anchor.diff:      "ftp://ftp.imagemagick.org/pub/ImageMagick/"
       "http://ftp.fifi.org/ImageMagick/"
       "ftp://ftp.fifi.org/ImageMagick/"
  -    "http://imagemagick.mirrorcatalogs.com/"
  -    "ftp://imagemagick.mirrorcatalogs.com/imagemagick"
     ];
   
     # CPAN mirrors.
  
positive.code:   gnupg = [
      "https://gnupg.org/ftp/gcrypt/"
      "http://www.ring.gr.jp/pub/net/"
      "http://gd.tuwien.ac.at/privacy/"
      "http://mirrors.dotsrc.org/gcrypt/"
      "http://ftp.heanet.ie/mirrors/ftp.gnupg.org/gcrypt/"
      "http://www.mirrorservice.org/sites/ftp.gnupg.org/gcrypt/"
  
negative.code:     "https://mirror.yandex.ru/mirrors/sage.math.washington.edu/spkg/upstream/"
  
      # Australia
      "http://mirror.aarnet.edu.au/pub/sage/spkg/upstream/"
  
      # Europe
      "http://sage.mirror.garr.it/mirrors/sage/spkg/upstream/"
      "http://mirror.switch.ch/mirror/sagemath/spkg/upstream/"
      "http://mirrors.fe.up.pt/pub/sage/spkg/upstream/"
      "http://www-ftp.lip6.fr/pub/math/sagemath/spkg/upstream/"
  