Modular neovim plugin configuration

In the previous post I hinted about configuring neovim plugins declaratively in Nix. Today, I discovered that this is indeed possible, ¹ in some basic form, in home-manager.

The feature was added in PR #2637.

The old way

The old way is to add your plugin in Nix,

  plugins = with pkgs.vimPlugins; [
    telescope-nvim
  ]

And then separately configure it in init.vim or init.lua — ie., extraConfig, as we did in Add a neovim plugin: telescope.nvim.

The new way

However, instead, you could do both the above in the same place as:

  plugins = with pkgs.vimPlugins; [
    { 
      plugin = telescope-nvim;
      type = "lua";
      config = ''
        nmap("<leader>ff", ":Telescope find_files<cr>")
        nmap("<leader>fg", ":Telescope live_grep<cr>")
        nmap("<leader>fb", ":Telescope buffers<cr>")
        nmap("<leader>fh", ":Telescope help_tags<cr>")
        '';
    }
  }

https://github.com/srid/nixos-config/commit/88a202421c262ce60509feca14ce1505b726e258