anchor.diff:    apache = [
       "https://www-eu.apache.org/dist/"
       "https://ftp.wayne.edu/apache/"
  -    "http://ftp.tudelft.nl/apache/"
       "https://www.apache.org/dist/"
       "https://archive.apache.org/dist/" # fallback for old releases
  -    "ftp://ftp.funet.fi/pub/mirrors/apache.org/"
       "https://apache.cs.uu.nl/"
       "https://apache.cs.utah.edu/"
  +    "http://ftp.tudelft.nl/apache/"
  +    "ftp://ftp.funet.fi/pub/mirrors/apache.org/"
     ];
   
     postgresql = [
  
positive.code:     # http://bioconductor.fmrp.usp.br/
      # http://mirror.aarnet.edu.au/pub/bioconductor/
      # http://watson.nci.nih.gov/bioc_mirror/
      "http://bioconductor.jp/packages/"
      "https://bioconductor.statistik.tu-dortmund.de/packages/"
      "https://mirrors.ustc.edu.cn/bioc/"
    ];
  
    # Hackage mirrors
  
negative.code:     "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
    ];
  
    # CPAN mirrors.
  