pretty sure this won't work

.github/workflows/release-prs.yml

@@ -1,6 +1,14 @@
 name: Release PR
 
 on:
+  workflow_run:
+    workflows: ["Build artifacts"]
+    branches:
+      # NOTE: make sure any branches here are also valid directory names,
+      # otherwise creating the directory and uploading to s3 will fail
+      - "main"
+    types:
+      - completed
   pull_request:
     types:
       - opened
@@ -10,9 +18,6 @@ on:
 
 jobs:
   release:
-    needs:
-      - build-artifacts-macOS
-      - build-artifacts-Linux
     concurrency: release
     # Only intra-repo PRs are allowed to have PR artifacts uploaded
     if: github.event.pull_request.head.repo.full_name == 'DeterminateSystems/nix-actions-cache' && contains(github.event.pull_request.labels.*.name, 'upload to s3')

.github/workflows/release-tags.yml

@@ -1,15 +1,20 @@
 name: Release Tags
 
 on:
+  workflow_run:
+    workflows: ["Build artifacts"]
+    branches:
+      # NOTE: make sure any branches here are also valid directory names,
+      # otherwise creating the directory and uploading to s3 will fail
+      - "main"
+    types:
+      - completed
   push:
     tags:
       - "v*.*.*"
 
 jobs:
   release:
-    needs:
-      - build-artifacts-macOS
-      - build-artifacts-Linux
     concurrency: release
     runs-on: ubuntu-latest
     permissions: