Readjust the trampoline CI check

.github/workflows/ci.yml

@@ -22,6 +22,7 @@ jobs:
       run-checks: ${{ steps.plan.outputs.run_checks }}
       test-publish: ${{ steps.plan.outputs.test_publish }}
       test-windows-trampoline: ${{ steps.plan.outputs.test_windows_trampoline }}
+      test-windows-trampoline-check-binary: ${{ steps.plan.outputs.test_windows_trampoline_check_binary }}
       save-rust-cache: ${{ steps.plan.outputs.save_rust_cache }}
       run-bench: ${{ steps.plan.outputs.run_bench }}
       test-smoke: ${{ steps.plan.outputs.test_smoke }}
@@ -53,6 +54,7 @@ jobs:
           HAS_BUILD_SKIP_RELEASE_LABEL: ${{ contains(github.event.pull_request.labels.*.name, 'build:skip-release') }}
           HAS_BUILD_RELEASE_LABEL: ${{ contains(github.event.pull_request.labels.*.name, 'build:release') }}
           HAS_BUILD_PUSH_DOCKER_LABEL: ${{ contains(github.event.pull_request.labels.*.name, 'build:push-docker') }}
+          HAS_BUILD_WINDOWS_TRAMPOLINE_LABEL: ${{ contains(github.event.pull_request.labels.*.name, 'build:windows-trampoline') }}
           BASE_SHA: ${{ github.event.pull_request.base.sha }}
         run: |
           [[ "$GH_REF" == "refs/heads/main" ]] && on_main_branch=1
@@ -67,6 +69,7 @@ jobs:
           [[ "$HAS_BUILD_SKIP_RELEASE_LABEL" == "true" ]] && has_build_skip_release_label=1
           [[ "$HAS_BUILD_RELEASE_LABEL" == "true" ]] && has_build_release_label=1
           [[ "$HAS_BUILD_PUSH_DOCKER_LABEL" == "true" ]] && has_build_push_docker_label=1
+          [[ "$HAS_BUILD_WINDOWS_TRAMPOLINE_LABEL" == "true" ]] && has_build_windows_trampoline_label=1
 
           # Detect changed files
           while IFS= read -r file; do
@@ -83,6 +86,7 @@ jobs:
             [[ "$file" =~ ^crates/uv-publish/ || "$file" =~ ^scripts/publish/ || "$file" == "crates/uv/src/commands/publish.rs" ]] && publish_code_changed=1
             [[ "$file" == ".github/workflows/test-windows-trampolines.yml" ]] && trampoline_workflow_changed=1
             [[ "$file" =~ ^crates/uv-trampoline/ || "$file" =~ ^crates/uv-trampoline-builder/ ]] && trampoline_code_changed=1
+            [[ "$file" =~ ^crates/uv-trampoline/.*\.rs$ || "$file" =~ ^crates/uv-trampoline-builder/trampolines/ ]] && trampoline_repro_changed=1
             [[ "$file" == "scripts/build-trampolines.sh" || "$file" == "scripts/check-trampoline-version-consistency.py" ]] && trampoline_scripts_changed=1
             [[ "$file" =~ ^crates/uv-build/ ]] && uv_build_changed=1
             [[ "$file" == "Dockerfile" ]] && dockerfile_changed=1
@@ -108,7 +112,8 @@ jobs:
           [[ ! $has_skip_label && ! $has_build_skip_label && ! $has_build_skip_release_label && ($release_build_changed || $has_build_release_label) ]] && build_release_binaries=1
           [[ ! $has_skip_label ]] && run_checks=1
           [[ $publish_changed || $has_publish_label || $has_extended_label || $on_main_branch ]] && test_publish=1
-          [[ ! $has_skip_label && ($trampoline_code_changed || $trampoline_scripts_changed || $trampoline_workflow_changed || $rust_deps_changed || $on_main_branch) ]] && test_windows_trampoline=1
+          [[ ! $has_skip_label && ($trampoline_code_changed || $trampoline_scripts_changed || $trampoline_workflow_changed || $rust_deps_changed || $has_build_windows_trampoline_label || $on_main_branch) ]] && test_windows_trampoline=1
+          [[ ! $has_skip_label && ($trampoline_repro_changed || $has_build_windows_trampoline_label) ]] && test_windows_trampoline_check_binary=1
           [[ $on_main_branch || $cache_relevant_changed ]] && save_rust_cache=1
           [[ ! $has_skip_label && ($any_rust_changed || $bench_workflow_changed || $on_main_branch) ]] && run_bench=1
           [[ ! $has_skip_label ]] && test_smoke=1
@@ -128,6 +133,7 @@ jobs:
             out run_checks              "$run_checks"
             out test_publish            "$test_publish"
             out test_windows_trampoline "$test_windows_trampoline"
+            out test_windows_trampoline_check_binary "$test_windows_trampoline_check_binary"
             out save_rust_cache         "$save_rust_cache"
             out run_bench               "$run_bench"
             out test_smoke              "$test_smoke"
@@ -193,6 +199,8 @@ jobs:
     needs: plan
     if: ${{ needs.plan.outputs.test-windows-trampoline == 'true' }}
     uses: ./.github/workflows/test-windows-trampolines.yml
+    with:
+      trampoline-build: ${{ needs.plan.outputs.test-windows-trampoline-check-binary }}
 
   build-dev-binaries:
     needs: plan

.github/workflows/test-windows-trampolines.yml

@@ -1,5 +1,11 @@
 on:
   workflow_call:
+    inputs:
+      trampoline-build:
+        description: "Whether to check the committed trampoline binaries"
+        required: false
+        type: string
+        default: "false"
 
 permissions: {}
 
@@ -25,15 +31,14 @@ jobs:
       - name: "Check windows crate versions match"
         run: uv run --no-project scripts/check-trampoline-version-consistency.py
 
-  # Verify committed trampolines match a reproducible Docker build
-  windows-trampoline-reproducible:
-    # uv version bumps (e.g., https://github.com/astral-sh/uv/pull/18805) cause the reproducible
-    # check to fail and these are not regenerated as a part of the release process so we temporarily
-    # disable this job
-    if: false
+  # Verify committed trampolines were built with the Docker image
+  windows-trampoline-check-binary:
+    # Only run when trampoline sources changed or the `build:windows-trampoline`
+    # label is set, as otherwise uv version bumps cause the check to fail.
+    if: ${{ inputs.trampoline-build == 'true' }}
     timeout-minutes: 30
     runs-on: ubuntu-latest
-    name: "check reproducible build"
+    name: "check binary"
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with: