Reload `init.lua` and all `require`d scripts

Neovim
11

That is because in lua once a module is required it is then cached for the entirety of the runtime, so sourcing just $MYVIMRC isn’t enough to reload all the modules that are required inside your init.lua.

What you need to do is set those loaded modules to nil and then finally source your init.lua, and on the next re-source it will re-require the file instead of the cached one.

I stole this code from plenary and simplified it for my use case but the concept is the same. You want to make sure all your lua files are scoped within a namespace, what this means is to have all your lua files inside lua/<namespace> where (in my case I use my username: cnull) is the name of the directory, and then match all the modules that start with the namespace and set them to nil. Below is the code along with a keymap and command you can set. Just replace the pattern in name:match() from cnull to your namespace.

function _G.ReloadConfig()
  for name,_ in pairs(package.loaded) do
    if name:match('^cnull') then
      package.loaded[name] = nil
    end
  end

  dofile(vim.env.MYVIMRC)
end

vim.api.nvim_set_keymap('n', '<Leader>vs', '<Cmd>lua ReloadConfig()<CR>', { silent = true, noremap = true })
vim.cmd('command! ReloadConfig lua ReloadConfig()')

If you want to use plenary to reload instead, then you just need to require it and give it the modulename aka your namespace/directory name.

require("plenary.reload").reload_module("cnull") -- replace with your own namespace
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