revert to previous pyproject.toml

pyproject.toml

@@ -19,15 +19,6 @@ dependencies = [
     "wandb>=0.21.3",
 ]
 
-[project.optional-dependencies]
-# Optional groups to control PyTorch source selection
-cpu = [
-    "torch>=2.8.0",
-]
-cuda = [
-    "torch>=2.8.0",
-]
-
 [build-system]
 requires = ["maturin>=1.7,<2.0"]
 build-backend = "maturin"
@@ -43,31 +34,6 @@ dev = [
     "maturin>=1.9.4",
     "pytest>=8.0.0",
 ]
-cuda = [
-    "cuda", # refers to the above optional dependency group
-]
-
-[tool.uv]
-default-groups = ["cuda"]
-
-[tool.uv.sources]
-torch = [
-    { index = "pytorch-cpu", marker = "platform_system == 'Darwin'"},
-    { index = "pytorch-cpu", extra = "cpu" },
-    { index = "pytorch-cu128", extra = "cuda"},
-]
-
-# CPU-only index
-[[tool.uv.index]]
-name = "pytorch-cpu"
-url = "https://download.pytorch.org/whl/cpu"
-explicit = true
-
-# CUDA 12.8 index
-[[tool.uv.index]]
-name = "pytorch-cu128"
-url = "https://download.pytorch.org/whl/cu128"
-explicit = true
 
 [tool.pytest.ini_options]
 markers = [