langflow/pyproject.toml

[project]
name = "langflow"
version = "1.9.0"
description = "A Python package with a built-in web application"
requires-python = ">=3.10,<3.14"
license = "MIT"
keywords = ["nlp", "langchain", "openai", "gpt", "gui"]
readme = "README.md"
maintainers = [
    { name = "Carlos Coelho", email = "carlos@langflow.org" },
    { name = "Cristhian Zanforlin", email = "cristhian.lousa@gmail.com" },
    { name = "Gabriel Almeida", email = "gabriel@langflow.org" },
    { name = "Lucas Eduoli", email = "lucaseduoli@gmail.com" },
    { name = "Otávio Anovazzi", email = "otavio2204@gmail.com" },
    { name = "Rodrigo Nader", email = "rodrigo@langflow.org" },
    { name = "Italo dos Anjos", email = "italojohnnydosanjos@gmail.com" },
]
# Define your main dependencies here
dependencies = [
    "langflow-base[complete]~=0.9.0",
]


[dependency-groups]
dev = [
    "pytest-instafail>=0.5.0",
    "types-redis>=4.6.0.5",
    "ipykernel>=6.29.0",
    "mypy>=1.11.0",
    "ruff~=0.13.1",
    "httpx>=0.28.1",
    "pytest>=8.2.0",
    "types-requests>=2.32.0",
    "requests>=2.32.0",
    "pytest-cov>=5.0.0",
    "pandas-stubs>=2.1.4.231227",
    "types-pillow>=10.2.0.20240213",
    "types-pyyaml>=6.0.12.8",
    "types-python-jose>=3.3.4.8",
    "types-passlib>=1.7.7.13",
    "pytest-mock>=3.14.0",
    "pytest-xdist>=3.6.0",
    "types-pywin32>=306.0.0.4",
    "types-google-cloud-ndb>=2.2.0.0",
    "pytest-sugar>=1.0.0",
    "respx>=0.21.1",
    "pytest-asyncio>=0.23.0",
    "pytest-profiling>=1.7.0",
    "pre-commit>=3.7.0",
    "vulture>=2.11",
    "dictdiffer>=0.9.0",
    "pytest-split>=0.9.0",
    "pytest-flakefinder>=1.1.0",
    "types-markdown>=3.7.0.20240822",
    "packaging>=24.1,<25.0",
    "asgi-lifespan>=2.1.0",
    "pytest-github-actions-annotate-failures>=0.2.0",
    "blockbuster>=1.5.20,<1.6",
    "types-aiofiles>=24.1.0.20240626",
    "hypothesis>=6.123.17",
    "locust~=2.40.5",
    "pytest-rerunfailures>=15.0",
    "scrapegraph-py>=1.10.2",
    "pydantic-ai>=0.0.19",
    'elevenlabs==1.58.1; python_version == "3.12"',
    'elevenlabs>=1.52.0; python_version != "3.12"',
    "faker>=37.0.0",
    "pytest-timeout>=2.3.1",
    "types-cachetools>=5.5.0.20240820",
    "pyyaml>=6.0.2",
    "pyleak>=0.1.14",
    "mcp-server-fetch>=2025.1.17",
    "onnxruntime>=1.20,<=1.23" # >=1.24 does not support Python 3.10
]

[[tool.uv.index]]
name = "pytorch-cpu"
url = "https://download.pytorch.org/whl/cpu"
explicit = true

[tool.uv.sources]
langflow-base = { workspace = true }
langflow = { workspace = true }
lfx = { workspace = true }
torch = { index = "pytorch-cpu" }
torchvision = { index = "pytorch-cpu" }

[tool.uv.workspace]
members = [
    "src/backend/base",
    ".",
    "src/lfx",
]

[tool.hatch.build.targets.wheel]
packages = ["src/backend/langflow"]

[project.urls]
Repository = "https://github.com/langflow-ai/langflow"
Documentation = "https://docs.langflow.org"

