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
index 0b745e2..b6be732 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /target
-.env
\ No newline at end of file
+.env
+.direnv
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..c045b9c
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,111 @@
+{
+  "nodes": {
+    "fenix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1704781388,
+        "narHash": "sha256-QEmlnHkDkbDud5M+eXPvJpETXMaodtdM3fs635wzgfA=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "50818d34497c48efbf21b965cf247bda90ffc7e0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1701680307,
+        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-utils",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1704538339,
+        "narHash": "sha256-1734d3mQuux9ySvwf6axRWZRBhtcZA9Q8eftD6EZg6U=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "46ae0210ce163b3cba6c7da08840c1d63de9c701",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1663551060,
+        "narHash": "sha256-e2SR4cVx9p7aW/XnVsGsWZBplApA9ZJUjc0fejJhnYo=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "8a5b9ee7b7a2b38267c9481f5c629c015108ab0d",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "fenix": "fenix",
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs_2"
+      }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1704734508,
+        "narHash": "sha256-avMO21rwRepZXP3yJEgQDuFTatreWwyI6pau1jzuMtA=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "12e7aa3132217cc6a6c1151d468be35d7b365999",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..fa3f1f2
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,37 @@
+{
+  inputs = { fenix.url = "github:nix-community/fenix"; };
+
+  outputs = { self, nixpkgs, flake-utils, fenix }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [ fenix.overlays.default ];
+        };
+
+        toolchain = pkgs.fenix.stable;
+
+        flakePkgs = {
+          #   mzci = pkgs.callPackage ./. { inherit toolchain; }; 
+        };
+      in rec {
+        packages = flake-utils.lib.flattenTree flakePkgs;
+        # defaultPackage = packages.mzci;
+
+        devShell = pkgs.mkShell {
+          inputsFrom = with packages;
+            [ # mzci
+            ];
+          packages = (with pkgs; [ cargo-watch cargo-deny cargo-edit ])
+            ++ (with toolchain; [
+              cargo
+              rustc
+              rustfmt
+
+              # Get the nightly version of rustfmt so we can wrap comments
+              pkgs.fenix.default.rustfmt
+            ]);
+          CARGO_UNSTABLE_SPARSE_REGISTRY = "true";
+        };
+      });
+}