a.lua

local debug = require('debug')

p('a:', __file__, __path__)
p(debug.getinfo(1, "Slf"))


local b = require('./b')
p('add:', b.add(1, 1))

lev.exit()

b.lua

local debug = require('debug')

p('b:', __file__, __path__)
p(debug.getinfo(1, "Slf"))

return {
  add = function (a, b)
    return a + b
  end
}

log.txt

RetinaMBP:3780323 kazupon$ ~/Projects/opensource/lev/build/lev a.lua 
*lev core started: 52313
"a:"    "a.lua" "."
{
    linedefined = 0,
    currentline = 4,
    lastlinedefined = 11,
    source = "@a.lua",
    what = "main",
    func = function: 0x041d42e8,
    short_src = "a.lua"
}
"b:"    ".///b.lua"     "."
{
    linedefined = 0,
    currentline = 4,
    lastlinedefined = 11,
    source = "@.///b.lua",
    what = "main",
    func = function: 0x041d7aa8,
    short_src = ".///b.lua"
}
"add:"  2
*lev: a core has exited with status 0, signal 0