Re: require() relative to calling file

[Philipp Janda <siffiejoe@...>]

Am 04.02.2017 um 12:44 schröbte Dirk Laurie:
> [Summary of thread: Some people would like Lua to add the directory
> of the currently running main script automatically to the package path.
> OP admits that other ways to achieve that effect exist but claims that
> no good reason for Lua not to do so has been advanced. Several
> posters have been stressing the other ways, but Russ keeps forcing
> the issu back to "why not?" and is not impressed by the technical
> arguments advanced so far.]

I think loading a module relative to the last loaded Lua module on the 
call stack (like penlight's `require_here`) would make a good candidate 
for a new searcher (standard or via LuaRocks, I don't care). It doesn't 
have to be perfect, just good enough for some deployments. Since it 
already can be done in C or in Lua+debug API, maybe we should implement 
a proof of concept, and give the Lua community something to play around 
with.

Anyway, I also wanted to mention a new rock that appeared recently on 
LuaRocks.org, and might be of interest: lua-whereami[1], which gives you 
the path to the Lua executable, so you can at least require modules 
relative to the Lua executable on non-Windows machines, too ...


Philipp


  [1]: https://luarocks.org/modules/jprjr/whereami