Separate groups of scripts

[Shmuel Zeigerman <shmuz@...>]

There is a Lua program that allows users to add their scripts in such a 
way that them will be callable via the program's menu (or via hot keys).

Every user usually organizes his scripts and modules in a separate 
subdirectory (subtree, in fact) of the main Lua program, and adds this 
subdirectory in front of package.path. This is not elegant, but 
moreover, is not safe, since different users may have identically named 
modules.

I thought of a solution, where the program assigns each user (that is, 
each group of scripts) a separate environment and calls those scripts 
within that environment. But AFAIK, there is no way to have a 
package.path per an environment, there is only one package.path.

There is one simple solution: the program modifies package.path every 
time it is about to run a user script. But though it would work, it 
looks inelegant in comparison to imaginary "package.path per environment".

Are there some other solutions?

--
Shmuel