Use upstream nlohmann_json

flake.lock

@@ -2,9 +2,9 @@
     "inputs": {
         "nixpkgs": {
             "inputs": {},
-            "narHash": "sha256-ltGlDPfwicH/u4orj1n4JXgRsA+jvKQsGnekObi0TV4=",
-            "originalUri": "nixpkgs/release-19.03",
-            "uri": "github:edolstra/nixpkgs/9a593b575e4044f9aff939b512e7cb1cf1e76a65"
+            "narHash": "sha256-D1YSQzR6Xo2cNZ4sf+WCak2fqE/CIbwpZbPKd2B2Syc=",
+            "originalUrl": "nixpkgs/release-19.09",
+            "url": "github:edolstra/nixpkgs/e3d44c4fc62c99b850c792429cb61b946b66a704"
         }
     },
     "version": 3

flake.nix

@@ -3,7 +3,7 @@
 
   edition = 201909;
 
-  inputs.nixpkgs.uri = "nixpkgs/release-19.03";
+  inputs.nixpkgs.uri = "nixpkgs/release-19.09";
 
   outputs = { self, nixpkgs }:
 
@@ -73,6 +73,7 @@
             bzip2 xz brotli editline
             openssl pkgconfig sqlite boehmgc
             boost
+            nlohmann_json
 
             # Tests
             git
@@ -313,7 +314,7 @@
 
             doInstallCheck = true;
 
-            lcovFilter = [ "*/boost/*" "*-tab.*" "*/nlohmann/*" "*/linenoise/*" ];
+            lcovFilter = [ "*/boost/*" "*-tab.*" "*/linenoise/*" ];
 
             # We call `dot', and even though we just use it to
             # syntax-check generated dot files, it still requires some

src/nlohmann/json_fwd.hpp

@@ -1,64 +0,0 @@
-#ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
-#define INCLUDE_NLOHMANN_JSON_FWD_HPP_
-
-#include <cstdint> // int64_t, uint64_t
-#include <map> // map
-#include <memory> // allocator
-#include <string> // string
-#include <vector> // vector
-
-/*!
-@brief namespace for Niels Lohmann
-@see https://github.com/nlohmann
-@since version 1.0.0
-*/
-namespace nlohmann
-{
-/*!
-@brief default JSONSerializer template argument
-
-This serializer ignores the template arguments and uses ADL
-([argument-dependent lookup](https://en.cppreference.com/w/cpp/language/adl))
-for serialization.
-*/
-template<typename T = void, typename SFINAE = void>
-struct adl_serializer;
-
-template<template<typename U, typename V, typename... Args> class ObjectType =
-         std::map,
-         template<typename U, typename... Args> class ArrayType = std::vector,
-         class StringType = std::string, class BooleanType = bool,
-         class NumberIntegerType = std::int64_t,
-         class NumberUnsignedType = std::uint64_t,
-         class NumberFloatType = double,
-         template<typename U> class AllocatorType = std::allocator,
-         template<typename T, typename SFINAE = void> class JSONSerializer =
-         adl_serializer>
-class basic_json;
-
-/*!
-@brief JSON Pointer
-
-A JSON pointer defines a string syntax for identifying a specific value
-within a JSON document. It can be used with functions `at` and
-`operator[]`. Furthermore, JSON pointers are the base for JSON patches.
-
-@sa [RFC 6901](https://tools.ietf.org/html/rfc6901)
-
-@since version 2.0.0
-*/
-template<typename BasicJsonType>
-class json_pointer;
-
-/*!
-@brief default JSON class
-
-This type is the default specialization of the @ref basic_json class which
-uses the standard template types.
-
-@since version 1.0.0
-*/
-using json = basic_json<>;
-}  // namespace nlohmann
-
-#endif  // INCLUDE_NLOHMANN_JSON_FWD_HPP_