added stuff

nyx/modules/extra/shared/nixos/comma/default.nix

@@ -0,0 +1,31 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  inherit (lib) mkOption mkEnableOption types literalExpression;
+
+  cfg = config.programs.comma;
+in {
+  options.programs.comma = {
+    enable = mkEnableOption "comma, a wrapper to run software without installing it";
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.comma.override {nix-index-unwrapped = config.programs.nix-index.package;};
+      defaultText = literalExpression "pkgs.comma.override { nix-index-unwrapped = config.programs.nix-index.package; }";
+      description = "Package providing the `comma` tool.";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = [cfg.package];
+
+    programs = {
+      command-not-found.enable = lib.mkForce false;
+
+      nix-index.enable = true;
+    };
+  };
+}