Adding flake.nix

flake.nix

@@ -0,0 +1,28 @@
+{
+  inputs = {
+    # nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    systems.url = "github:nix-systems/default";
+  };
+
+  outputs =
+    { systems, nixpkgs, ... }@inputs:
+    let
+      eachSystem = f: nixpkgs.lib.genAttrs (import systems) (system: f nixpkgs.legacyPackages.${system});
+    in
+    {
+      devShells = eachSystem (pkgs: {
+        default = pkgs.mkShell {
+          buildInputs = [
+            # pkgs.nodejs
+
+            # You can set the major version of Node.js to a specific one instead
+            # of the default version
+            pkgs.nodejs_20
+
+            pkgs.yarn
+            pkgs.nodePackages.gulp
+          ];
+        };
+      });
+    };
+}