{ stdenv, fetchurl, libidn, openssl, makeWrapper, fetchhg
, lua5, luasocket, luasec, luaexpat, luafilesystem, luabitop, luaevent ? null, luadbi ? null
, withLibevent ? true, withZlib ? true, withDBI ? true
, withCommunityModules ? [], extraLibs ? [], extraModules ? []
}:

assert withLibevent -> luaevent != null;
assert withDBI -> luadbi != null;

with stdenv.lib;

let
  libs             = [ luasocket luasec luaexpat luafilesystem luabitop ]
                     ++ optional withLibevent luaevent
                     ++ optional withZlib luazlib
                     ++ extraLibs;
  getPath          = lib : type : "${lib}/lib/lua/${lua5.luaversion}/?.${type};${lib}/share/lua/${lua5.luaversion}/?.${type}";
  getLuaPath       = lib : getPath lib "lua";
  getLuaCPath      = lib : getPath lib "so";
  copyModule       = name : "cp -rv $communityModules/${name} $out/lib/prosody/modules/";
  copyExtraModule  = path: "n=0; for i in ${path}/*; do n=1; done; if [[ $n -gt 0 ]]; then cp -rv ${path}/* $out/lib/prosody/modules/; fi";
  luaPath          = concatStringsSep ";" (map getLuaPath  libs);
  luaCPath         = concatStringsSep ";" (map getLuaCPath libs);
  copyModules      = concatStringsSep ";" (map copyModule  withCommunityModules);
  copyExtraModules = concatStringsSep ";" (map copyExtraModule extraModules);
in

stdenv.mkDerivation rec {
  version = "0.11.3";
  pname = "prosody";

  src = fetchurl {
    url = "http://prosody.im/downloads/source/${name}.tar.gz";
    sha256 = "11xz4milv2962qf75vrdwsvd8sy2332nf69202rmvz5989pvvnng";
  };

  communityModules = fetchhg {
    url = "https://hg.prosody.im/prosody-modules/";
    rev = "b54e98d5c4a1";
    sha256 = "0bzn92j48krb2zhp9gn5bbn5sg0qv15j5lpxfszwqdln3lpmrvzg";
  };

  buildInputs = [ lua5 luasocket luasec luaexpat luabitop libidn openssl makeWrapper ]
                ++ optional withLibevent luaevent
                ++ optional withDBI luadbi;

  configureFlags = [
    "--ostype=linux"
    "--with-lua-include=${lua5}/include"
    "--with-lua=${lua5}"
  ];

  postInstall = ''
      ${copyModules}
      ${copyExtraModules}
      wrapProgram $out/bin/prosody \
        --set LUA_PATH '${luaPath};' \
        --set LUA_CPATH '${luaCPath};'
      wrapProgram $out/bin/prosodyctl \
        --add-flags '--config "/etc/prosody/prosody.cfg.lua"' \
        --set LUA_PATH '${luaPath};' \
        --set LUA_CPATH '${luaCPath};'
    '';

  passthru.communityModules = withCommunityModules;

  meta = {
    description = "Open-source XMPP application server written in Lua";
    license = licenses.mit;
    homepage = http://www.prosody.im;
    platforms = platforms.linux;
    maintainers = [];
  };
}