1 files changed, 5 insertions, 3 deletions
diff --git a/pkgs/development/python-modules/materialx/default.nix b/pkgs/development/python-modules/materialx/default.nix
index b1e11ba6de23..0ebcc212617b 100644
--- a/pkgs/development/python-modules/materialx/default.nix
+++ b/pkgs/development/python-modules/materialx/default.nix
@@ -37,14 +37,14 @@ buildPythonPackage rec {
       openimageio
       imath
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         OpenGL
         Cocoa
       ]
     )
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       libX11
       libXt
       libGL
@@ -54,7 +54,9 @@ buildPythonPackage rec {
     (lib.cmakeBool "MATERIALX_BUILD_OIIO" true)
     (lib.cmakeBool "MATERIALX_BUILD_PYTHON" true)
     # don't build MSL shader back-end on x86_x64-darwin, as it requires a newer SDK with metal support
-    (lib.cmakeBool "MATERIALX_BUILD_GEN_MSL" (stdenv.isLinux || (stdenv.isAarch64 && stdenv.isDarwin)))
+    (lib.cmakeBool "MATERIALX_BUILD_GEN_MSL" (
+      stdenv.hostPlatform.isLinux || (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin)
+    ))
   ];
 
   pythonImportsCheck = [ "MaterialX" ];