anchor.diff:      sha256 = "0wrvhyck95czhz553834i9im7ljvn8k2byakcinlji7zx43njcyp";
     };
   
  -  buildInputs = [
  -    cmake ncurses openssl zlib xz lzo lz4 bzip2 snappy
  -    pcre libxml2 boost judy bison libevent cracklib
  -  ] ++ stdenv.lib.optionals stdenv.isLinux [ jemalloc libaio systemd numactl ];
  +  prePatch = ''
  +    substituteInPlace cmake/libutils.cmake \
  +      --replace /usr/bin/libtool libtool
  +    sed -i 's,[^"]*/var/log,/var/log,g' storage/mroonga/vendor/groonga/CMakeLists.txt
  +  '';
  +
  +  nativeBuildInputs = [ cmake pkgconfig ];
  +
  +  buildInputs = [ ncurses openssl zlib pcre jemalloc libaio systemd ];
  +
  +  cmakeFlags = [
  +    "-DBUILD_CONFIG=mysql_release"
  +    "-DMANUFACTURER=NixSap"
  +    "-DDEFAULT_CHARSET=utf8"
  +    "-DDEFAULT_COLLATION=utf8_general_ci"
  +    "-DSECURITY_HARDENED=ON"
  +
  +    "-DMYSQL_UNIX_ADDR=/run/mysqld/mysqld.sock"
  +    "-DINSTALL_MYSQLSHAREDIR=share/mysql"
  +
  +    "-DWITH_ZLIB=system"
  +    "-DWITH_SSL=system"
  +    "-DWITH_PCRE=system"
  +
  +  ]
  +    ;
  +
  +  preConfigure = ''
  +    cmakeFlags="$cmakeFlags -DINSTALL_INCLUDEDIR=''${!outputDev}/include/mysql"
  +  '';
  +
  +  postInstall = ''
  +    rm "$out"/lib/*.a
  +    find "''${!outputBin}/bin" -name '*test*' -delete
  +  '';
  +
  +  passthru.mysqlVersion = "5.6";
  +};
  +
  +
  +client = stdenv.mkDerivation (common // {
  +  name = "mariadb-client-${common.version}";
  +
  +  outputs = [ "bin" "dev" "out" ];
  +
  +  propagatedBuildInputs = [ openssl zlib ]; # required from mariadb.pc
  +
  +  cmakeFlags = common.cmakeFlags ++ [
  +    "-DWITHOUT_SERVER=ON"
  +  ];
  +
  +  preConfigure = common.preConfigure + ''
  +    cmakeFlags="$cmakeFlags \
  +      -DINSTALL_BINDIR=$bin/bin -DINSTALL_SCRIPTDIR=$bin/bin \
  +      -DINSTALL_SUPPORTFILESDIR=$bin/share/mysql \
  +      -DINSTALL_DOCDIR=$bin/share/doc/mysql -DINSTALL_DOCREADMEDIR=$bin/share/doc/mysql \
  +      "
  +  '';
  +
  +  # prevent cycle; it needs to reference $dev
  +  postInstall = common.postInstall + ''
  +    moveToOutput bin/mysql_config "$dev"
  +  '';
  +
  +  enableParallelBuilding = true; # the client should be OK
  +});
  +
  +
  +everything = stdenv.mkDerivation (common // {
  +  name = "mariadb-${common.version}";
   
     patches = [
       ./MDEV-10463.patch
     ];
   
  -  cmakeFlags = [
  -    "-DBUILD_CONFIG=mysql_release"
  -    "-DDEFAULT_CHARSET=utf8"
  -    "-DDEFAULT_COLLATION=utf8_general_ci"
  -    "-DENABLED_LOCAL_INFILE=ON"
  -    "-DMYSQL_UNIX_ADDR=/run/mysqld/mysqld.sock"
  +  nativeBuildInputs = common.nativeBuildInputs ++ [ bison ];
  +
  +  buildInputs = common.buildInputs ++ [
  +    xz lzo lz4 bzip2 snappy
  +    libxml2 boost judy libevent cracklib
  +  ]
  +    ++ optionals (stdenv.isLinux && !stdenv.isArm) [ numactl ]
  +    ;
  +
  +  cmakeFlags = common.cmakeFlags ++ [
       "-DMYSQL_DATADIR=/var/lib/mysql"
       "-DINSTALL_SYSCONFDIR=etc/mysql"
       "-DINSTALL_INFODIR=share/mysql/docs"
       "-DINSTALL_MANDIR=share/man"
       "-DINSTALL_PLUGINDIR=lib/mysql/plugin"
       "-DINSTALL_SCRIPTDIR=bin"
  -    "-DINSTALL_INCLUDEDIR=include/mysql"
  -    "-DINSTALL_DOCREADMEDIR=share/mysql"
       "-DINSTALL_SUPPORTFILESDIR=share/mysql"
  -    "-DINSTALL_MYSQLSHAREDIR=share/mysql"
  -    "-DINSTALL_DOCDIR=share/mysql/docs"
  +    "-DINSTALL_DOCREADMEDIR=share/doc/mysql"
  +    "-DINSTALL_DOCDIR=share/doc/mysql"
       "-DINSTALL_SHAREDIR=share/mysql"
  +
  +    "-DENABLED_LOCAL_INFILE=ON"
       "-DWITH_READLINE=ON"
  -    "-DWITH_ZLIB=system"
  -    "-DWITH_SSL=system"
  -    "-DWITH_PCRE=system"
       "-DWITH_EXTRA_CHARSETS=complex"
       "-DWITH_EMBEDDED_SERVER=ON"
       "-DWITH_ARCHIVE_STORAGE_ENGINE=1"
  
positive.code:     "-DWITH_PARTITION_STORAGE_ENGINE=1"
      "-DWITHOUT_EXAMPLE_STORAGE_ENGINE=1"
      "-DWITHOUT_FEDERATED_STORAGE_ENGINE=1"
      "-DSECURITY_HARDENED=ON"
      "-DWITH_WSREP=ON"
    ] ++ stdenv.lib.optionals stdenv.isDarwin [
      "-DWITHOUT_OQGRAPH_STORAGE_ENGINE=1"
      "-DWITHOUT_TOKUDB=1"
      "-DCURSES_LIBRARY=${ncurses}/lib/libncurses.dylib"
    ];
  
