Add nix devshell

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -14,3 +14,4 @@
 /.socket-repl-port
 .hgignore
 .hg/
+/.direnv

flake.lock

@@ -0,0 +1,26 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1727634051,
+        "narHash": "sha256-S5kVU7U82LfpEukbn/ihcyNt2+EvG7Z5unsKW9H/yFA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "06cf0e1da4208d3766d898b7fdab6513366d45b9",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-unstable",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,33 @@
+{
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-unstable";
+  };
+  outputs = { self, nixpkgs }:
+    let
+      system = "x86_64-linux";
+      pkgs = import nixpkgs {
+        inherit system;
+        overlays = [
+          (final: prev: {
+            clojure = prev.clojure.override { jdk = final.jdk22; };
+          })
+        ];
+      };
+    in
+      {
+        devShells.${system}.default = pkgs.mkShell rec {
+          packages = [
+          ];
+
+          nativeBuildInputs = with pkgs; [
+            clojure
+          ];
+
+          buildInputs = with pkgs; [
+          ];
+
+          inputsFrom = with pkgs; [
+          ];
+        };
+      };
+}