diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7e9412b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+.direnv/
+play/
+*.out
\ No newline at end of file
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..94ea330
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,63 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1781607440,
+        "narHash": "sha256-rxO+uc/KFbSJp+pgyXRuAX6QlG9hJdnt0BXpEQRXY+U=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "3e41b24abd260e8f71dbe2f5737d24122f972158",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1776329215,
+        "narHash": "sha256-a8BYi3mzoJ/AcJP8UldOx8emoPRLeWqALZWu4ZvjPXw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b86751bc4085f48661017fa226dee99fab6c651b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "sydpkgs": "sydpkgs"
+      }
+    },
+    "sydpkgs": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1782091643,
+        "narHash": "sha256-zPo1HibLjRc1Emy+MzUUvwl0iHJr9k7JGni/Fo4MP0A=",
+        "ref": "lad",
+        "rev": "a787aeb2a908bc0b39b747f372d952aa1c737be2",
+        "revCount": 42,
+        "type": "git",
+        "url": "https://git.deertopia.net/msyds/sydpkgs"
+      },
+      "original": {
+        "ref": "lad",
+        "type": "git",
+        "url": "https://git.deertopia.net/msyds/sydpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..6e01b96
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,22 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    sydpkgs.url = "git+https://git.deertopia.net/msyds/sydpkgs?ref=lad";
+  };
+
+  outputs = inputs:
+    let
+      system = "x86_64-linux";
+      pkgs = import inputs.nixpkgs {
+        inherit system;
+      };
+    in {
+      devShells.${system}.default = pkgs.mkShell {
+        packages = [
+          (pkgs.lua5_1.withPackages (ps: with ps; [
+            lpeg
+          ]))
+        ];
+      };
+    };
+}