feat: add support for nix development enviroment

Author: catrielmuller

.envrc

@@ -0,0 +1,4 @@
+# Check if nix command is available before trying to use flake
+if command -v nix >/dev/null 2>&1; then
+    use flake
+fi

flake.nix

@@ -0,0 +1,30 @@
+{
+  description = "Roo-Code development environment";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";
+  };
+
+  outputs = { self, nixpkgs, ... }: let
+    systems = [ "aarch64-darwin" "x86_64-linux" ];
+
+    forAllSystems = nixpkgs.lib.genAttrs systems;
+
+    mkDevShell = system: let
+      pkgs = import nixpkgs { inherit system; };
+    in pkgs.mkShell {
+      name = "roo-code";
+
+      packages = with pkgs; [
+        nodejs_20
+        corepack_20
+        libnotify
+      ];
+    };
+  in {
+    devShells = forAllSystems (system: {
+      default = mkDevShell system;
+    });
+  };
+}
+