mach try & partitioned try jobs

.github/workflows/main.yml

@@ -35,6 +35,7 @@ jobs:
               });
 
   build-win:
+    if: contains(fromJSON('["auto", "try", "try-windows"]'), github.ref_name)
     name: Build (Windows)
     runs-on: windows-2019
     needs: ["decision"]
@@ -60,6 +61,7 @@ jobs:
         run: python mach smoketest --angle
 
   build-mac:
+    if: contains(fromJSON('["auto", "try", "try-mac"]'), github.ref_name)
     name: Build (macOS)
     runs-on: macos-12
     needs: ["decision"]
@@ -157,6 +159,7 @@ jobs:
   #           filtered-wpt-summary.${{ matrix.chunk_id }}.log
 
   build-linux:
+    if: contains(fromJSON('["auto", "try", "try-linux", "try-wpt"]'), github.ref_name)
     name: Build (Linux)
     runs-on: ubuntu-20.04
     needs: ["decision"]
@@ -183,6 +186,7 @@ jobs:
           path: target.tar.gz
 
   linux-wpt:
+    if: contains(fromJSON('["auto", "try", "try-wpt"]'), github.ref_name)
     name: Linux WPT Tests
     runs-on: ubuntu-20.04
     needs: ["build-linux"]
@@ -241,7 +245,7 @@ jobs:
   report_test_results:
     name: Reporting test results
     runs-on: ubuntu-latest
-    if: always()
+    if: "!cancelled() && success('build-linux') && contains(fromJSON('[\"auto\", \"try\", \"try-wpt\"]'), github.ref_name)"
     needs:
       - "linux-wpt"
     steps:
@@ -269,16 +273,20 @@ jobs:
   build_result:
     name: homu build finished
     runs-on: ubuntu-latest
+    if: always()
+    # needs all build to detect cancellation
     needs:
+      - "decision"
       - "build-win"
       - "build-mac"
+      - "build-linux"
       - "linux-wpt"
       # - "mac-wpt"
 
     steps:
       - name: Mark the job as successful
         run: exit 0
-        if: success()
+        if: "!contains(join(needs.*.result, ','), 'failure') && !contains(join(needs.*.result, ','), 'cancelled')"
       - name: Mark the job as unsuccessful
         run: exit 1
-        if: "!success()"
+        if: contains(join(needs.*.result, ','), 'failure') || contains(join(needs.*.result, ','), 'cancelled')