[project.optional-dependencies]
docling = [
    "langchain-docling>=1.1.0",
    "tesserocr>=2.8.0",
    "rapidocr-onnxruntime>=1.4.4",
    "ocrmac>=1.0.0; sys_platform == 'darwin'",
    # CPU-only PyTorch required for docling features
    # Loose version ranges intentionally used to avoid conflicts with transitive dependencies (e.g., altk)
    "torch>=2.0.0",
    "torchvision>=0.15.0",
]

audio = [
    "webrtcvad>=2.0.10",
]


couchbase = [
    "couchbase>=4.2.1"
]
cassio = [
    "cassio>=0.1.7"
]
local = [
    "llama-cpp-python~=0.2.0",
    "sentence-transformers>=2.3.1",
    "ctransformers>=0.2.10"
]
clickhouse-connect = [
    "clickhouse-connect==0.7.19"
]

nv-ingest = [
    "nv-ingest-api>=26.1.0,<27.0.0 ; python_version >= '3.12'",
    "nv-ingest-client>=26.1.0,<27.0.0 ; python_version >= '3.12'",
]

postgresql = [
    "sqlalchemy[postgresql_psycopg2binary]>=2.0.38,<3.0.0",
    "sqlalchemy[postgresql_psycopg]>=2.0.38,<3.0.0",
]

[tool.uv]
override-dependencies = [
    # temporary force a newer python-pptx
    "python-pptx>=1.0.2",
    # z3-solver 4.15.7 dropped Linux wheels, pin until codeflash is removed
    "z3-solver<4.15.7",
]

[project.scripts]
langflow = "langflow.langflow_launcher:main"

[tool.codespell]
skip = '.git,*.pdf,*.svg,*.pdf,*.yaml,*.ipynb,poetry.lock,*.min.js,*.css,package-lock.json,*.trig.,**/node_modules/**,./stuff/*,*.csv'
# Ignore latin etc
ignore-regex = '.*(Stati Uniti|Tense=Pres).*'


[tool.pytest.ini_options]
timeout = 150
timeout_method = "signal"
minversion = "6.0"
testpaths = ["src/backend/tests", "src/lfx/tests"]
console_output_style = "progress"
filterwarnings = ["ignore::DeprecationWarning", "ignore::ResourceWarning"]
log_cli = true
log_cli_format = "%(asctime)s [%(levelname)8s] %(message)s (%(filename)s:%(lineno)s)"
log_cli_date_format = "%Y-%m-%d %H:%M:%S"
markers = [
    "async_test",
    "api_key_required",
    "no_blockbuster",
    "benchmark",
    "unit: Unit tests",
    "integration: Integration tests",
    "slow: Slow-running tests"
]
asyncio_mode = "auto"
asyncio_default_fixture_loop_scope = "function"
addopts = "-p no:benchmark"

[tool.coverage.run]
command_line = """
    -m pytest --ignore=tests/integration
    --cov --cov-report=term --cov-report=html
    --instafail -ra -n auto -m "not api_key_required"
"""
source = ["src/backend/base/langflow/"]
omit = ["*/alembic/*", "tests/*", "*/__init__.py"]


[tool.coverage.report]
sort = "Stmts"
skip_empty = true
show_missing = false
ignore_errors = true


[tool.coverage.html]
directory = "coverage"


[tool.ruff]
target-version = "py310"
exclude = ["src/backend/base/langflow/alembic/*", "src/frontend/tests/assets/*", "src/lfx/src/lfx/_assets/component_index.json"]
line-length = 120

[tool.ruff.lint]
flake8-annotations.mypy-init-return = true
flake8-bugbear.extend-immutable-calls = [
    "fastapi.Depends",
    "fastapi.File",
    "fastapi.Query",
    "typer.Option",
]
flake8-type-checking.runtime-evaluated-base-classes = [
    "pydantic.BaseModel",
    "typing.TypedDict",  # Needed by fastapi
    "typing_extensions.TypedDict",  # Needed by fastapi
]
pydocstyle.convention = "google"
select = ["ALL"]
ignore = [
    "C90", # McCabe complexity
    "CPY", # Missing copyright
    "COM812", # Messes with the formatter
    "ERA", # Eradicate commented-out code
    "FIX002", # Line contains TODO
    "ISC001", # Messes with the formatter
    "PERF203", # Rarely useful
    "PLR09", # Too many something (arg, statements, etc)
    "RUF012", # Pydantic models are currently not well detected. See https://github.com/astral-sh/ruff/issues/13630
    "TD002", # Missing author in TODO
    "TD003", # Missing issue link in TODO
    "TRY301", # A bit too harsh (Abstract `raise` to an inner function)
    "PLC0415", # Inline imports
    "D10", # Missing docstrings
    "PLW1641", # Object does not implement `__hash__` method (mutable objects shouldn't be hashable)
    # Rules that are TODOs
    "ANN"
]

