ci: configure bors

.github/bors.toml

@@ -0,0 +1,7 @@
+delete_merged_branches = true
+required_approvals = 0
+use_codeowners = false
+status = [
+    "conclusion",
+]
+timeout_sec = 21600

.github/workflows/ci.yml

@@ -4,6 +4,10 @@ on:
   push:
     branches:
       - main
+      # for bors r+
+      - staging
+      # for bors try
+      - trying
   pull_request:
   workflow_dispatch:
 
@@ -43,6 +47,7 @@ jobs:
   check-target:
     needs: [fmt]
     runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
     strategy:
       # If one platform fails, allow the rest to keep testing if `CI-no-fail-fast` label is present
       fail-fast: ${{ !contains(github.event.pull_request.labels.*.name, 'CI-no-fail-fast') }}
@@ -313,6 +318,7 @@ jobs:
       CARGO_PRIMARY_PACKAGE: 1
 
   valgrind:
+    if: github.event_name != 'pull_request'
     needs: [fmt]
     runs-on: ubuntu-latest
     steps:
@@ -336,6 +342,7 @@ jobs:
       TRYBUILD: overwrite
 
   careful:
+    if: github.event_name != 'pull_request'
     needs: [fmt]
     runs-on: ubuntu-latest
     steps:
@@ -387,6 +394,7 @@ jobs:
 
   emscripten:
     name: emscripten
+    if: github.event_name != 'pull_request'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
@@ -416,3 +424,24 @@ jobs:
         run: nox -s build-emscripten
       - name: Test
         run: nox -s test-emscripten
+  
+  conclusion:
+    needs:
+      - fmt
+      - clippy
+      - check-target
+      - build
+      - valgrind
+      - careful
+      - coverage
+      - emscripten
+    if: always()
+    runs-on: ubuntu-latest
+    steps:
+      - name: Result
+        run: |
+          jq -C <<< "${needs}"
+          # Check if all needs were successful or skipped.
+          "$(jq -r 'all(.result as $result | (["success", "skipped"] | contains([$result])))' <<< "${needs}")"
+        env:
+          needs: ${{ toJson(needs) }}