diff --git a/.gitignore b/.gitignore
index 40894a2..de4a284 100644
--- a/.gitignore
+++ b/.gitignore
@@ -42,6 +42,8 @@ cmake-build*
 *.out
 *.app
 
-/rtags*
 /.cache/
+/.direnv/
+/.envrc
 /compile_commands.json
+/rtags*
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..e393622
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,60 @@
+{
+  "nodes": {
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1650374568,
+        "narHash": "sha256-Z+s0J8/r907g149rllvwhb4pKi8Wam5ij0st8PwAh+E=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "b4a34015c698c7793d592d66adbab377907a2be8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1649676176,
+        "narHash": "sha256-OWKJratjt2RW151VUlJPRALb7OU2S5s+f0vLj4o1bHM=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "a4b154ebbdc88c8498a5c7b01589addc9e9cb678",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1651726670,
+        "narHash": "sha256-dSGdzB49SEvdOJvrQWfQYkAefewXraHIV08Vz6iDXWQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c777cdf5c564015d5f63b09cc93bef4178b19b01",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..8d7a73e
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,22 @@
+{
+  description = "jcon-cpp";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  inputs.flake-compat = {
+    url = "github:edolstra/flake-compat";
+    flake = false;
+  };
+  inputs.flake-utils = {
+    url = "github:numtide/flake-utils";
+    inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = { self, nixpkgs, flake-compat, flake-utils }:
+    (flake-utils.lib.eachDefaultSystem (system:
+      let pkgs = import nixpkgs { inherit system; };
+      in rec {
+        devShell = pkgs.mkShell rec {
+          packages = with pkgs; [ clang_13 cmake qt5.qtbase qt5.qtwebsockets ];
+        };
+      }));
+}
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..fa2a56c
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,6 @@
+(import (let lock = builtins.fromJSON (builtins.readFile ./flake.lock);
+in fetchTarball {
+  url =
+    "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
+  sha256 = lock.nodes.flake-compat.locked.narHash;
+}) { src = ./.; }).shellNix