# 
  proc setupRepositoryUriVars { force } { 
    # 
    # NOTE: The base URI used to build the URIs for the package file server. 
    # 
    variable baseUri; # DEFAULT: https://urn.to/r 
    variable baseUri; # DEFAULT: https://tcl.to/r 
 
    if {$force || ![info exists baseUri]} then { 
      set baseUri https://urn.to/r 
      set baseUri https://tcl.to/r 
    } 
 
    # 
    # NOTE: The URI where the package repository server may be contacted to 
    #       lookup packages.