diff --git a/.gitignore b/.gitignore
index 13c8d2c6..a8eda6ef 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@
 
 # direnv (https://direnv.net/)
 .envrc
+.direnv
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 00000000..b8ff3903
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,83 @@
+{
+  "nodes": {
+    "fenix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1715063087,
+        "narHash": "sha256-cktPkcCmJ2sR0V/FaWEuCWmKuGPbwoMltih/EfF0mXg=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "f8f16c1f2c83bea4e51e6522d988ec8bfcc8420e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1714971268,
+        "narHash": "sha256-IKwMSwHj9+ec660l+I4tki/1NRoeGpyA2GdtdYpAgEw=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "27c13997bf450a01219899f5a83bd6ffbfc70d3c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-23.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "fenix": "fenix",
+        "flake-compat": "flake-compat",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1714936835,
+        "narHash": "sha256-M+PpgfRMBfHo8Jb2ou/s3maAZbps0XnuHXQU9Hv9vL0=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "c4618fe14d39992fbbb85c2d6cad028a232c13d2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 00000000..c0cf0cc8
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,53 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
+
+    # The rustup equivalent for Nix.
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    # Allows non-flakes users to still be able to `nix-shell` based on
+    # `shell.nix` instead of this `flake.nix`.
+    flake-compat = {
+      url = "github:edolstra/flake-compat";
+      flake = false;
+    };
+  };
+
+  outputs = { self, nixpkgs, fenix, ... }:
+    let
+      inherit (nixpkgs) lib;
+
+      eachSupportedSystem = lib.genAttrs supportedSystems;
+      supportedSystems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+
+      mkDevShells = system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+
+          # get the rust toolchain from the rustup
+          # `rust-toolchain.toml` configuration file
+          rust-toolchain = fenix.packages.${system}.fromToolchainFile {
+            file = ./rust-toolchain.toml;
+            sha256 = "opUgs6ckUQCyDxcB9Wy51pqhd0MPGHUVbwRKKPGiwZU=";
+          };
+
+        in
+        {
+          default = pkgs.mkShell {
+            buildInputs = [ rust-toolchain ];
+          };
+        };
+
+    in
+    {
+      devShells = eachSupportedSystem mkDevShells;
+    };
+}
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 00000000..3ccec483
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,4 @@
+[toolchain]
+channel = "stable"
+profile = "default"
+components = [ "rust-src", "rust-analyzer" ]
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 00000000..9d07c80a
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,13 @@
+# Compatiblity file for non-flake Nix users.
+#
+# <https://github.com/edolstra/flake-compat>
+(import
+  (
+    let lock = builtins.fromJSON (builtins.readFile ./flake.lock); in
+    fetchTarball {
+      url = lock.nodes.flake-compat.locked.url or "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
+      sha256 = lock.nodes.flake-compat.locked.narHash;
+    }
+  )
+  { src = ./.; }
+).shellNix