Remove CMake/C++ references to cugraph-ops

[ChuckHastings]

Delete deprecated cugraph-ops functionality, clean up references to cugraph-ops.

[jameslamb]

Is it safe to remove ALL references to cugraph-ops here? If so, there are many more:

git grep -i 'cugraph.*ops'

For example, all the uses of those now-removed CMake options in build scripts.

CI configs (click me)

cugraph/.github/workflows/build.yaml

Lines 79 to 81 in 050d524

	extra-repo: rapidsai/cugraph-ops
	extra-repo-sha: branch-24.12
	extra-repo-deploy-key: CUGRAPH_OPS_SSH_PRIVATE_DEPLOY_KEY

cugraph/.github/workflows/build.yaml

Lines 103 to 105 in 050d524

	extra-repo: rapidsai/cugraph-ops
	extra-repo-sha: branch-24.12
	extra-repo-deploy-key: CUGRAPH_OPS_SSH_PRIVATE_DEPLOY_KEY

cugraph/.github/workflows/pr.yaml

Lines 140 to 142 in 050d524

	extra-repo: rapidsai/cugraph-ops
	extra-repo-sha: branch-24.12
	extra-repo-deploy-key: CUGRAPH_OPS_SSH_PRIVATE_DEPLOY_KEY

cugraph/.github/workflows/pr.yaml

Lines 159 to 161 in 050d524

	extra-repo: rapidsai/cugraph-ops
	extra-repo-sha: branch-24.12
	extra-repo-deploy-key: CUGRAPH_OPS_SSH_PRIVATE_DEPLOY_KEY

cugraph/.github/workflows/test.yaml

Line 26 in 050d524

symbol_exclusions: (cugraph::ops|hornet|void writeEdgeCountsKernel|void markUniqueOffsetsKernel)

build scripts (click me)

cugraph/build.sh

Line 46 in 050d524

--without_cugraphops

cugraph/build.sh

Line 110 in 050d524

BUILD_WITH_CUGRAPHOPS=ON

cugraph/build.sh

Line 271 in 050d524

-DUSE_CUGRAPH_OPS=${BUILD_WITH_CUGRAPHOPS} \

many more in build.sh

cugraph/ci/build_wheel_cugraph.sh

Line 31 in 050d524

export SKBUILD_CMAKE_ARGS="-DDETECT_CONDA_ENV=OFF;-DFIND_CUGRAPH_CPP=OFF;-DCPM_cugraph-ops_SOURCE=${GITHUB_WORKSPACE}/cugraph-ops/${EXTRA_CMAKE_ARGS}"

cugraph/ci/build_wheel_pylibcugraph.sh

Line 18 in 050d524

export SKBUILD_CMAKE_ARGS="-DDETECT_CONDA_ENV=OFF;-DFIND_CUGRAPH_CPP=OFF;-DCPM_cugraph-ops_SOURCE=${GITHUB_WORKSPACE}/cugraph-ops/${EXTRA_CMAKE_ARGS}"

dependency on 'libcugraphops' and 'pylibcugraphops' (click me)

cugraph/dependencies.yaml

Lines 23 to 24 in 050d524

	# Deprecate pylibcugraphops
	- depends_on_pylibcugraphops

cugraph/dependencies.yaml

Lines 921 to 944 in 050d524

	depends_on_pylibcugraphops:
	common:
	- output_types: conda
	packages:
	- &pylibcugraphops_unsuffixed pylibcugraphops==24.12.*,>=0.0.0a0
	- 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:
	- pylibcugraphops-cu12==24.12.*,>=0.0.0a0
	- matrix:
	cuda: "11.*"
	cuda_suffixed: "true"
	packages:
	- pylibcugraphops-cu11==24.12.*,>=0.0.0a0
	- {matrix: null, packages: [*pylibcugraphops_unsuffixed]}

cugraph/dependencies.yaml

Lines 429 to 430 in 050d524

	# Deprecate libcugraphops
	- libcugraphops==24.12.*,>=0.0.0a0

cugraph/conda/recipes/libcugraph/meta.yaml

Line 72 in 050d524

- libcugraphops ={{ minor_version }}

and several more, see that git grep output

[bdice]

@jameslamb Since CI has already passed here I am inclined to just accept this as-is and then iteratively rip out more. Maybe we can limit this PR's scope to CMake / C++ removal, and then do the removals you suggested (mostly CI, build scripts, dependencies, etc.) in a follow-up PR. I started to look into this as well and noticed there are quite a few references in the GNN code, which is being split out, so there may be potentially duplicate work that we should defer until after that split.

[jameslamb]

Ok yeah fair enough, let's stop here and do more in follow-ups.

[bdice]

Because this is no longer using specialized logic in the exception clause, the "except: raise" pattern is unneeded. We can remove the try entirely.