anchor.diff:      sed -i 's/-mariadb/-mysql/' "$out"/bin/galera_new_cluster
     '';
   
  +  # perlPackages.DBDmysql is broken on darwin
  +  postFixup = optionalString (!stdenv.isDarwin) ''
  +    wrapProgram $out/bin/mytop --set PATH ${less}/bin/less
  +  '';
  +
     CXXFLAGS = optionalString stdenv.isi686 "-fpermissive";
   });
   
  
positive.code:     cmakeFlags="$cmakeFlags \
        -DINSTALL_SHAREDIR=$dev/share/mysql
        -DINSTALL_SUPPORTFILESDIR=$dev/share/mysql"
    '';
  
    postInstall = ''
  
negative.code: let # in mariadb # spans the whole file
  
  libExt = stdenv.hostPlatform.extensions.sharedLibrary;
  
  mytopEnv = perl.withPackages (p: with p; [ DataDumper DBDmysql DBI TermReadKey ]);
  
  mariadb = everything // {
    inherit client; # libmysqlclient.so in .out, necessary headers in .dev and utils in .bin
  