python3Packages.gpytorch: disable tests that hang forever on x86_64-darwin (#472166)

pkgs/development/python-modules/gpytorch/default.nix

@@ -1,5 +1,6 @@
 {
   lib,
+  stdenv,
   buildPythonPackage,
   fetchFromGitHub,
 
@@ -60,6 +61,14 @@ buildPythonPackage rec {
     "test_t_matmul_matrix"
   ];
 
+  disabledTestPaths = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
+    # Hang forever
+    "test/examples/test_spectral_mixture_gp_regression.py"
+    "test/kernels/test_spectral_mixture_kernel.py"
+    "test/utils/test_nearest_neighbors.py"
+    "test/variational/test_nearest_neighbor_variational_strategy.py"
+  ];
+
   meta = {
     description = "Highly efficient and modular implementation of Gaussian Processes, with GPU acceleration";
     homepage = "https://gpytorch.ai";