Pin exactly torch 2.9.1 for nemotron-ocr extra

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

Author: cau-git

pyproject.toml

@@ -91,7 +91,11 @@ docling-tools = "docling.cli.tools:app"
 
 [project.optional-dependencies]
 easyocr = ['easyocr (>=1.7,<2.0)']
-nemotron-ocr = ['nemotron-ocr (>=1.0.1,<2.0.0) ; python_version == "3.12" and sys_platform == "linux" and platform_machine == "x86_64"']
+nemotron-ocr = [
+  'nemotron-ocr (>=1.0.1,<2.0.0) ; python_version == "3.12" and sys_platform == "linux" and platform_machine == "x86_64"',
+  'torch (==2.9.1+cu130) ; python_version == "3.12" and sys_platform == "linux" and platform_machine == "x86_64"',
+  'torchvision (==0.24.1+cu130) ; python_version == "3.12" and sys_platform == "linux" and platform_machine == "x86_64"',
+]
 tesserocr = ['tesserocr (>=2.7.1,<3.0.0)']
 ocrmac = ['ocrmac (>=1.0.0,<2.0.0) ; sys_platform == "darwin"']
 vlm = [
@@ -173,6 +177,19 @@ constraints = [
 package = true
 default-groups = "all"
 
+[tool.uv.sources]
+torch = [
+  { index = "pytorch-cu130", extra = "nemotron-ocr" },
+]
+torchvision = [
+  { index = "pytorch-cu130", extra = "nemotron-ocr" },
+]
+
+[[tool.uv.index]]
+name = "pytorch-cu130"
+url = "https://download.pytorch.org/whl/cu130"
+explicit = true
+
 [tool.setuptools.packages.find]
 include = ["docling*"]