pkgbuild: add nlohmann_json

pkgbuild/PKGBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Simon Hallsten <flightlessmangoyt@gmail.com>
 
 pkgname=('mangohud' 'lib32-mangohud')
-pkgver=0.6.6.1.r175.g11142b5
+pkgver=0.6.6.1.r178.g4341843
 pkgrel=1
 pkgdesc="Vulkan and OpenGL overlay to display performance information"
 arch=('x86_64')
@@ -14,14 +14,16 @@ source=("mangohud"::"git+https://github.com/flightlessmango/MangoHud.git#branch=
         "imgui-v1.81.tar.gz::https://github.com/ocornut/imgui/archive/v1.81.tar.gz"
         "imgui-1.81-1-wrap.zip::https://wrapdb.mesonbuild.com/v1/projects/imgui/1.81/1/get_zip"
         "spdlog-1.8.5.tar.gz::https://github.com/gabime/spdlog/archive/v1.8.5.tar.gz"
-        "spdlog-1.8.5-1-wrap.zip::https://wrapdb.mesonbuild.com/v1/projects/spdlog/1.8.5/1/get_zip")
+        "spdlog-1.8.5-1-wrap.zip::https://wrapdb.mesonbuild.com/v1/projects/spdlog/1.8.5/1/get_zip"
+        "nlohmann_json-3.10.5.zip::https://github.com/nlohmann/json/releases/download/v3.10.5/include.zip")
 
 sha256sums=('SKIP'
             'SKIP'
             'f7c619e03a06c0f25e8f47262dbc32d61fd033d2c91796812bf0f8c94fca78fb'
             '6d00b442690b6a5c5d8f898311daafbce16d370cf64f53294c3b8c5c661e435f'
             '944d0bd7c763ac721398dca2bb0f3b5ed16f67cef36810ede5061f35a543b4b8'
-            '3c38f275d5792b1286391102594329e98b17737924b344f98312ab09929b74be')
+            '3c38f275d5792b1286391102594329e98b17737924b344f98312ab09929b74be'
+            'b94997df68856753b72f0d7a3703b7d484d4745c567f3584ef97c96c25a5798e')
 
 _build_args="-Dappend_libdir_mangohud=false -Dwith_xnvctrl=disabled -Duse_system_vulkan=enabled -Dmangoapp_layer=true"
 
@@ -39,6 +41,11 @@ prepare() {
   # meson subprojects
   ln -sv "$srcdir/imgui-1.81" subprojects
   ln -sv "$srcdir/spdlog-1.8.5" subprojects
+  mkdir  subprojects/nlohmann_json-3.10.5
+  ln -sv "$srcdir/include" subprojects/nlohmann_json-3.10.5/
+  ln -sv "$srcdir/single_include" subprojects/nlohmann_json-3.10.5/
+  ln -sv "$srcdir/LICENSE.MIT" subprojects/nlohmann_json-3.10.5/
+  ln -sv "$srcdir/meson.build" subprojects/nlohmann_json-3.10.5/
 }
 
 build() {