Embeddable Lua module system

[hrsh7th]

What?
I want to embed some of my own Lua module for plugins.
For example, The Vim script has https://github.com/vim-jp/vital.vim that is easy to embed custom module to other plugins.

Why?
I want to try and error when I create some of the modules.
But currently, the neovim community's approach is hard to apply breaking changes.
For example, I think plenary.nvim is being hard to apply breaking change.

Potential existing implementations:
https://github.com/vim-jp/vital.vim is the ideal solution, I think.

Potential pitfalls:
Probably, it will make the users are being to do Reinventing the wheel but Lua plugin ecosystem will be grown, I think.

[wbthomason]

I'm not sure if it serves your purpose (e.g. as it requires using packer), but packer.nvim now supports Luarocks dependencies, which helps plugin authors rely on existing modules (or write and publish their own for reuse).