feat(home-manager): add support for neovim (#27)

modules/home-manager/default.nix

@@ -11,6 +11,7 @@ in {
       ./starship.nix
       ./helix.nix
       ./gtk.nix
+      ./neovim.nix
       ./polybar.nix
       ./sway.nix
       ./tmux.nix

modules/home-manager/neovim.nix

@@ -0,0 +1,29 @@
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.programs.neovim.catppuccin;
+in
+{
+  options.programs.neovim.catppuccin = lib.ctp.mkCatppuccinOpt "neovim" config;
+
+  config.programs.neovim = with lib; mkIf cfg.enable {
+    plugins = with pkgs.vimPlugins; [
+      {
+        plugin = catppuccin-nvim;
+        config = ''
+          lua << EOF
+            local compile_path = vim.fn.stdpath("cache") .. "/catppuccin-nvim"
+            vim.fn.mkdir(compile_path, "p")
+            vim.opt.runtimepath:append(compile_path)
+
+            require("catppuccin").setup({
+            	compile_path = compile_path,
+            	flavour = "${cfg.flavour}",
+            })
+
+            vim.api.nvim_command("colorscheme catppuccin")
+          EOF
+        '';
+      }
+    ];
+  };
+}