/**
   * Static cache for zinc compilers.
   */
  val compilerCache = Cache[Setup, Compiler](Setup.Defaults.compilerCacheLimit)

  /**
   * Static cache for resident scala compilers.
   */
  val residentCache: GlobalsCache = createResidentCache(Setup.Defaults.residentCacheLimit)

  /**
   * Static cache for compile analyses.  Values must be Options because in get() we don't yet know if, on
   * a cache miss, the underlying file will yield a valid Analysis.
   */
  val analysisCache = Cache[FileFPrint, Option[(Analysis, CompileSetup)]](Setup.Defaults.analysisCacheLimit)