diff --git a/pyodide-build/pyodide_build/build_env.py b/pyodide-build/pyodide_build/build_env.py
index 715503367..ecbffeb38 100644
--- a/pyodide-build/pyodide_build/build_env.py
+++ b/pyodide-build/pyodide_build/build_env.py
@@ -28,39 +28,39 @@ rustup target add wasm32-unknown-emscripten --toolchain ${RUST_TOOLCHAIN}
 
 
 BUILD_VARS: set[str] = {
-    "PATH",
-    "PYTHONPATH",
-    "PYODIDE_JOBS",
-    "PYODIDE_ROOT",
-    "PYTHONINCLUDE",
-    "NUMPY_LIB",
-    "PYODIDE_PACKAGE_ABI",
+    "CARGO_BUILD_TARGET",
+    "CARGO_TARGET_WASM32_UNKNOWN_EMSCRIPTEN_LINKER",
     "HOME",
     "HOSTINSTALLDIR",
-    "TARGETINSTALLDIR",
-    "SYSCONFIG_NAME",
     "HOSTSITEPACKAGES",
-    "PYTHON_ARCHIVE_URL",
-    "PYTHON_ARCHIVE_SHA256",
-    "PYVERSION",
+    "NUMPY_LIB",
+    "PATH",
+    "PKG_CONFIG_PATH",
+    "PLATFORM_TRIPLET",
     "PYMAJOR",
-    "PYMINOR",
     "PYMICRO",
+    "PYMINOR",
+    "PYO3_CROSS_INCLUDE_DIR",
+    "PYO3_CROSS_LIB_DIR",
+    "PYODIDE_EMSCRIPTEN_VERSION",
+    "PYODIDE_JOBS",
+    "PYODIDE_PACKAGE_ABI",
+    "PYODIDE_ROOT",
+    "PYTHON_ARCHIVE_SHA256",
+    "PYTHON_ARCHIVE_URL",
+    "PYTHONINCLUDE",
+    "PYTHONPATH",
+    "PYVERSION",
+    "RUSTFLAGS",
+    "RUST_TOOLCHAIN",
     "SIDE_MODULE_CFLAGS",
     "SIDE_MODULE_CXXFLAGS",
     "SIDE_MODULE_LDFLAGS",
     "STDLIB_MODULE_CFLAGS",
-    "WASM_LIBRARY_DIR",
-    "PKG_CONFIG_PATH",
-    "CARGO_BUILD_TARGET",
-    "CARGO_TARGET_WASM32_UNKNOWN_EMSCRIPTEN_LINKER",
-    "RUSTFLAGS",
-    "PYO3_CROSS_LIB_DIR",
-    "PYO3_CROSS_INCLUDE_DIR",
-    "PYODIDE_EMSCRIPTEN_VERSION",
-    "PLATFORM_TRIPLET",
     "SYSCONFIGDATA_DIR",
-    "RUST_TOOLCHAIN",
+    "SYSCONFIG_NAME",
+    "TARGETINSTALLDIR",
+    "WASM_LIBRARY_DIR",
 }