如何解決思想IDE中有關sbt的錯誤？

Question

我在SBT的想法IDE遇到了一個奇怪的錯誤，合併策略如下，

mergeStrategy in assembly <<= (mergeStrategy in assembly) { (old) => 
    { 
    case m if m.toLowerCase.endsWith("manifest.mf") => MergeStrategy.discard 
    case m if m.startsWith("META-INF") => MergeStrategy.discard 
    case PathList("javax", "servlet", xs @ _*) => MergeStrategy.first 
    case PathList("org", "apache", xs @ _*) => MergeStrategy.first 
    case PathList("org", "jboss", xs @ _*) => MergeStrategy.first 
    case "about.html" => MergeStrategy.rename 
    case "reference.conf" => MergeStrategy.concat 
    case _ => MergeStrategy.first 
    } 
} 

這似乎很好，但遺憾的是，IDE會一個錯誤，這是

Cannot resolve reference <<= with such signature 
Type mismatch,expected:Def.Initialize[(String) => Plugin.MergeStrategy], 
actual:Def.Initialize[Any]. 

任何人都可以向我解釋這個問題，請問如何解決這個問題？

Answer 1

mergeStrategy（和<<=運算符）已棄用。改爲使用​​：

assemblyMergeStrategy in assembly := { 
    case m if m.toLowerCase.endsWith("manifest.mf") => MergeStrategy.discard 
    case m if m.startsWith("META-INF") => MergeStrategy.discard 
    case PathList("javax", "servlet", xs@_*) => MergeStrategy.first 
    case PathList("org", "apache", xs@_*) => MergeStrategy.first 
    case PathList("org", "jboss", xs@_*) => MergeStrategy.first 
    case "about.html" => MergeStrategy.rename 
    case "reference.conf" => MergeStrategy.concat 
    case s => MergeStrategy.defaultMergeStrategy(s) 
}