Add depends_on_cudf

dependencies.yaml

@@ -57,6 +57,7 @@ files:
       table: project.optional-dependencies
       key: test
     includes:
+      - depends_on_cudf
       - test_python_common
       - test_python_nx_cugraph
 
@@ -196,6 +197,30 @@ dependencies:
             packages: &cupy_packages_cu11
               - cupy-cuda11x>=12.0.0
           - {matrix: null, packages: *cupy_packages_cu11}
+  depends_on_cudf:
+    common:
+      - output_types: conda
+        packages:
+          - &cudf_unsuffixed cudf==24.12.*
+      - output_types: requirements
+        packages:
+          # pip recognizes the index as a global option for the requirements.txt file
+          - --extra-index-url=https://pypi.nvidia.com
+          - --extra-index-url=https://pypi.anaconda.org/rapidsai-wheels-nightly/simple
+    specific:
+      - output_types: [requirements, pyproject]
+        matrices:
+          - matrix:
+              cuda: "12.*"
+              cuda_suffixed: "true"
+            packages:
+              - cudf-cu12==24.12.*
+          - matrix:
+              cuda: "11.*"
+              cuda_suffixed: "true"
+            packages:
+              - cudf-cu11==24.12.*
+          - {matrix: null, packages: [*cudf_unsuffixed]}
   depends_on_pylibcugraph:
     common:
       - output_types: conda

python/nx-cugraph/pyproject.toml

@@ -40,6 +40,7 @@ dependencies = [
 
 [project.optional-dependencies]
 test = [
+    "cudf==24.12.*",
     "pandas",
     "pytest",
     "pytest-benchmark",