From 5a02dc8ee81a50842892d6b0eb7a778af0ed5077 Mon Sep 17 00:00:00 2001
From: Adam Joseph <adam@westernsemico.com>
Date: Fri, 15 Jul 2022 15:53:01 -0700
Subject: [PATCH] nlohmann_json: allow overrides by eliminating use of `rec`

The existing nlohmann_json expression prevents users from overriding
fields (like `doCheck`) because it uses `rec` in the argument to
`mkDerivation`.  Let's use the shiny new
pass-a-function-to-`mkDerivation` feature to do the same thing without
blocking overrides.
---
 pkgs/development/libraries/nlohmann_json/default.nix | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/pkgs/development/libraries/nlohmann_json/default.nix b/pkgs/development/libraries/nlohmann_json/default.nix
index 0e3fb180c8131d3..ec4df7927f2b62f 100644
--- a/pkgs/development/libraries/nlohmann_json/default.nix
+++ b/pkgs/development/libraries/nlohmann_json/default.nix
@@ -10,23 +10,23 @@ let
     rev = "v3.0.0";
     sha256 = "O6p2PFB7c2KE9VqWvmTaFywbW1hSzAP5V42EuemX+ls=";
   };
-in stdenv.mkDerivation rec {
+in stdenv.mkDerivation (finalAttrs: {
   pname = "nlohmann_json";
   version = "3.10.5";
 
   src = fetchFromGitHub {
     owner = "nlohmann";
     repo = "json";
-    rev = "v${version}";
+    rev = "v${finalAttrs.version}";
     sha256 = "DTsZrdB9GcaNkx7ZKxcgCA3A9ShM5icSF0xyGguJNbk=";
   };
 
   nativeBuildInputs = [ cmake ];
 
   cmakeFlags = [
-    "-DBuildTests=${if doCheck then "ON" else "OFF"}"
+    "-DBuildTests=${if finalAttrs.doCheck then "ON" else "OFF"}"
     "-DJSON_MultipleHeaders=ON"
-  ] ++ lib.optional doCheck "-DJSON_TestDataDirectory=${testData}";
+  ] ++ lib.optional finalAttrs.doCheck "-DJSON_TestDataDirectory=${testData}";
 
   doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
 
@@ -44,4 +44,4 @@ in stdenv.mkDerivation rec {
     license = licenses.mit;
     platforms = platforms.all;
   };
-}
+})