langflow/.github/workflows/cross-platform-test.md

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# Cross-Platform Install Tests
Guide for running cross-platform installation tests manually and programmatically.
## Available Tests
### 1. Test from PyPI
Tests published langflow packages from PyPI across all platforms.
**Via GitHub UI:**
1. Go to **Actions****Manual Cross-Platform Test**
2. Check **"Test from PyPI"**
3. Optionally specify a version (leave empty for latest)
4. Click **"Run workflow"**
**Via CLI:**
```bash
# Test latest version
gh workflow run cross-platform-test-manual.yml -f test-from-pypi=true
# Test specific version
gh workflow run cross-platform-test-manual.yml \
-f test-from-pypi=true \
-f langflow-version="1.0.18"
```
### 2. Test from Source
Builds and tests langflow from current branch source code.
**Via GitHub UI:**
1. Go to **Actions****Manual Cross-Platform Test**
2. Leave **"Test from PyPI"** unchecked
3. Click **"Run workflow"**
**Via CLI:**
```bash
# Test current branch
gh workflow run cross-platform-test-manual.yml -f test-from-pypi=false
```
## Platforms Tested
- **Linux**: AMD64
- **macOS**: Intel (AMD64), Apple Silicon (ARM64)
- **Windows**: AMD64
- **Python versions**:
- **Linux & macOS**: 3.10 and 3.13
- **Windows**: 3.10 and 3.12 (3.12 used instead of 3.13 for better stability)
## What Gets Tested
1. **Package Installation**: `uv pip install langflow` (PyPI) or local wheel installation
2. **Dependencies**: Additional packages like `openai` for full functionality
3. **CLI Help**: `langflow --help`
4. **Server Startup**: `langflow run --backend-only` with `/health_check` endpoint validation
5. **Python Import**: `import langflow`
## Common Options
```bash
# Extended timeout (10 minutes instead of default 5)
gh workflow run cross-platform-test-manual.yml \
-f test-timeout=10
# Test specific PyPI version
gh workflow run cross-platform-test-manual.yml \
-f test-from-pypi=true \
-f langflow-version="1.0.18"
```
## Use Cases
- **Before releases**: Verify current branch works on all platforms
- **After PyPI publish**: Confirm published packages install correctly
- **Debugging issues**: Test specific versions when users report problems
- **Development**: Quick cross-platform validation during feature work
## Technical Details
### Installation Methods
- **PyPI testing**: Uses `uv pip install` with official PyPI packages
- **Source testing**: Builds wheels from source, then installs locally
- **Dependencies**: Automatically installs additional packages (`openai`) for full functionality
### Health Checking
- **Endpoint**: Uses `/health_check` for reliable server readiness validation
- **Validation**: Checks database connectivity and chat service functionality
- **Timeout**: Configurable timeout with proper cross-platform handling
### Platform-Specific Optimizations
- **Windows**: Uses Python 3.12 for better package ecosystem stability
- **Unix**: Uses Python 3.13 for latest language features where stable
- **Virtual Environments**: Uses `uv venv --seed` for consistent pip availability
### Workflow Architecture
```
Manual Entry Point:
└── cross-platform-test-manual.yml (workflow_dispatch)
├── PyPI Mode → cross-platform-test-shared.yml
└── Source Mode → cross-platform-test.yml → cross-platform-test-shared.yml
Programmatic Entry Point:
└── cross-platform-test.yml (workflow_call only)
└── cross-platform-test-shared.yml
```
- **Manual Workflow**: User-facing interface with PyPI/source options
- **Main Workflow**: Internal workflow for programmatic calls (CI, releases)
- **Shared Workflow**: Core test execution logic (matrix jobs)
- **Single Entry Point**: Use `cross-platform-test-manual.yml` for all manual testing
### Parameter Requirements
⚠️ **Important**: When calling reusable workflows from `workflow_dispatch` triggers, **all parameters must be explicitly provided**, even optional ones with defaults. Missing optional parameters can cause workflows to be silently skipped.
**Example of correct parameter passing:**
```yaml
uses: ./.github/workflows/cross-platform-test-shared.yml
with:
install-method: "wheel"
test-timeout: 5
langflow-version: "" # ← Required even though optional
base-artifact-name: "dist"
main-artifact-name: "dist"
run-id: "" # ← Required even though optional
```
## Results
-**Success**: All platforms pass installation and basic functionality
-**Failure**: One or more platforms fail (check logs for details)
- Each platform/Python combination runs independently
- **Parallel execution**: All platforms tested simultaneously for faster feedback