diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..1d953f4
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use nix
diff --git a/.gitignore b/.gitignore
index e43b0f9..b7c9000 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,4 @@
 .DS_Store
+
+# Nix + direnv
+.direnv/
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..7fbfa09
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,11 @@
+let
+  pkgs = import <nixpkgs> {};
+in
+pkgs.mkShell {
+  packages = with pkgs; [
+    # Choose the build tools that you need
+    act
+    lua51Packages.luacheck
+    stylua
+  ];
+}