adding helix, vanilla neovim

home/modules/devtools/helix/default.nix

@@ -0,0 +1,63 @@
+{
+  inputs,
+  pkgs,
+  lib,
+  config,
+  ...
+}: let
+  inherit (lib) mkIf mkEnableOption;
+  cfg = config.modules.devtools.helix;
+in {
+  imports = [./languages.nix];
+
+  options = {
+    modules.devtools.helix.enable = mkEnableOption "Enable helix";
+  };
+
+  config = mkIf cfg.enable {
+    programs.helix = {
+      enable = true;
+      package = inputs.helix.packages.${pkgs.system}.default;
+
+      settings = {
+        theme = "gruvbox_material_dark_soft";
+        editor = {
+          color-modes = true;
+          cursorline = true;
+          cursor-shape = {
+            insert = "bar";
+            normal = "block";
+            select = "underline";
+          };
+          indent-guides.render = true;
+          inline-diagnostics = {
+            cursor-line = "hint";
+            other-lines = "error";
+          };
+          lsp.display-inlay-hints = true;
+          statusline.center = ["position-percentage"];
+          true-color = true;
+          whitespace.characters = {
+            newline = "↴";
+            tab = "⇥";
+          };
+        };
+
+        keys = {
+          normal = {
+            y = "yank_to_clipboard";
+            p = "paste_clipboard_after";
+            space.u = {
+              f = ":format"; # format using LSP formatter
+              w = ":set whitespace.render all";
+              W = ":set whitespace.render none";
+            };
+          };
+          insert = {
+            C-v = "paste_clipboard_after";
+          };
+        };
+      };
+    };
+  };
+}