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Adding scala -compiler.jar as a runtime dependency

I use sbt and its Proguard plugin to create an executable jar for my program. However, my program relies on scala-compiler.jarruntime to do compilation. I can't seem to get scala-compiler.jarinto my last jar. This page contains very similar information, but I cannot get it to work from start to finish. Any suggestions?

EDIT: This is the closest I got:

override def proguardOptions = List(
  "-dontshrink -dontoptimize -dontobfuscate -dontpreverify -dontnote " +
  "-ignorewarnings",
  proguardKeepAllScala
)
override def proguardInJars =
  Path.fromFile(scalaLibraryJar) +++
  Path.fromFile(FileUtilities.scalaCompilerJar) +++
  super.proguardInJars

This includes the compiler jar in minvar proguard, but on startup I still get:

Exception: java.lang.NoClassDefFoundError: scala/tools/nsc/settings/Scala Settings
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1 answer

, , sbt:

//proguard                                                                    
override def proguardOptions = List(
  "-dontshrink -dontoptimize -dontobfuscate -dontpreverify -dontnote " +
  "-ignorewarnings",
  proguardKeepAllScala
)

val cur =  new File(".").getAbsolutePath
override def proguardInJars =
  Path.fromFile(scalaLibraryJar) +++
  Path.fromFile(
    new File(cur, "project/boot/scala-" + crossScalaVersionString +
             "/lib/scala-compiler.jar")) +++
  super.proguardInJars

FileUtilities.scalaCompiler Jar, 2.7.7 , sbt, scala.

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