From ce2a8de138f3798593c5c88eef506afaf45f242b Mon Sep 17 00:00:00 2001
From: Stefan Frijters <sfrijters@gmail.com>
Date: Thu, 19 Feb 2026 22:38:23 +0100
Subject: [PATCH] python3Packages.xgrammar: move env vars into env for
 structuredAttrs

---
 pkgs/development/python-modules/xgrammar/default.nix | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/python-modules/xgrammar/default.nix b/pkgs/development/python-modules/xgrammar/default.nix
index fb44ff711e69..adced646dc38 100644
--- a/pkgs/development/python-modules/xgrammar/default.nix
+++ b/pkgs/development/python-modules/xgrammar/default.nix
@@ -70,10 +70,12 @@ buildPythonPackage rec {
     writableTmpDirAsHomeHook
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isLinux (toString [
-    # xgrammar hardcodes -flto=auto while using static linking, which can cause linker errors without this additional flag.
-    "-ffat-lto-objects"
-  ]);
+  env = lib.optionalAttrs stdenv.hostPlatform.isLinux {
+    NIX_CFLAGS_COMPILE = toString [
+      # xgrammar hardcodes -flto=auto while using static linking, which can cause linker errors without this additional flag.
+      "-ffat-lto-objects"
+    ];
+  };
 
   disabledTests = [
     # You are trying to access a gated repo.