diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..9229ca9
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,4 @@
+# Enter a `nix develop` shell if installed
+if command -v nix >/dev/null 2>&1; then
+  use flake
+fi
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 1bbe080..7c86f00 100644
--- a/.gitignore
+++ b/.gitignore
@@ -58,4 +58,8 @@ jspm_packages/
 *.sln
 
 # Compact
-managed/
\ No newline at end of file
+managed/
+
+# nix
+.direnv
+.nix-bin
\ No newline at end of file
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..23fdcc9
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,44 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1735563628,
+        "narHash": "sha256-OnSAY7XDSx7CtDoqNh8jwVwh4xNL/2HaJxGjryLWzX8=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b134951a4c9f3c995fd7be05f3243f8ecd65d798",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1754393734,
+        "narHash": "sha256-fbnmAwTQkuXHKBlcL5Nq1sMAzd3GFqCOQgEQw6Hy0Ak=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "a683adc19ff5228af548c6539dbc3440509bfed3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-unstable": "nixpkgs-unstable"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..8095ae5
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,66 @@
+{
+  description = "Nix flake that provides the Compact compiler per system";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
+    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  };
+
+  outputs = inputs:
+    let
+      supportedSystems = [
+        "x86_64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+      forEachSupportedSystem = f:
+        inputs.nixpkgs.lib.genAttrs supportedSystems (
+          system:
+            f {
+              pkgs = import inputs.nixpkgs { inherit system; };
+              pkgsUnstable = import inputs."nixpkgs-unstable" { inherit system; };
+              inherit system;
+            }
+        );
+    in
+    {
+      devShells = forEachSupportedSystem ({ pkgs, pkgsUnstable, system }:
+        let
+          # Compact toolchain version to use
+          compactVersion = "0.24.0";
+
+          installScript = pkgs.writeShellScript "setup-compact" ''
+            set -euo pipefail
+            
+            # Use project-local compact installation in .nix-bin
+            COMPACT_DIR="$PWD/.nix-bin"
+            export COMPACT_INSTALL_DIR="$COMPACT_DIR"
+            
+            # Install compact CLI tool if not present
+            if [ ! -x "$COMPACT_DIR/compact" ]; then
+              echo "Installing compact developer tools to $COMPACT_DIR..."
+              curl --proto '=https' --tlsv1.2 -LsSf https://github.com/midnightntwrk/compact/releases/latest/download/compact-installer.sh | COMPACT_NO_MODIFY_PATH=1 sh
+            fi
+            
+            # Update to specific toolchain version
+            "$COMPACT_DIR/compact" update ${compactVersion}
+            
+            # Patch shebang for NixOS (only needed on NixOS)
+            if [ ! -f "/bin/bash" ]; then
+              find "$COMPACT_DIR/.compact/versions/${compactVersion}" -name "compactc" -type f -exec sed -i '1s|^#!/bin/bash|#!/usr/bin/env bash|' {} \; 2>/dev/null || true
+            fi
+          '';
+        in
+        {
+          default = pkgs.mkShell {
+            packages = [ pkgs.curl pkgs.unzip pkgsUnstable.nodejs pkgs.yarn ];
+            shellHook = ''
+              ${installScript}
+              export PATH="$PWD/.nix-bin:$PATH"
+            '';
+          };
+        }
+      );
+    };
+}
+