https://github.com/wbthomason/packer.nvim
git clone --depth 1 https://github.com/wbthomason/packer.nvim ~/.local/share/nvim/site/pack/packer/start/packer.nvim
cd ~/.config/nvim/lua/alex
nvim
Ignore errors.
In the neovim terminal:
:edit packer.lua
:so
:PackerSync
to source the file and sync Packer. Close the session, then reopen.