Enable the GitHub merge queue (servo#29989)

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

Author: mrobinson

.github/workflows/linux-wpt.yml

@@ -1,4 +1,4 @@
-name: Linux WPT workflow
+name: Linux WPT Tests
 on:
   workflow_call:
     inputs:
@@ -15,7 +15,7 @@ env:
 
 jobs:
   linux-wpt:
-    name: Linux WPT Tests ${{ inputs.layout }}
+    name: WPT ${{ inputs.layout }}
     runs-on: ubuntu-20.04
     env:
       max_chunk_id: 20
@@ -90,7 +90,7 @@ jobs:
             wpt-jsonsummary.${{ matrix.chunk_id }}.log
 
   report-test-results:
-    name: Reporting test results
+    name: Report WPT Results
     runs-on: ubuntu-latest
     if: ${{ always() && !cancelled() && (github.ref_name == 'try-wpt' || github.ref_name == 'try-wpt-2020' || inputs.wpt == 'test') }}
     needs:

.github/workflows/linux.yml

@@ -1,4 +1,4 @@
-name: Linux workflow
+name: Linux
 on:
   workflow_call:
     inputs:
@@ -29,7 +29,7 @@ on:
       layout:
         required: false
         type: choice
-        options: ["2013", "2020", "all"]
+        options: ["none", "2013", "2020", "all"]
       unit-tests:
         required: false
         default: false
@@ -50,7 +50,7 @@ env:
   CARGO_INCREMENTAL: 0
 
 jobs:
-  build-linux:
+  build:
     name: Build
     runs-on: ubuntu-20.04
     steps:
@@ -113,33 +113,33 @@ jobs:
           name: release-binary
           path: target.tar.gz
 
-  linux-wpt-2020:
+  wpt-2020:
     if: ${{ github.ref_name == 'try-wpt-2020' || inputs.layout == '2020' || inputs.layout == 'all' }}
     name: Linux WPT Tests 2020
-    needs: ["build-linux"]
+    needs: ["build"]
     uses: ./.github/workflows/linux-wpt.yml
     with:
       wpt: ${{ inputs.wpt }}
       layout: "layout-2020"
 
-  linux-wpt-2013:
+  wpt-2013:
     if: ${{ github.ref_name == 'try-wpt' || inputs.layout == '2013' || inputs.layout == 'all' }}
     name: Linux WPT Tests 2013
-    needs: ["build-linux"]
+    needs: ["build"]
     uses: ./.github/workflows/linux-wpt.yml
     with:
       wpt: ${{ inputs.wpt }}
       layout: "layout-2013"
 
-  build_result:
-    name: homu build finished
+  result:
+    name: Result
     runs-on: ubuntu-latest
     if: always()
     # needs all build to detect cancellation
     needs:
-      - "build-linux"
-      - "linux-wpt-2020"
-      - "linux-wpt-2013"
+      - "build"
+      - "wpt-2020"
+      - "wpt-2013"
 
     steps:
       - name: Mark the job as successful
@@ -148,3 +148,4 @@ jobs:
       - name: Mark the job as unsuccessful
         run: exit 1
         if: contains(join(needs.*.result, ','), 'failure') || contains(join(needs.*.result, ','), 'cancelled')
+

.github/workflows/mac.yml

@@ -1,4 +1,4 @@
-name: Mac workflow
+name: Mac
 
 on:
   workflow_call:
@@ -36,7 +36,7 @@ env:
   CARGO_INCREMENTAL: 0
 
 jobs:
-  build-mac:
+  build:
     name: Build
     runs-on: macos-12
     steps:
@@ -143,13 +143,13 @@ jobs:
   #           test-wpt.${{ matrix.chunk_id }}.log
   #           filtered-wpt-summary.${{ matrix.chunk_id }}.log
 
-  build_result:
-    name: homu build finished
+  result:
+    name: Result
     runs-on: ubuntu-latest
     if: always()
     # needs all build to detect cancellation
     needs:
-      - "build-mac"
+      - "build"
 
     steps:
       - name: Mark the job as successful

.github/workflows/main.yml

@@ -1,22 +1,27 @@
-name: Merge queue and try
+name: Main
 
 on:
   push:
-    branches: ["auto", "try"]
-
-  # Used by GH merge queue for landing PRs
+    # Run the entire pipeline for 'master' even though the merge queue already runs checks
+    # for every change. This just offers an extra layer of testing and covers the case of
+    # random force pushes.
+    branches: ["master", "try"]
+  pull_request:
+    types: ['opened', 'synchronize']
+    branches: ["**"]
   merge_group:
     types: [checks_requested]
-
-  # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
 
