Create "All required checks succeeded" check run.

.github/workflows/check-required.yml

@@ -0,0 +1,60 @@
+name: Check required jobs
+
+# This workflow is triggered when a workflow run for the CI is completed.
+# It checks if the "All required checks done" job was actually successful
+# (and not just skipped) and creates a check run if that is the case. The
+# check run can be used to protect the main branch from being merged if the
+# CI is not passing.
+
+on:
+  workflow_run:
+    types: [completed]
+    workflows:
+      - CI
+      - Deploy Site with Jekyll, GitHub Pages
+
+permissions:
+  actions: read
+  checks: write
+
+jobs:
+  required-jobs:
+    name: Check required jobs
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v6
+        with:
+          script: |
+            // list jobs for worklow run attempt
+            const { data: { jobs } } = await github.rest.actions.listJobsForWorkflowRunAttempt({
+              owner: context.payload.repository.owner.login,
+              repo: context.payload.repository.name,
+              run_id: context.payload.workflow_run.id,
+              attempt_number: context.payload.workflow_run.run_attempt,
+            });
+            // check if required job was successful
+            var success = false;
+            core.info(`Checking jobs for workflow run ${context.payload.workflow_run.html_url}`);
+            jobs.forEach(job => {
+              var mark = '-'
+              if (job.name === 'All required checks done' && job.conclusion === 'success') {
+                success = true;
+                mark = '✅';
+              }
+              core.info(`${mark} ${job.name}: ${job.conclusion}`);
+            });
+            // create check run if job was successful
+            if (success) {
+              await github.rest.checks.create({
+                owner: context.payload.repository.owner.login,
+                repo: context.payload.repository.name,
+                name: 'All required checks succeeded',
+                head_sha: context.payload.workflow_run.head_sha,
+                status: 'completed',
+                conclusion: 'success',
+                output: {
+                  title: 'All required checks succeeded',
+                  summary: `See [workflow run](${context.payload.workflow_run.html_url}) for details.`,
+                },
+              });
+            }

.github/workflows/ci.yml

@@ -116,7 +116,7 @@ jobs:
             )
           ) && os+=("macos-latest")
 
-          [ "${{ steps.is-fork.outputs.fork }}" == "false" ] && os+=("cuda-${{ github.run_id }}-${{ github.run_attempt }}")
+          [ "${{ steps.is-fork.outputs.fork }}" == "false" ] && os+=("cuda")
 
           echo "os=$(jq -cn '$ARGS.positional' --args ${os[@]})" >> $GITHUB_OUTPUT
     outputs:
@@ -162,46 +162,38 @@ jobs:
             library: ILGPU.Algorithms
             framework: net471
       fail-fast: false
-    runs-on: ${{ contains(matrix.os, 'cuda') && format('{0}-{1}-{2}', matrix.os, matrix.library, matrix.framework) || matrix.os }}
+    runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
         uses: actions/checkout@v3
 
       - name: Setup the latest .NET Core 3.1 SDK
         if: matrix.framework == 'netcoreapp3.1'
         uses: actions/[email protected]
-        env:
-          DOTNET_INSTALL_DIR: ${{ matrix.framework == 'cuda' && '~/.' }}
         with:
           dotnet-version: 3.1.x
 
       - name: Setup the latest .NET 5 SDK
         if: matrix.framework == 'net5.0'
         uses: actions/[email protected]
-        env:
-          DOTNET_INSTALL_DIR: ${{ matrix.framework == 'cuda' && '~/.' }}
         with:
           dotnet-version: 5.0.x
 
       - name: Setup the latest .NET 6 SDK
         if: matrix.framework == 'net6.0'
         uses: actions/[email protected]
-        env:
-          DOTNET_INSTALL_DIR: ${{ matrix.framework == 'cuda' && '~/.' }}
         with:
           dotnet-version: 6.0.x
 
       - name: Setup the latest .NET 7 SDK
         uses: actions/[email protected]
-        env:
-          DOTNET_INSTALL_DIR: ${{ matrix.framework == 'cuda' && '~/.' }}
         with:
           dotnet-version: 7.0.x
 
       - name: Set test flavor
         id: test-flavor
         shell: bash
-        run: echo "flavor=$([[ "${{ matrix.os }}" == cuda-* ]] && echo "Cuda" || echo "CPU")" >> $GITHUB_OUTPUT
+        run: echo "flavor=$([[ "${{ matrix.os }}" == cuda ]] && echo "Cuda" || echo "CPU")" >> $GITHUB_OUTPUT
 
       - name: Build and test
         run: dotnet test Src/${{ matrix.library }}.Tests.${{ steps.test-flavor.outputs.flavor }} --configuration=Release --framework=${{ matrix.framework }} -p:TreatWarningsAsErrors=true
@@ -341,6 +333,9 @@ jobs:
 
   # Virtual job that can be configured as a required check before a PR can be
   # merged.
+  # As GitHub considers a check as successful if it is skipped, we need to
+  # check its status in another workflow (check-required.yml) and create a
+  # check there.
   all-required-checks-done:
     needs:
       - check-style

.github/workflows/deploy-site.yml

@@ -77,6 +77,11 @@ jobs:
         uses: actions/upload-pages-artifact@v2
       ##### GitHub Pages #####
 
+  # Virtual job that can be configured as a required check before a PR can be
+  # merged.
+  # As GitHub considers a check as successful if it is skipped, we need to
+  # check its status in another workflow (check-required.yml) and create a
+  # check there.
   all-required-checks-done:
     needs:
       - build