Comment # 6 on bug 1227304 from huakim tylyktar

(In reply to Adrian Schröter from comment #5)
> this is already supported by OBS. It restarts the build when dependencies
> are changing.

There are also error that prevent from building: 
unresolvable: nothing provides %{lua_module, nothing provides luarocks},
nothing provides devel}
The lua-module macro is provided in lua-rpm-macros package
I added lua-rpm-macros to project configuration