#       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 

    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. 
    # 

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 

    #       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: This package requires the package repository client package. 
  # 
  package require Eagle.Package.Repository 
 
  # 
  # 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]