ci: prevent stale bun2nix dependency hangs

Author: 4evy

.github/workflows/nix.yaml

@@ -92,6 +92,9 @@ jobs:
       - name: Set Up Nix
         uses: ./.github/actions/setup-nix
 
+      - name: Check Generated Bun Dependencies
+        run: just bun-nix-check
+
       - name: Materialize Flake Partitions
         run: |
           nix store add-path nix/dev
@@ -131,7 +134,7 @@ jobs:
     needs: checks
     if: needs.checks.outputs.build-native == 'true'
     runs-on: ubuntu-latest
-    timeout-minutes: 90
+    timeout-minutes: 15
     strategy:
       fail-fast: false
       matrix:

Justfile

@@ -944,6 +944,20 @@ _check-github-actions:
 _check-bun: (doctor 'bun')
     bun run check
 
+# Verify bun2nix's dependency expression matches the independently packaged
+# Hyper Window Tiling extension's Bun lockfile.
+[group('check')]
+bun-nix-check:
+    generated=$(nix run .#bun2nix -- \
+      --lock-file packages/hyper-window-tiling/bun.lock \
+      --copy-prefix packages/hyper-window-tiling)
+    if ! diff -u \
+      packages/hyper-window-tiling/bun.nix \
+      <(printf '%s\n' "$generated"); then
+      printf 'packages/hyper-window-tiling/bun.nix is stale; run `just bun-nix-update`.\n' >&2
+      exit 1
+    fi
+
 # Regenerate bun2nix's dependency expression for the independently packaged
 # Hyper Window Tiling extension after its Bun lockfile changes.
 [group('dev')]