Arch Linux

lua5.1 can't load zlib module:

$ sudo journalctl -b -u prosody
...
Jun 12 12:31:20 vps prosody[12575]: Error initializing module 'compression' on 'hiciu.org': error loading module 'zlib' from file '/usr/lib/lua/5.1/zlib.so':
...
$ lua5.1
Lua 5.1.5 Copyright (C) 1994-2012 Lua.org, PUC-Rio
> require 'zlib'
error loading module 'zlib' from file '/usr/lib/lua/5.1/zlib.so':
/usr/lib/lua/5.1/zlib.so: undefined symbol: luaL_prepbuffsize
...
$ LC_ALL=C pacman -Qi lua51-zlib
Name : lua51-zlib
Version : 0.2-4
Description : Simple streaming interface to zlib for Lua.
Architecture : x86_64
URL : http://github.com/brimworks/lua-zlib
Licenses : MIT
Groups : None
Provides : None
Depends On : zlib lua51
Optional Deps : None
Required By : None
Optional For : None
Conflicts With : lua-lzlib
Replaces : None
Installed Size : 56.00 KiB
Packager : Sergej Pupykin <pupykin.s+arch@gmail.com>
Build Date : Wed Mar 13 14:37:16 2013
Install Date : Wed Jun 12 12:42:21 2013
Install Reason : Explicitly installed
Install Script : No
Validated By : Signature

I've tried to rebuild package but with fresh package I'm getting same error. It works if I use version from git. System is up-to-date, I'm not using testing or unofficial repos.

Steps to reproduce:
1. pacman -S lua51-zlib
2. lua5.1 -l zlib

Expected:
- lua prompt.

Got:
- lua5.1: error loading module 'zlib' from file '/usr/lib/lua/5.1/zlib.so': /usr/lib/lua/5.1/zlib.so: undefined symbol: luaL_prepbuffsize