Re-added nix :)

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -23,3 +23,6 @@ pnpm-debug.log*
 
 # jetbrains setting folder
 .idea/
+
+# nix
+.direnv/

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1766473571,
+        "narHash": "sha256-5G1NDO2PulBx1RoaA6U1YoUDX0qZslpPxv+n5GX6Qto=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "76701a179d3a98b07653e2b0409847499b2a07d3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-25.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,37 @@
+{
+  description = "atashdotdev dev shell";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
+  };
+
+  outputs = { self, nixpkgs }:
+    let
+      allSystems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+
+      forAllSystems = f: nixpkgs.lib.genAttrs allSystems (system: f {
+        pkgs = import nixpkgs { inherit system; };
+      });
+    in
+    {
+      devShells = forAllSystems ({ pkgs }: {
+        default = pkgs.mkShell {
+          packages = with pkgs; [
+            nodejs_20
+            nodePackages.pnpm
+          ];
+
+          shellHook = ''
+            echo "<atashdotdev dev shell>"
+            echo "Node version: $(node --version)"
+            echo "pnpm version: $(pnpm --version)"
+          '';
+        };
+      });
+    };
+}