dev-haskell/hslua/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<herd>haskell</herd>
	<use>
		<flag name="system-lua">Use the system-wide lua instead of the bundled copy.</flag>
	</use>
	<longdescription>
		The Scripting.Lua module is a wrapper of Lua language interpreter
		as described in www.lua.org.
		
		The package is standalone: full Lua interpreter version 5.1.4
		is distributed in this package as well.
	</longdescription>
	<use>
		<flag name="system-lua">Use the system-wide lua instead of the bundled copy.</flag>
		<flag name="apicheck">Compile Lua with -DLUA_USE_APICHECK..</flag>
	</use>
</pkgmetadata>