When using USES=lua:module or USES=lua:flavors, the port will automatically have FLAVORS filled in with the Lua versions it supports. However, it is not expected that ordinary applications (rather than Lua modules) should use this feature; most applications that embed or otherwise use Lua should simply use USES=lua.

LUA_FLAVOR is available (and must be used) to depend on the correct version of dependencies regardless of whether the port used the flavors or module parameters.

See Section 6.22, “Using Lua” for further information.