anchor.diff:      "ftp://ftp.funet.fi/pub/mirrors/ftp.debian.org/debian/"
     ];
   
  -  # Ubuntu.
  -  ubuntu = [
  -    "https://nl.archive.ubuntu.com/ubuntu/"
  -    "https://old-releases.ubuntu.com/ubuntu/"
  -    "https://mirrors.edge.kernel.org/ubuntu/"
  -    "http://de.archive.ubuntu.com/ubuntu/"
  -    "http://archive.ubuntu.com/ubuntu/"
  -  ];
  -
  -  # Fedora (please only add full mirrors that carry old Fedora distributions as well).
  -  # See: https://mirrors.fedoraproject.org/publiclist (but not all carry old content).
  +  # Fedora
  +  # Please add only full mirrors that carry old Fedora distributions as well
  +  # See: https://mirrors.fedoraproject.org/publiclist (but not all carry old content)
     fedora = [
       "https://archives.fedoraproject.org/pub/fedora/"
       "https://fedora.osuosl.org/"
  
positive.code:     "https://ftp.funet.fi/pub/mirrors/ftp.kde.org/pub/kde/"
    ];
  
    # Gentoo files.
    gentoo = [
      "https://ftp.snt.utwente.nl/pub/os/linux/gentoo/"
      "https://distfiles.gentoo.org/"
      "https://mirrors.kernel.org/gentoo/"
    ];
  
    savannah = [
      # Mirrors from https://download-mirror.savannah.gnu.org/releases/00_MIRRORS.html
      "https://mirror.easyname.at/nongnu/"
  
negative.code:     "ftp://gcc.gnu.org/pub/gcc/"
    ];
  
    # GNOME
    gnome = [
      # This one redirects to some mirror closeby, so it should be all you need
      "https://download.gnome.org/"
  
      "https://fr2.rpmfind.net/linux/gnome.org/"
      "https://ftp.acc.umu.se/pub/GNOME/"
      "https://ftp.belnet.be/mirror/ftp.gnome.org/"
      "ftp://ftp.cse.buffalo.edu/pub/Gnome/"
      "ftp://ftp.nara.wide.ad.jp/pub/X11/GNOME/"
    ];
  
    # GNU (https://www.gnu.org/prep/ftp.html)
    gnu = [
      # This one redirects to a (supposedly) nearby and (supposedly) up-to-date
      # mirror
      "https://ftpmirror.gnu.org/"
  
      "https://ftp.nluug.nl/pub/gnu/"
      "https://mirrors.kernel.org/gnu/"
      "https://mirror.ibcp.fr/pub/gnu/"
      "https://mirror.dogado.de/gnu/"
      "https://mirror.tochlab.net/pub/gnu/"
  
      # This one is the master repository, and thus it's always up-to-date
      "https://ftp.gnu.org/pub/gnu/"
  
      "ftp://ftp.funet.fi/pub/mirrors/ftp.gnu.org/gnu/"
    ];
  
    # GnuPG
    gnupg = [
      "https://gnupg.org/ftp/gcrypt/"
      "https://mirrors.dotsrc.org/gcrypt/"
  