := "2.11.1"

libraryDependencies ++= Seq(
  jdbc,anorm,cache,ws
)

resolvers += Resolver.sonatypeRepo("releases")

includeFilter in (Assets,LessKeys.less) := "*.less"

excludeFilter in (Assets,LessKeys.less) := "_*.less"

val myPipelineTask = taskKey[Pipeline.Stage]("Some pipeline task")

myPipelineTask := { mappings => println(mappings); mappings }

pipelineStages := Seq(myPipelineTask,concat)

Concat.groups := Seq(
  "style-group1.css" -> group(sourceDirectory.value  ** "*.css"),"style-group2.css" -> group(baseDirectory.value  ** "*.css"),"style-group3.css" -> group((sourceDirectory in Assets).value  ** "*.css"),"style-group4.css" -> group(target.value  ** "*.css"),"style-group5.css" -> group(Seq("core.css","styles/core.css","assets/styles/core.css","app/assets/styles/core.css")),"style-group6.css" -> group(Seq("lessStyle.css","ui/lessStyle.css","styles/ui/lessStyle.css","assets/styles/ui/lessStyle.css","app/assets/styles/ui/lessStyle.css")),"style-group7.css" -> group(Seq("sassStyle.css","ui/sassStyle.css","styles/ui/sassStyle.css","assets/styles/ui/sassStyle.css","app/assets/styles/ui/sassStyle.css")),"style-group8.css" -> group(Seq("**/*.css"))
)

我跑;清洁;重装;从激活器到测试的阶段.我将资产源文件复制到目标文件夹中,声明的包的结果如下：

> style-group1.css不存在
> style-group2.css包含button.css和core.css的内容
> style-group3.css包含core.css和button.css的内容
> style-group4.css不存在
> style-group5.css仅包含core.css的内容
> style-group6.css仅包含已编译的lessStyle.scss的内容
> style-group7.css仅包含已编译的sassStyle.scss的内容
> style-group8.css不存在

我不明白为什么第二和第三种情况都没有拿起预处理器生成的css文件,但是经过量身定制的第6和第7种情况.也许值得注意的是,myPipelineTask的结果显示了所有源文件的PathMappings,以及来自Sass和Less任务的派生css和sourcemaps.

Concat.groups := {
  // Determine the output names of the style files to bundle
  // This is really roundabout because sbt-concat only offers 2 ways of
  // specifying files,relative paths and using a PathFinder,and the
  // latter approach restricts itself to source files instead of output files.
  val sourceDir = (sourceDirectory in Assets).value
  val scssFiles = (sourceDir ** "*.scss").getPaths
  val scssRelativePaths = scssFiles.map(_.stripPrefix(sourceDir.getPath).stripPrefix("/"))
  val outputRelativePaths = scssRelativePaths.map(_.stripSuffix(".scss") + ".min.css")
  Seq("bundle.min.css" -> group(outputRelativePaths))
}