在为sbt 0.13构建插件时，重要的是scala 2.10的哪个版本的库依赖项（插件的）是针对什么构建的？
目前我的插件依赖于针对scala 2.10.2构建的库。这适用于单个构建，但是当构建（A）依赖于另一个构建（B）时，通过ProjectRef，我发现项目B中构建指令的sbt编译失败。似乎sbt正在使用2.10.2来构建指令文件，但是正在加载scala-reflect-2.10.0.jar（在Calling Scala compiler with arguments (CompilerInterface)打印到屏幕之后从sbt调试回溯中加载。）
如果我自己构建引用的项目（B），那么指令文件的构建会成功，但再次查看正在加载的jar文件时，我会看到引用了scala-2.10.2/lib/scala-reflect.jar。
失败时的错误消息是：
[error] error while loading MacroValue, Missing dependency 'bad symbolic reference. A signature in MacroValue.class refers to term annotations
[error] in package scala.reflect.internal which is not available.
[error] It may be completely missing from the current classpath, or the version on
[error] the classpath might be incompatible with the version used when compiling MacroValue.class.', required by /home/alex.wilson/.ivy2/cache/org.scala-sbt/main-settings/jars/main-settings-0.13.0.jar(sbt/std/MacroValue.class)
[error] error while loading InputEvaluated, Missing dependency 'bad symbolic reference. A signature in InputEvaluated.class refers to term annotations
[error] in package scala.reflect.internal which is not available.
[error] It may be completely missing from the current classpath, or the version on
[error] the classpath might be incompatible with the version used when compiling InputEvaluated.class.', required by /home/alex.wilson/.ivy2/cache/org.scala-sbt/main-settings/jars/main-settings-0.13.0.jar(sbt/std/InputEvaluated.class)
[error] error while loading ParserInput, Missing dependency 'bad symbolic reference. A signature in ParserInput.class refers to term annotations
[error] in package scala.reflect.internal which is not available.
[error] It may be completely missing from the current classpath, or the version on
[error] the classpath might be incompatible with the version used when compiling ParserInput.class.', required by /home/alex.wilson/.ivy2/cache/org.scala-sbt/main-settings/jars/main-settings-0.13.0.jar(sbt/std/ParserInput.class)
[error] three errors found
我可以重建我的插件，以便它依赖于根据需要构建的2.10.0库。但我不确定这是否是正确的方法并且会有所帮助。任何建议都将不胜感激。
答案 0 :(得分：2)
sbt 0.13.0需要Scala 2.10.2或更高版本。错误消息表示在2.10.2中引入了缺少的类。因此，正如您所提到的，类路径似乎包含较旧的Scala版本。通常，如果您未设置scalaVersion，则应在sbt插件的类路径中包含正确版本的Scala。