From 8dac56b6bea30d5c0047c1926e2c1cc3bbbdafd5 Mon Sep 17 00:00:00 2001
From: Guffawaffle <guff@smartergpt.dev>
Date: Wed, 28 Oct 2026 21:36:19 -0500
Subject: [PATCH] Use portable JSON parsing for fleet sync numbers

---
 mods/src/patches/parts/sync.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mods/src/patches/parts/sync.cc b/mods/src/patches/parts/sync.cc
index 6f64bdd2c..68483eea6 100644
--- a/mods/src/patches/parts/sync.cc
+++ b/mods/src/patches/parts/sync.cc
@@ -2483,7 +2483,11 @@ namespace deployed_fleets
     char   buffer[32];
     double widened = value;
     if (const auto [end, ec] = std::to_chars(std::begin(buffer), std::end(buffer), value); ec == std::errc{}) {
-      std::from_chars(std::begin(buffer), end, widened);
+      // Floating-point from_chars requires macOS 26; use the existing JSON parser on supported clients.
+      auto parsed = nlohmann::json::parse(std::begin(buffer), end, nullptr, false);
+      if (parsed.is_number()) {
+        return parsed;
+      }
     }
     return widened;
   }