nlohmann_json: init at 2.0.2

A header only C++ library for modern JSON.

pkgs/development/libraries/nlohmann_json/default.nix

@@ -0,0 +1,25 @@
+{ stdenv, fetchFromGitHub, cmake }:
+
+stdenv.mkDerivation rec {
+  name = "nlohmann_json-${version}";
+  version = "2.0.2";
+
+  src = fetchFromGitHub {
+    owner = "nlohmann";
+    repo = "json";
+    rev = "v${version}";
+    sha256 = "10sk8d23vh0c7b3qafjz2n8r5jv8vc275bl069ikhqnx1zxv6hwp";
+  };
+
+  buildInputs = [ cmake ];
+
+  doCheck = true;
+  checkTarget = "test";
+
+  meta = with stdenv.lib; {
+    description = "Header only C++ library for the JSON file format";
+    homepage = https://github.com/nlohmann/json;
+    license = licenses.mit;
+    platforms = platforms.all;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -8829,6 +8829,8 @@ in
     nix = pkgs.nixUnstable;
   };
 
+  nlohmann_json = callPackage ../development/libraries/nlohmann_json { };
+
   nntp-proxy = callPackage ../applications/networking/nntp-proxy { };
 
   non = callPackage ../applications/audio/non { };