anchor.diff:  {
   
  -  # Content-addressable Nix mirrors.
  +  # Content-addressable Nix mirrors
     hashedMirrors = [
       "https://tarballs.nixos.org"
     ];
  
positive.code:     "https://backpan.perl.org/"  # for old releases
    ];
  
    # CentOS.
    centos = [
      # For old releases
      "https://vault.centos.org/"
  
negative.code:     "http://www.ring.gr.jp/pub/net/"
    ];
  
    # ImageMagick mirrors, see https://www.imagemagick.org/script/mirror.php
    imagemagick = [
      "https://www.imagemagick.org/download/"
      "https://mirror.checkdomain.de/imagemagick/"
      "https://ftp.nluug.nl/ImageMagick/"
      "https://ftp.sunet.se/mirror/imagemagick.org/ftp/"
      "ftp://ftp.sunet.se/mirror/imagemagick.org/ftp/" # also contains older versions removed from most mirrors
    ];
  
    # Mirrors from https://download.kde.org/ls-lR.mirrorlist
  