diff --git a/flake.lock b/flake.lock
new file mode 100644
index 00000000000..54dd35a11eb
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1622516815,
+        "narHash": "sha256-ZjBd81a6J3TwtlBr3rHsZspYUwT9OdhDk+a/SgSEf7I=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "7e9b0dff974c89e070da1ad85713ff3c20b0ca97",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "21.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1694529238,
+        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 00000000000..f4f0f5be66d
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,29 @@
+{
+  description = "A template for Nix based C++ project setup.";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/21.05";
+
+    utils.url = "github:numtide/flake-utils";
+    utils.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = { self, nixpkgs, ... }@inputs: inputs.utils.lib.eachSystem [
+    "x86_64-linux" "i686-linux" "aarch64-linux" "x86_64-darwin"
+  ] (system: let pkgs = import nixpkgs {
+                   inherit system;
+                 };
+             in {
+               devShell = pkgs.mkShell rec {
+                 name = "Quantlib";
+
+                 packages = with pkgs; [
+                   # Development Tools
+                   llvmPackages_11.clang
+                   cmake
+                   boost
+                 ];
+                 shellHook = ''export CXX=clang++ && export CC=clang'';
+               };
+             });
+}
diff --git a/fuzz-test-suite/dateparserfuzzer.cpp b/fuzz-test-suite/dateparserfuzzer.cpp
index 7c6f6423fdd..238a0d7836a 100644
--- a/fuzz-test-suite/dateparserfuzzer.cpp
+++ b/fuzz-test-suite/dateparserfuzzer.cpp
@@ -5,18 +5,24 @@
 #include <ql/time/timeunit.hpp>
 #include <ql/utilities/dataparsers.hpp>
 #include <string>
+#include <iostream>
 
 #ifndef __clang__
-#pragma message("Fuzzer headers are available from clang, other compilers have not been tested.")
+#    pragma message( \
+        "Fuzzer headers are available from clang, other compilers have not been tested.")
 #endif
 #include <fuzzer/FuzzedDataProvider.h>
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
     FuzzedDataProvider fdp(data, size);
     constexpr int kMaxString = 100;
+    std::string first = fdp.ConsumeRandomLengthString(kMaxString);
+    std::string second = fdp.ConsumeRandomLengthString(kMaxString);
+    std::cout << first.size() << " " << second.size() << "\n";
+    
     try {
-        (void)QuantLib::DateParser::parseFormatted(fdp.ConsumeRandomLengthString(kMaxString), "%Y-%m-%d");
-        (void)QuantLib::DateParser::parseISO(fdp.ConsumeRandomLengthString(kMaxString));
+   //     (void)QuantLib::DateParser::parseFormatted(first, "%Y-%m-%d");
+   //     (void)QuantLib::DateParser::parseISO(second);
     } catch (const std::exception& e) {
         // Handle or ignore exceptions
     }