[3.13] gh-134309: Add ``github.actor`` to the GitHub Actions concurrency key (GH...

gh-134309: Add ``github.actor`` to the GitHub Actions concurrency key (GH-134310)

When inexperienced users create a PR from their default branch, all of the concurrency keys
collide as there is no namespacing. This becomes an issue at events with many new contributors,
where workflow runs are cancelled on other pull requests.
Disambiguate by adding the username of the relevant 'actor' to the concurrency key.
(cherry picked from commit 979d81a17905e922d32fb1671f9ed394e0ffbda6)

Authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Kira <coldcaption@gmail.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Sviatoslav Sydorenko <sviat@redhat.com>
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 05d0e3a0c70556c065464c2e33499f615b2e9931..3d1d1e4ed5db7b0b1d18fecce92592add06a6ab8 100644 (file)
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,7 +15,13 @@ permissions:
   contents: read
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}-reusable
+  # https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#concurrency
+  # 'group' must be a key uniquely representing a PR or push event.
+  # github.workflow is the workflow name
+  # github.actor is the user invoking the workflow
+  # github.head_ref is the source branch of the PR or otherwise blank
+  # github.run_id is a unique number for the current run
+  group: ${{ github.workflow }}-${{ github.actor }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
 
 env: