Move dependencies from requirements.txt to an optional packaging extra

Author: kkraus14

.github/workflows/test-wheel-linux.yml

@@ -324,8 +324,8 @@ jobs:
           fi
           popd
 
+          pip install $(ls *.whl)[test]
           pushd ./cuda_bindings
-          pip install -r requirements.txt
           ${SANITIZER_CMD} pytest -rxXs -v tests/
 
           # It is a bit convoluted to run the Cython tests against CTK wheels,

.github/workflows/test-wheel-windows.yml

@@ -252,8 +252,8 @@ jobs:
           }
           Pop-Location
 
+          pip install "$((Get-ChildItem -Filter *.whl).FullName)[test]"
           Push-Location ./cuda_bindings
-          pip install -r requirements.txt
           pytest -rxXs -v tests/
           # skip Cython tests for now (NVIDIA/cuda-python#466)
           Pop-Location

cuda_bindings/README.md

@@ -12,7 +12,7 @@ This subpackage adheres to the developing practices described in the parent meta
 
 ## Testing
 
-Latest dependencies can be found in [requirements.txt](https://github.com/NVIDIA/cuda-python/blob/main/cuda_bindings/requirements.txt).
+Testing dependencies can be installed using the `[test]` optional dependency identifier. For example, `pip install -v -e .[test]`.
 
 Multiple testing options are available:
 

cuda_bindings/pyproject.toml

@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: LicenseRef-NVIDIA-SOFTWARE-LICENSE
 
 [build-system]
-requires = ["setuptools>=77.0.0", "cython", "pyclibrary"]
+requires = ["setuptools>=77.0.0", "cython>=3.0", "pyclibrary>=0.1.7"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -37,6 +37,13 @@ all = [
     "nvidia-nvjitlink-cu12>=12.3",
 ]
 
+tests = [
+    "numpy>=1.21.1",
+    "pytest>=6.2.4",
+    "pytest-benchmark>=3.4.1",
+    "llvmlite"
+]
+
 [project.urls]
 Repository = "https://github.com/NVIDIA/cuda-python"
 Documentation = "https://nvidia.github.io/cuda-python/"