#       downloaded, i.e. because it is not required for the downloading 
  #       process itself to be functional, etc.  The package argument is 
  #       the name of the package to check. 
  # 
  proc canDownloadPackage { package } { 
    variable verboseUnknownResult 
 
    # 
    # NOTE: Since all the functionality needed by this package is built-in 
    #       to Eagle, there are no download restrictions when it is being 
    #       used. 
    # 

    #       the custom [package unknown] itself, in order to locate and 
    #       download the requested package, we must return false here to 
    #       prevent needless recursion. 
    # 
    if {[lsearch -exact [list http tls] $package] != -1} then { 
      # 
      # NOTE: Emit a diagnostic message as this is a relatively rare and 
      #       fairly serious issue. 
      # 
      if {$verboseUnknownResult} then { 
        pkgLog [appendArgs \ 
            "cannot download package \"" $package \ 
            "\", because it is needed in order to enable downloads"] 
      } 
 
      return false 
    } 
 
    # 
    # NOTE: Currently, all other packages, including Garuda, are legal to