 jobs:
   decision:
-    name: Decision job
+    name: Decision
     runs-on: ubuntu-20.04
     steps:
-      - name: Previous successful build check
+      # If an identical build exists that suceeded, skip this workflow run. We don't do
+      # this check for pull_request and merge_group events, out of caution.
+      - name: Skip previous identical builds
+        if: ${{ github.event_name != 'pull_request' && github.event_name != 'merge_group' }}
         uses: actions/github-script@v6
         with:
           script: |
@@ -35,13 +40,15 @@ jobs:
 
   build-win:
     name: Windows
+    if: ${{ github.event_name == 'push' || github.event_name == 'merge_group' }}
     needs: ["decision"]
     uses: ./.github/workflows/windows.yml
     with:
       unit-tests: true
 
   build-mac:
     name: Mac
+    if: ${{ github.event_name == 'push' || github.event_name == 'merge_group' }}
     needs: ["decision"]
     uses: ./.github/workflows/mac.yml
     with:
@@ -53,11 +60,11 @@ jobs:
     uses: ./.github/workflows/linux.yml
     with:
       wpt: 'test'
-      layout: 'all'
-      unit-tests: true
+      layout: ${{ (github.event_name == 'push' || github.event_name == 'merge_group') && 'all' || 'none' }}
+      unit-tests: ${{ github.event_name == 'push' || github.event_name == 'merge_group' }}
 
   build_result:
-    name: homu build finished
+    name: Result
     runs-on: ubuntu-latest
     if: always()
     # needs all build to detect cancellation

.github/workflows/pull-request.yml

@@ -1,4 +1,4 @@
-name: Windows workflow
+name: Windows
 
 on:
   workflow_call:
@@ -34,7 +34,7 @@ env:
   CARGO_TARGET_DIR: C:\\a\\servo\\servo\\target
 
 jobs:
-  build-win:
+  build:
     name: Build
     runs-on: windows-2019
     steps:
@@ -73,7 +73,7 @@ jobs:
           path: C:\\a\\servo\\servo\\target\\cargo-timings-*
       - name: Package
         run: python mach package --release
-      - name: Upload Package
+      - name: Upload package
         uses: actions/upload-artifact@v3
         with:
           name: win
@@ -82,7 +82,7 @@ jobs:
           # Bundle: C:\a\servo\servo\target\release\msi\Servo.exe
           # Zip: C:\a\servo\servo\target\release\msi\Servo.zip
           path: C:\\a\\servo\\servo\\target/release/msi/Servo.exe
-      - name: Upload
+      - name: Upload nightly
         if: ${{ inputs.upload }}
         run: |
           python mach upload-nightly windows-msvc --secret-from-environment `
@@ -92,13 +92,13 @@ jobs:
           NIGHTLY_REPO_TOKEN: ${{ secrets.NIGHTLY_REPO_TOKEN }}
           NIGHTLY_REPO: ${{ github.repository_owner }}/servo-nightly-builds
 
-  build_result:
-    name: homu build finished
+  result:
+    name: Result
     runs-on: ubuntu-latest
     if: always()
     # needs all build to detect cancellation
     needs:
-      - "build-win"
+      - "build"
 
     steps:
       - name: Mark the job as successful
@@ -107,3 +107,4 @@ jobs:
       - name: Mark the job as unsuccessful
         run: exit 1
         if: contains(join(needs.*.result, ','), 'failure') || contains(join(needs.*.result, ','), 'cancelled')
+

.github/workflows/windows.yml

@@ -153,7 +153,7 @@ def _default_walk(self):
                 yield os.path.join(root, f)
 
     def _git_changed_files(self):
-        args = ["git", "log", "-n1", "--merges", "--format=%H"]
+        args = ["git", "log", "-n1", "--committer", "noreply@github.com", "--format=%H"]
         last_merge = subprocess.check_output(args, universal_newlines=True).strip()
         if not last_merge:
             return

python/tidy/tidy.py

@@ -223,9 +223,17 @@ def get_github_context_information() -> GithubContextInformation:
         run_id = github_context['run_id']
         build_url = f"{repo_url}/actions/runs/{run_id}"
 
-        commit_title = github_context["event"]["head_commit"]["message"]
-        match = re.match(r"^Auto merge of #(\d+)", commit_title)
-        pr_url = f"{repo_url}/pull/{match.group(1)}" if match else None
+        commit_title = "<no title>"
+        if "merge_group" in github_context["event"]:
+            commit_title = github_context["event"]["merge_group"]["head_commit"]["message"]
+        if "head_commit" in github_context["event"]:
+            commit_title = github_context["event"]["head_commit"]["message"]
+
+        pr_url = None
+        match = re.match(r"^Auto merge of #(\d+)", commit_title) or \
+            re.match(r"\(#(\d+)\)", commit_title)
+        if match:
+            pr_url = f"{repo_url}/pull/{match.group(1)}" if match else None
 
         return GithubContextInformation(
             build_url,