#
  # NOTE: This procedure sets up the default values for all URN configuration
  #       parameters used by the package downloader client.  If the force
  #       argument is non-zero, any existing values will be overwritten and
  #       set back to their default values.
  #
  proc setupDownloadUrnVars { force } {
    #
    # NOTE: The URN, relative to the base URI, where the Package Signing Key
    #       may be downloaded.
    #
    variable openPgpKeyUrn; # DEFAULT: pkg_key

    if {$force || ![info exists openPgpKeyUrn]} then {
      set openPgpKeyUrn pkg_key
    }

    #
    # NOTE: The URN, relative to the base URI, where a login request may
    #       be sent.
    #
    variable loginUrn; # DEFAULT: pkgd_login

    if {$force || ![info exists loginUrn]} then {

    # NOTE: The base URI used to build the URIs for the package file server.
    #
    variable baseUri; # DEFAULT: https://urn.to/r

    if {$force || ![info exists baseUri]} then {
      set baseUri https://urn.to/r
    }

    #
    # NOTE: The URI where the Package Signing Key may be downloaded.  This
    #       should return a payload containing the OpenPGP key data.
    #
    variable openPgpKeyUri; # DEFAULT: ${baseUri}/${openPgpKeyUrn}

    if {$force || ![info exists openPgpKeyUri]} then {
      set openPgpKeyUri {${baseUri}/${openPgpKeyUrn}}
    }

    #
    # NOTE: The URI where a login request may be sent.  This should return a
    #       payload containing the necessary HTTP(S) cookie information.
    #
    variable loginUri; # DEFAULT: ${baseUri}/${loginUrn}?...

}

set dir $pkgd(savedDir); unset -nocomplain pkgd
    }]]

    return ""
  }

  #
  # NOTE: This procedure attempts to download the Package Signing Key from
  #       the remote server and save it to a local file.  This procedure may
  #       raise script errors.  The fileName argument is the name of the file
  #       where the downloaded data should be written.  This procedure is only
  #       intended to be used from the "pkgr_setup.eagle" tool script and may
  #       go away in later versions of this package.
  #
  # <internal>
  proc downloadAndSaveOpenPgpKeyFile { fileName } {
    variable baseUri
    variable openPgpKeyUri
    variable openPgpKeyUrn

    #
    # NOTE: First, build the final URI to download from the remote package
    #       repository.
    #
    set uri [subst $openPgpKeyUri]

    #
    # NOTE: Then, in one step, download the file from the package file
    #       server and write it to the specified local file.
    #
    downloadOneUriToFile $fileName $uri false
  }

  #
  # NOTE: This procedure returns non-zero if the specified file seems to be
  #       an OpenPGP signature file.  The fileName argument is the name of
  #       the file to check, which may or may not exist.  The nameOnly
  #       argument should be non-zero to ignore the contents of the file.
  #

    #
    # NOTE: Always return the list of directories that were actually added
    #       to the auto-path, if any.
    #
    return $downloadDirectories
  }

  #
  # NOTE: This package requires the package repository client package.
  #
  package require Eagle.Package.Repository

  #
  # NOTE: This package requires that support for namespaces, which is an
  #       optional feature of Eagle, must be enabled.
  #
  if {[isEagle] && ![namespace enable]} then {
    error "namespaces must be enabled for this package"
  }






  #
  # NOTE: Attempt to read optional settings file now.  This may override
  #       one or more of the variable setup in the next step.
  #
  ::PackageRepository::maybeReadSettingsFile [info script]

  #