anchor.diff:  };
   
   client = stdenv.mkDerivation (common // {
  -  name = "mariadb-client-${common.version}";
  +  pname = "mariadb-client";
   
     outputs = [ "out" "dev" "man" ];
   
  
positive.code: });
  
  everything = stdenv.mkDerivation (common // {
    name = "mariadb-${common.version}";
  
    outputs = [ "out" "dev" "man" ];
  
  
negative.code: };
  
  common = rec { # attributes common to both builds
    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 = "15vh15az16932q42y9dxpzwxldmh0x4hvzrar3f8kblsqm7ym890";
      name   = "mariadb-${version}.tar.gz";
    };
  
  