Explaination of Luban License
Luban license 1.0 has exactly the same term as PHP license 3.0. The I use the same license as PHP because, first it is opensource.org certified, second that is one of the few licenses I can read and understand.
Still I would like to make my intention even more clear here. What Luban License says is the following:
1. All your code written in Luban language is completely yours.
2. Free to change and distribute Luban package as far as,
a. you don't call the changed package Luban or anything similar
b. plus, inside your package, you publicly acknowledge your package is based on Luban