How to add `~/.config/nvim' into runtime path for Lua?

Question

In my init.lua I call:

require('plugins')
require('theme')

This works when editing in the ~/.config/nvim directory, where init.lua, plugins.lua and theme.lua are located.

But when I run vim outside of this directory, I get the following error:

E5113: Error while calling lua chunk: /home/miki/.config/nvim/init.lua:5: module 'plugins' n
ot found:
        no field package.preload['plugins']
        no file './plugins.lua'
        no file '/usr/share/luajit-2.1.0-beta3/plugins.lua'
        no file '/usr/local/share/lua/5.1/plugins.lua'
        no file '/usr/local/share/lua/5.1/plugins/init.lua'
        no file '/usr/share/lua/5.1/plugins.lua'
        no file '/usr/share/lua/5.1/plugins/init.lua'
        no file './plugins.so'
        no file '/usr/local/lib/lua/5.1/plugins.so'
        no file '/usr/lib/x86_64-linux-gnu/lua/5.1/plugins.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'

How do I add ~/.config/nvim to the places Lua looks for modules?

I also tried to put these modules into ~/.config/nvim/lua folder, but then they were not found even in the init.lua.

Answer 1

Removing the following lines from my init.lua

vim.cmd [[set runtimepath=$VIMRUNTIME]]
vim.cmd [[set packpath=~/.local/share/nvim/site]]

and placing all my .lua modules (except init.lua) into ~/.config/nvim/lua fixed the issue.