From 1f2a70b198f77a46487f8121b5ac09f2c0102e0e Mon Sep 17 00:00:00 2001
From: Stefan Frijters <sfrijters@gmail.com>
Date: Mon, 23 Mar 2026 12:17:22 +0100
Subject: [PATCH] buildEmscriptenPackage: move EMCONFIGURE_JS into env for
 structuredAttrs

---
 pkgs/development/em-modules/generic/default.nix | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/em-modules/generic/default.nix b/pkgs/development/em-modules/generic/default.nix
index 394defdb631d..262e0bd1abf0 100644
--- a/pkgs/development/em-modules/generic/default.nix
+++ b/pkgs/development/em-modules/generic/default.nix
@@ -37,8 +37,10 @@ wrapDerivation (
     ]
     ++ nativeBuildInputs;
 
-    # fake conftest results with emscripten's python magic
-    EMCONFIGURE_JS = 2;
+    env = args.env or { } // {
+      # fake conftest results with emscripten's python magic
+      EMCONFIGURE_JS = 2;
+    };
 
     # removes archive indices
     dontStrip = args.dontStrip or true;