Assisted-by: Claude Opus 5.5 via Claude Code

diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..3ddc189
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1792773339,
+        "narHash": "sha256-rZLrzrC6i+jnTAlvPZHogKDulY7WWDEv9hJeHieO7Zw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "3ec636362e1816bc2f0888fa0fa2c69f1bc9e504",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..9f05653
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,15 @@
+{
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+  outputs = { nixpkgs, ... }:
+    let
+      forAllSystems = nixpkgs.lib.genAttrs [ "aarch64-darwin" "x86_64-linux" ];
+    in
+    {
+      devShells = forAllSystems (system: {
+        default = nixpkgs.legacyPackages.${system}.mkShell {
+          packages = [ nixpkgs.legacyPackages.${system}.ergogen ];
+        };
+      });
+    };
+}