    # fails to find lex_token.h sometimes
    enableParallelBuilding = true;
  
    outputs = [ "out" "lib" ];
  
    prePatch = ''
      substituteInPlace cmake/libutils.cmake \
        --replace /usr/bin/libtool libtool
      sed -i "s,SET(DEFAULT_MYSQL_HOME.*$,SET(DEFAULT_MYSQL_HOME /not/a/real/dir),g" CMakeLists.txt
      sed -i "s,SET(PLUGINDIR.*$,SET(PLUGINDIR $lib/lib/mysql/plugin),g" CMakeLists.txt
      sed -i 's,SET(SHAREDIR .*$,SET(SHAREDIR share/mysql),g' CMakeLists.txt
  
      sed -i "s,SET(pkgincludedir.*$,SET(pkgincludedir $lib/include),g" scripts/CMakeLists.txt
      sed -i "s,SET(pkglibdir.*$,SET(pkglibdir $lib/lib),g" scripts/CMakeLists.txt
      sed -i "s,SET(pkgplugindir.*$,SET(pkgplugindir $lib/lib/mysql/plugin),g" scripts/CMakeLists.txt
  
      sed -i "s,set(libdir.*$,SET(libdir $lib/lib),g" storage/mroonga/vendor/groonga/CMakeLists.txt
      sed -i "s,set(includedir.*$,SET(includedir $lib/include),g" storage/mroonga/vendor/groonga/CMakeLists.txt
      sed -i "/\"\$[{]CMAKE_INSTALL_PREFIX}\/\$[{]GRN_RELATIVE_PLUGINS_DIR}\"/d" storage/mroonga/vendor/groonga/CMakeLists.txt
      sed -i "s,set(GRN_PLUGINS_DIR.*$,SET(GRN_PLUGINS_DIR $lib/\$\{GRN_RELATIVE_PLUGINS_DIR}),g" storage/mroonga/vendor/groonga/CMakeLists.txt
      sed -i 's,[^"]*/var/log,/var/log,g' storage/mroonga/vendor/groonga/CMakeLists.txt
    '';
  
    postInstall = ''
      substituteInPlace $out/bin/mysql_install_db \
        --replace basedir=\"\" basedir=\"$out\"
  
      # Remove superfluous files
      rm -r $out/mysql-test $out/sql-bench $out/data # Don't need testing data
      rm $out/share/man/man1/mysql-test-run.pl.1
      rm $out/bin/rcmysql # Not needed with nixos units
      rm $out/bin/mysqlbug # Encodes a path to gcc and not really useful
      find $out/bin -name \*test\* -exec rm {} \;
  
      # Separate libs and includes into their own derivation
      mkdir -p $lib
      mv $out/lib $lib
      mv $out/include $lib
  
    ''
    + stdenv.lib.optionalString stdenv.isDarwin ''
      # Fix library rpaths
      # TODO: put this in the stdenv to prepare for wide usage of multi-output derivations
      for file in $(grep -rl $out/lib $lib); do
        install_name_tool -delete_rpath $out/lib -add_rpath $lib $file
      done
  
    '' + ''
      # Fix the mysql_config
      sed -i $out/bin/mysql_config \
        -e 's,-lz,-L${zlib}/lib -lz,g' \
        -e 's,-lssl,-L${openssl}/lib -lssl,g'
  
      # Add mysql_config to libs since configure scripts use it
      mkdir -p $lib/bin
      cp $out/bin/mysql_config $lib/bin
      sed -i "/\(execdir\|bindir\)/ s,'[^\"']*',$lib/bin,g" $lib/bin/mysql_config
  
      # Make sure to propagate lib for compatability
      mkdir -p $out/nix-support
      echo "$lib" > $out/nix-support/propagated-native-build-inputs
  
      # Don't install static libraries.
      rm $lib/lib/libmysqlclient.a $lib/lib/libmysqld.a
    '';
  
    passthru.mysqlVersion = "5.6";
  
    meta = with stdenv.lib; {
      description = "An enhanced, drop-in replacement for MySQL";
      homepage    = https://mariadb.org/;
      license     = stdenv.lib.licenses.gpl2;
      maintainers = with stdenv.lib.maintainers; [ thoughtpolice wkennington ];
      platforms   = stdenv.lib.platforms.all;
    };
  }
  
negative.code: { stdenv, fetchurl, cmake, pkgconfig, ncurses, zlib, xz, lzo, lz4, bzip2, snappy
  , openssl, pcre, boost, judy, bison, libxml2
  , libaio, libevent, groff, jemalloc, cracklib, systemd, numactl, perl
  }:
  
  with stdenv.lib;
  
  let # in mariadb # spans the whole file
  
  mariadb = everything // {
    inherit client; # libmysqlclient.so in .out, necessary headers in .dev and utils in .bin
    server = everything; # a full single-output build, including everything in `client` again
    lib = client; # compat. with the old mariadb split
  };
  
  common = rec { # attributes common to both builds
    version = "10.1.18";
  
    src = fetchurl {
  