From b8923542a3b19b9bcfc9a3ed4218abe78009f38a Mon Sep 17 00:00:00 2001
From: Florian Brandes <florian.brandes@posteo.de>
Date: Sun, 3 Nov 2024 16:37:29 +0100
Subject: [PATCH] Revert "python3Packages.materialx: 1.38.10 -> 1.39.1"

This reverts commit 993ec329851b363c24ceac95034c6bc7111acb0b.
MaterialX has some upstream issues which haven't been quite
worked out, yet[1]. It is therefore reasonable to wait
with an update in nixpkgs. It also breaks downstream packages
like python312Packages.openusd as well as blender[2]

[1]: https://github.com/PixarAnimationStudios/OpenUSD/pull/3159
[2]: https://github.com/NixOS/nixpkgs/pull/326466#issuecomment-2293033805

Signed-off-by: Florian Brandes <florian.brandes@posteo.de>
---
 pkgs/development/python-modules/materialx/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/python-modules/materialx/default.nix b/pkgs/development/python-modules/materialx/default.nix
index 77f85757234083..2e7af7b89b1f6d 100644
--- a/pkgs/development/python-modules/materialx/default.nix
+++ b/pkgs/development/python-modules/materialx/default.nix
@@ -17,13 +17,13 @@
 
 buildPythonPackage rec {
   pname = "materialx";
-  version = "1.39.1";
+  version = "1.38.10";
 
   src = fetchFromGitHub {
     owner = "AcademySoftwareFoundation";
     repo = "MaterialX";
-    rev = "refs/tags/v${version}";
-    hash = "sha256-WzzsY1hOWwJEqT/ZRLIoZDfKNvx1Yf6aFhA3ZcSPx+s=";
+    rev = "v${version}";
+    hash = "sha256-/kMHmW2dptZNtjuhE5s+jvPRIdtY+FRiVtMU+tiBgQo=";
   };
 
   format = "other";