neovim-flake/docs/manual/configuring/custom-plugins/legacy-method.md

Legacy Method

Prior to version v0.5, the method of adding new plugins was adding the plugin package to vim.startPlugins and add its configuration as a DAG under one of vim.configRC or vim.luaConfigRC. Users who have not yet updated to 0.5, or prefer a more hands-on approach may use the old method where the load order of the plugins is determined by DAGs.

Adding plugins

To add a plugin not available in nvf as a module to your configuration, you may add it to in order to make it available to Neovim at runtime.

{pkgs, ...}: {
  # Add a Neovim plugin from Nixpkgs to the runtime.
  vim.startPlugins = [pkgs.vimPlugins.aerial-nvim];
}

And to configure the added plugin, you can use the luaConfigRC option to provide configuration as a DAG using the nvf extended library.

{inputs, ...}: let
  # This assumes you have an input called 'nvf' in your flake inputs
  # and 'inputs' in your specialArgs. In the case you have passed 'nvf'
  # to specialArgs, the 'inputs' prefix may be omitted.
  inherit (inputs.nvf.lib.nvim.dag) entryAnywhere;
in {
  vim.luaConfigRC.aerial-nvim= entryAnywhere ''
    require('aerial').setup {
      -- your configuration here
    }
  '';
}