fix(ci): Allow prerelease packages and fix runtime type imports

.github/workflows/cross-platform-test.yml

@@ -189,7 +189,7 @@ jobs:
           find ./base-dist -name "*.whl" -type f
           WHEEL_FILE=$(find ./base-dist -name "*.whl" -type f | head -1)
           if [ -n "$WHEEL_FILE" ]; then
-            uv pip install --python ./test-env/Scripts/python.exe "$WHEEL_FILE"
+            uv pip install --prerelease=allow --python ./test-env/Scripts/python.exe "$WHEEL_FILE"
           else
             echo "No wheel file found in ./base-dist/"
             exit 1
@@ -231,7 +231,7 @@ jobs:
           find ./base-dist -name "*.whl" -type f
           WHEEL_FILE=$(find ./base-dist -name "*.whl" -type f | head -1)
           if [ -n "$WHEEL_FILE" ]; then
-            uv pip install --python ./test-env/bin/python "$WHEEL_FILE"
+            uv pip install --prerelease=allow --python ./test-env/bin/python "$WHEEL_FILE"
           else
             echo "No wheel file found in ./base-dist/"
             exit 1
@@ -475,7 +475,7 @@ jobs:
           find ./base-dist -name "*.whl" -type f
           WHEEL_FILE=$(find ./base-dist -name "*.whl" -type f | head -1)
           if [ -n "$WHEEL_FILE" ]; then
-            uv pip install --python ./test-env/Scripts/python.exe "$WHEEL_FILE"
+            uv pip install --prerelease=allow --python ./test-env/Scripts/python.exe "$WHEEL_FILE"
           else
             echo "No wheel file found in ./base-dist/"
             exit 1
@@ -489,7 +489,7 @@ jobs:
           find ./main-dist -name "*.whl" -type f
           WHEEL_FILE=$(find ./main-dist -name "*.whl" -type f | head -1)
           if [ -n "$WHEEL_FILE" ]; then
-            uv pip install --python ./test-env/Scripts/python.exe "$WHEEL_FILE"
+            uv pip install --prerelease=allow --python ./test-env/Scripts/python.exe "$WHEEL_FILE"
           else
             echo "No wheel file found in ./main-dist/"
             exit 1
@@ -517,7 +517,7 @@ jobs:
           find ./base-dist -name "*.whl" -type f
           WHEEL_FILE=$(find ./base-dist -name "*.whl" -type f | head -1)
           if [ -n "$WHEEL_FILE" ]; then
-            uv pip install --python ./test-env/bin/python "$WHEEL_FILE"
+            uv pip install --prerelease=allow --python ./test-env/bin/python "$WHEEL_FILE"
           else
             echo "No wheel file found in ./base-dist/"
             exit 1

.github/workflows/nightly_build.yml

@@ -128,7 +128,6 @@ jobs:
 
           uv lock
           cd src/backend/base && uv lock && cd ../../..
-          cd src/lfx && uv lock && cd ../..
 
           git add pyproject.toml src/backend/base/pyproject.toml src/lfx/pyproject.toml uv.lock src/backend/base/uv.lock
           git commit -m "Update version and project name"

.github/workflows/release.yml

@@ -227,7 +227,8 @@ jobs:
       - name: Check if pre-release
         if: inputs.pre_release
         run: |
-          version=$(uv tree | grep 'langflow' | grep -v 'langflow-base' | awk '{print $2}' | sed 's/^v//')
+          version="${{ inputs.release_tag }}"
+          echo "$version"
           if [[ "${version}" =~ ^([0-9]+\.)?([0-9]+\.)?[0-9]+((a|b|rc|dev|post)([0-9]+))$ ]]; then
             echo "Pre-release version detected. Continuing with the release."
           else

.github/workflows/release_nightly.yml

@@ -163,7 +163,7 @@ jobs:
         run: |
           rm -rf src/backend/base/dist
           rm -rf dist
-          make build base=true args="--wheel"
+          make build base=true args="--no-sources --wheel"
 
       - name: Test Langflow Base CLI
         run: |

src/backend/base/langflow/services/deps.py

@@ -8,22 +8,27 @@
 if TYPE_CHECKING:
     from collections.abc import AsyncGenerator
 
-    from lfx.services.settings.service import SettingsService
     from sqlmodel.ext.asyncio.session import AsyncSession
 
     from langflow.services.cache.service import AsyncBaseCacheService, CacheService
     from langflow.services.chat.service import ChatService
     from langflow.services.database.service import DatabaseService
-    from langflow.services.job_queue.service import JobQueueService
     from langflow.services.session.service import SessionService
     from langflow.services.state.service import StateService
-    from langflow.services.storage.service import StorageService
     from langflow.services.store.service import StoreService
     from langflow.services.task.service import TaskService
-    from langflow.services.telemetry.service import TelemetryService
     from langflow.services.tracing.service import TracingService
     from langflow.services.variable.service import VariableService
 
+# These imports MUST be outside TYPE_CHECKING because FastAPI uses eval_str=True
+# to evaluate type annotations, and these types are used as return types for
+# dependency functions that FastAPI evaluates at module load time.
+from lfx.services.settings.service import SettingsService  # noqa: TC002
+
+from langflow.services.job_queue.service import JobQueueService  # noqa: TC001
+from langflow.services.storage.service import StorageService  # noqa: TC001
+from langflow.services.telemetry.service import TelemetryService  # noqa: TC001
+
 
 def get_service(service_type: ServiceType, default=None):
     """Retrieves the service instance for the given service type.