anchor.diff: -{ stdenv, fetchgit, cmake, boost, libunwind, mariadb, libmemcached, pcre
  +{ stdenv, fetchgit, cmake, pkgconfig, boost, libunwind, mariadb, libmemcached, pcre
   , libevent, gd, curl, libxml2, icu, flex, bison, openssl, zlib, php, re2c
   , expat, libcap, oniguruma, libdwarf, libmcrypt, tbb, gperftools, glog
   , bzip2, openldap, readline, libelf, uwimap, binutils, cyrus_sasl, pam, libpng
  -, libxslt, ocaml
  +, libxslt, ocaml, freetype
   }:
   
   stdenv.mkDerivation rec {
  
positive.code:   USE_HHVM=1;
    MYSQL_INCLUDE_DIR="${mariadb}/include/mysql";
    MYSQL_DIR=mariadb;
  
    patchPhase = ''
      substituteInPlace hphp/util/generate-buildinfo.sh \
  
negative.code:   };
  
    buildInputs =
      [ cmake pkgconfig boost libunwind mariadb libmemcached pcre libevent gd curl
        libxml2 icu flex bison openssl zlib php expat libcap oniguruma
        libdwarf libmcrypt tbb gperftools bzip2 openldap readline
        libelf uwimap binutils cyrus_sasl pam glog libpng libxslt ocaml
  