diff --git a/.envrc b/.envrc
new file mode 100644
index 00000000..b9238c3b
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+use flake
diff --git a/.gitignore b/.gitignore
index bf42f711..d060303a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,6 @@ TODO
 .history
 
 /src/generated
+
+# direnv
+/.direnv
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 00000000..376f488b
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1726560853,
+        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1728538411,
+        "narHash": "sha256-f0SBJz1eZ2yOuKUr5CA9BHULGXVSn6miBuUWdTyhUhU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b69de56fac8c2b6f8fd27f2eca01dcda8e0a4221",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "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 00000000..cc29c5c9
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,23 @@
+{
+  description = "A web editor to generate and validate `publiccode.yml` files";
+
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  };
+
+  outputs = { flake-utils, nixpkgs, self }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let pkgs = import nixpkgs { inherit system; }; in
+      {
+        devShells.default = pkgs.mkShell {
+          packages = [
+            pkgs.go
+            pkgs.nodejs
+            pkgs.shellcheck
+          ];
+        };
+        formatter = pkgs.nixpkgs-fmt;
+      }
+    );
+}