ci: remove lean CI matrix from pr.yaml (#1474)

Removes the `lean-ci` label mechanism — `check-lean-ci`, `prevent-merge-with-lean-ci`, and the conditional branching in `compute-matrix-filters`. The full CI matrix is now always used on every PR.

This effort is to make default PR CI to be lean at the same time sufficient, rather than adding another flavor.

Authors:
  - Ramakrishna Prabhu (https://github.com/ramakrishnap-nv)

Approvers:
  - Bradley Dice (https://github.com/bdice)

URL: #1474

Author: ramakrishnap-nv

.github/workflows/pr.yaml

@@ -17,8 +17,6 @@ permissions: {}
 jobs:
   pr-builder:
     needs:
-      - check-lean-ci
-      - prevent-merge-with-lean-ci
       - compute-matrix-filters
       - changed-files
       - checks
@@ -41,87 +39,23 @@ jobs:
     if: always()
     with:
       needs: ${{ toJSON(needs) }}
-  check-lean-ci:
-    permissions:
-      contents: read
-      pull-requests: read
-    runs-on: ubuntu-latest
-    outputs:
-      lean_ci_enabled: ${{ steps.check-label.outputs.lean_ci_enabled }}
-    steps:
-      - name: Check for lean-ci label
-        id: check-label
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          # Extract PR number from branch name (pull-request/123 -> 123)
-          PR_NUMBER=$(echo "$GITHUB_REF" | sed 's|refs/heads/pull-request/||')
-          echo "Checking PR #$PR_NUMBER for lean-ci label..."
-
-          # Check if the PR has the 'lean-ci' label
-          if gh pr view "$PR_NUMBER" --repo "${{ github.repository }}" --json labels --jq '.labels[].name' | grep -q "^lean-ci$"; then
-            echo "lean_ci_enabled=true" >> $GITHUB_OUTPUT
-            echo "⚠️  Lean CI is enabled (lean-ci label found)"
-          else
-            echo "lean_ci_enabled=false" >> $GITHUB_OUTPUT
-            echo "✅ Full CI is enabled"
-          fi
-
-  prevent-merge-with-lean-ci:
-    permissions:
-      contents: read
-    runs-on: ubuntu-latest
-    needs: check-lean-ci
-    steps:
-      - name: Check lean-ci status
-        env:
-          LEAN_CI: ${{ needs.check-lean-ci.outputs.lean_ci_enabled }}
-        run: |
-          if [ "$LEAN_CI" == "true" ]; then
-            echo "❌ ERROR: This PR has the 'lean-ci' label enabled."
-            echo "Lean CI is only for testing purposes and should not be merged."
-            echo "Please remove the 'lean-ci' label and run full CI before merging."
-            exit 1
-          else
-            echo "✅ No lean-ci label found. PR can be merged."
-            exit 0
-          fi
   compute-matrix-filters:
-    needs: check-lean-ci
     permissions:
       contents: read
     runs-on: ubuntu-latest
     outputs:
-      conda_lean_filter: ${{ steps.set-filters.outputs.conda_lean_filter }}
-      conda_test_filter: ${{ steps.set-filters.outputs.conda_test_filter }}
-      wheel_lean_filter: ${{ steps.set-filters.outputs.wheel_lean_filter }}
       libcuopt_filter: ${{ steps.set-filters.outputs.libcuopt_filter }}
       cuopt_server_filter: ${{ steps.set-filters.outputs.cuopt_server_filter }}
       cuopt_server_test_filter: ${{ steps.set-filters.outputs.cuopt_server_test_filter }}
       cuopt_sh_client_filter: ${{ steps.set-filters.outputs.cuopt_sh_client_filter }}
     steps:
       - name: Set matrix filters
         id: set-filters
-        env:
-          LEAN_CI: ${{ needs.check-lean-ci.outputs.lean_ci_enabled }}
         run: |
-          if [ "$LEAN_CI" == "true" ]; then
-            echo "conda_lean_filter=[map(select(.ARCH == \"amd64\" and .PY_VER == \"3.11\")) | max_by(.CUDA_VER | split(\".\") | map(tonumber))]" >> $GITHUB_OUTPUT
-            echo "conda_test_filter=[map(select(.ARCH == \"amd64\" and .PY_VER == \"3.13\")) | max_by(.CUDA_VER | split(\".\") | map(tonumber))]" >> $GITHUB_OUTPUT
-            echo "wheel_lean_filter=[map(select(.ARCH == \"amd64\" and .PY_VER == \"3.12\")) | max_by(.CUDA_VER | split(\".\") | map(tonumber))]" >> $GITHUB_OUTPUT
-            echo "libcuopt_filter=[map(select(.ARCH == \"amd64\" and .PY_VER == \"3.12\")) | max_by(.CUDA_VER | split(\".\") | map(tonumber))]" >> $GITHUB_OUTPUT
-            echo "cuopt_server_filter=[map(select(.ARCH == \"amd64\" and .PY_VER == \"3.12\")) | max_by(.CUDA_VER | split(\".\") | map(tonumber))]" >> $GITHUB_OUTPUT
-            echo "cuopt_server_test_filter=[map(select(.ARCH == \"amd64\")) | max_by(.CUDA_VER | split(\".\") | map(tonumber))]" >> $GITHUB_OUTPUT
-            echo "cuopt_sh_client_filter=[map(select(.ARCH == \"amd64\" and .PY_VER == \"3.12\")) | max_by(.CUDA_VER | split(\".\") | map(tonumber))]" >> $GITHUB_OUTPUT
-          else
-            echo "conda_lean_filter=." >> $GITHUB_OUTPUT
-            echo "conda_test_filter=." >> $GITHUB_OUTPUT
-            echo "wheel_lean_filter=." >> $GITHUB_OUTPUT
-            echo "libcuopt_filter=group_by([.ARCH, (.CUDA_VER|split(\".\")|map(tonumber)|.[0])]) | map(max_by(.PY_VER|split(\".\")|map(tonumber)))" >> $GITHUB_OUTPUT
-            echo "cuopt_server_filter=map(select(.ARCH == \"amd64\")) | group_by(.CUDA_VER|split(\".\")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(\".\")|map(tonumber)), (.CUDA_VER|split(\".\")|map(tonumber))]))" >> $GITHUB_OUTPUT
-            echo "cuopt_server_test_filter=map(select(.ARCH == \"amd64\")) | group_by(.CUDA_VER | split(\".\") | map(tonumber) | .[0]) | map(max_by([(.PY_VER | split(\".\") | map(tonumber)), (.CUDA_VER | split(\".\") | map(tonumber))]))" >> $GITHUB_OUTPUT
-            echo "cuopt_sh_client_filter=[map(select(.ARCH == \"amd64\")) | min_by((.PY_VER | split(\".\") | map(tonumber)), (.CUDA_VER | split(\".\") | map(-tonumber)))]" >> $GITHUB_OUTPUT
-          fi
+          echo "libcuopt_filter=group_by([.ARCH, (.CUDA_VER|split(\".\")|map(tonumber)|.[0])]) | map(max_by(.PY_VER|split(\".\")|map(tonumber)))" >> $GITHUB_OUTPUT
+          echo "cuopt_server_filter=map(select(.ARCH == \"amd64\")) | group_by(.CUDA_VER|split(\".\")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(\".\")|map(tonumber)), (.CUDA_VER|split(\".\")|map(tonumber))]))" >> $GITHUB_OUTPUT
+          echo "cuopt_server_test_filter=map(select(.ARCH == \"amd64\")) | group_by(.CUDA_VER | split(\".\") | map(tonumber) | .[0]) | map(max_by([(.PY_VER | split(\".\") | map(tonumber)), (.CUDA_VER | split(\".\") | map(tonumber))]))" >> $GITHUB_OUTPUT
+          echo "cuopt_sh_client_filter=[map(select(.ARCH == \"amd64\")) | min_by((.PY_VER | split(\".\") | map(tonumber)), (.CUDA_VER | split(\".\") | map(-tonumber)))]" >> $GITHUB_OUTPUT
 
