lua-users wiki: Package Path (original) (raw)

When you type

whatever = require "whatever"

Lua tries to find a package named whatever in many places, mostly having whatever somewhere in their names. If none of these is found, Lua gives an error message listing them all, something like

stdin:1: module 'whatever' not found: no field package.preload['whatever'] no file '/usr/local/share/lua/5.2/whatever.lua' no file '/usr/local/share/lua/5.2/whatever/init.lua' no file '/usr/local/lib/lua/5.2/whatever.lua' no file '/usr/local/lib/lua/5.2/whatever/init.lua' no file './whatever.lua' no file '/usr/local/lib/lua/5.2/whatever.so' no file '/usr/local/lib/lua/5.2/loadall.so' no file './whatever.so' stack traceback: [C]: in function 'require' stdin:1: in main chunk [C]: in ?

A schematic representation of that list is kept in the variable package.path. For the above list, that variable contains

/usr/local/share/lua/5.2/?.lua;/usr/local/share/lua/5.2/?/init.lua;/usr/local/lib/lua/5.2/?.lua;/usr/local/lib/lua/5.2/?/init.lua;./?.lua

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Last edited February 23, 2013 10:21 am GMT (diff)