anchor.diff:  };
   
   common = rec { # attributes common to both builds
  -  version = "10.3.15";
  +  version = "10.3.17";
   
     src = fetchurl {
       urls = [
         "https://downloads.mariadb.org/f/mariadb-${version}/source/mariadb-${version}.tar.gz"
         "https://downloads.mariadb.com/MariaDB/mariadb-${version}/source/mariadb-${version}.tar.gz"
       ];
  -    sha256 = "0s399nxk2z8fgdr527p64y74zwjc3gpv7psf1n2r6ksl9njr3wr7";
  +    sha256 = "15vh15az16932q42y9dxpzwxldmh0x4hvzrar3f8kblsqm7ym890";
       name   = "mariadb-${version}.tar.gz";
     };
   
  
positive.code: };
  
  client = stdenv.mkDerivation (common // {
    name = "mariadb-client-${common.version}";
  
    outputs = [ "out" "dev" "man" ];
  
  
negative.code: });
  
  everything = stdenv.mkDerivation (common // {
    pname = "mariadb";
  
    outputs = [ "out" "dev" "man" ];
  
  