gistfile1.lua

require 'lanes'

function sqr()
    print(5*5)
end

function middleman()
    sqr()
end

gen = lanes.gen({globals = _G}, middleman)

print(gen()[1])



OUTPUT:
tc@box:~$ lua lanestrouble.lua 
lua: lanestrouble.lua:4: attempt to call global 'print' (a nil value)
stack traceback:
        [C]: in function 'error'
        ./lanes.lua:190: in function <./lanes.lua:136>
        lanestrouble.lua:13: in main chunk
        [C]: ?
threading.c 399: pthread_cond_destroy(ref) failed, 16 EBUSY
Aborted
tc@box:~$