   changed-files:
     permissions:
@@ -413,9 +347,8 @@ jobs:
     with:
       build_type: pull-request
       script: ci/build_cpp.sh
-      matrix_filter: ${{ needs.compute-matrix-filters.outputs.conda_lean_filter }}
   conda-cpp-tests:
-    needs: [conda-cpp-build, changed-files, compute-matrix-filters]
+    needs: [conda-cpp-build, changed-files]
     permissions:
       actions: read
       contents: read
@@ -427,7 +360,6 @@ jobs:
     with:
       build_type: pull-request
       script: ci/test_cpp.sh
-      matrix_filter: ${{ needs.compute-matrix-filters.outputs.conda_test_filter }}
     secrets:
       script-env-secret-1-key: CUOPT_S3_URI
       script-env-secret-1-value: ${{ secrets.CUOPT_S3_URI }}
@@ -436,7 +368,7 @@ jobs:
       script-env-secret-3-key: CUOPT_AWS_SECRET_ACCESS_KEY
       script-env-secret-3-value: ${{ secrets.CUOPT_AWS_SECRET_ACCESS_KEY }}
   conda-python-build:
-    needs: [conda-cpp-build, compute-matrix-filters, changed-files]
+    needs: [conda-cpp-build, changed-files]
     # Consumed by conda-python-tests and docs-build.
     if: >-
       fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_conda ||
@@ -452,9 +384,8 @@ jobs:
     with:
       build_type: pull-request
       script: ci/build_python.sh
-      matrix_filter: ${{ needs.compute-matrix-filters.outputs.conda_test_filter }}
   conda-python-tests:
-    needs: [conda-python-build, changed-files, compute-matrix-filters]
+    needs: [conda-python-build, changed-files]
     permissions:
       actions: read
       contents: read
@@ -467,7 +398,6 @@ jobs:
       run_codecov: false
       build_type: pull-request
       script: ci/test_python.sh
-      matrix_filter: ${{ needs.compute-matrix-filters.outputs.conda_test_filter }}
     secrets:
       script-env-secret-1-key: CUOPT_S3_URI
       script-env-secret-1-value: ${{ secrets.CUOPT_S3_URI }}
@@ -528,9 +458,8 @@ jobs:
       script: ci/build_wheel_cuopt.sh
       package-name: cuopt
       package-type: python
-      matrix_filter: ${{ needs.compute-matrix-filters.outputs.wheel_lean_filter }}
   wheel-tests-cuopt:
-    needs: [wheel-build-cuopt, wheel-build-cuopt-sh-client, changed-files, compute-matrix-filters]
+    needs: [wheel-build-cuopt, wheel-build-cuopt-sh-client, changed-files]
     permissions:
       actions: read
       contents: read
@@ -542,7 +471,6 @@ jobs:
     with:
       build_type: pull-request
       script: ci/test_wheel_cuopt.sh
-      matrix_filter: ${{ needs.compute-matrix-filters.outputs.wheel_lean_filter }}
     secrets:
       script-env-secret-1-key: CUOPT_S3_URI
       script-env-secret-1-value: ${{ secrets.CUOPT_S3_URI }}