# Preview rules that are not yet activated
external = ["RUF027"]

[tool.ruff.lint.per-file-ignores]
"scripts/*" = ["D1", "INP", "T201"]
"src/backend/base/langflow/alembic/versions/*" = ["INP001", "D415", "PGH003"]
"src/backend/base/langflow/custom/__init__.py" = [
    "I001",  # Import order affects initialization - must import custom module first
]
"src/backend/base/langflow/api/v1/*" = [
    "TCH",  # FastAPI needs to evaluate types at runtime
]
"src/backend/base/langflow/api/v2/*" = [
    "TCH",  # FastAPI needs to evaluate types at runtime
]
"src/backend/base/langflow/__main__.py" = [
    "B008",  # Typer CLI requires function calls in defaults
]
"src/backend/base/langflow/services/cache/*" = [
    "S301",  # Pickle usage is intentional for caching
]
"src/backend/base/langflow/services/tracing/*" = [
    "SLF001",  # Third-party library private member access (langwatch, opik)
]
"src/lfx/src/lfx/base/curl/parse.py" = [
    "S105",  # False positive: 'token' variable name, not a password
]
"src/lfx/src/lfx/services/auth/service.py" = [
    "ARG002",  # No-op impl: unused args required by interface
    "EM101",  # NotImplementedError messages as literals
    "TC003",  # Type-only imports used in signatures
]
"src/lfx/src/lfx/base/mcp/util.py" = [
    "SLF001",  # MCP library private member access
]
"src/lfx/src/lfx/cli/common.py" = [
    "S104",  # Intentional binding to all interfaces for server
    "S105",  # False positive: GITHUB_TOKEN_ENV is an env var name
]
"src/lfx/src/lfx/components/__init__.py" = [
    "SLF001",  # Accessing _dynamic_imports from modules
]
"src/lfx/src/lfx/components/data/save_file.py" = [
    "SLF001",  # Google API client private member access
]
"src/lfx/src/lfx/components/datastax/astradb_vectorstore.py" = [
    "S110",  # Try-except-pass for optional metadata
]
"src/lfx/src/lfx/components/google/google_generative_ai_embeddings.py" = [
    "SLF001",  # Google AI library private member access
]
"src/lfx/src/lfx/components/knowledge_bases/retrieval.py" = [
    "SLF001",  # Chroma client private member access
]
"src/lfx/src/lfx/components/mongodb/mongodb_atlas.py" = [
    "SLF001",  # MongoDB collection private member access
]
"src/lfx/src/lfx/components/tools/{python_code_structured_tool.py,searxng.py}" = [
    "S102",  # Use of exec/eval for dynamic code execution
    "SLF001",  # Component internal member access
]
"src/lfx/src/lfx/components/vectorstores/astradb.py" = [
    "S110",  # Try-except-pass for optional metadata
]
"src/lfx/src/lfx/custom/{code_parser/code_parser.py,validate.py}" = [
    "S102",  # Use of exec for code validation
]
"src/lfx/src/lfx/custom/custom_component/component.py" = [
    "SLF001",  # Component internal state management
]
"src/lfx/src/lfx/custom/directory_reader/directory_reader.py" = [
    "SLF001",  # Component introspection
]
"src/lfx/src/lfx/custom/utils.py" = [
    "SLF001",  # Component code analysis
]
"src/lfx/src/lfx/graph/graph/ascii.py" = [
    "SLF001",  # Grandalf library private member access
]
"src/lfx/src/lfx/inputs/input_mixin.py" = [
    "S105",  # False positive: PASSWORD is a type constant
]
"src/lfx/src/lfx/schema/table.py" = [
    "S105",  # False positive: PASSWORD is a formatter type
]
"src/lfx/src/lfx/services/mcp_composer/service.py" = [
    "S104",  # Intentional binding to all interfaces for server
    "S110",  # Try-except-pass for optional error logging
]
"src/backend/tests/*" = [
    "D1",
    "PLR2004",
    "S101",
    "SLF001",
    "BLE001",  # allow broad-exception catching in tests
]
"src/backend/base/langflow/tests/*" = [
    "D1",
    "PLR2004",
    "S101",
    "SLF001",
    "BLE001",  # allow broad-exception catching in tests
]
"src/lfx/tests/*" = [
    "D1",
    "PLR2004",
    "S101",
    "SLF001",
    "BLE001",  # allow broad-exception catching in tests
    "S104",    # Binding to all interfaces (test servers)
    "S108",    # Insecure temp file usage (safe in tests)
]
"src/backend/tests/locust/*" = [
    "D1",      # Missing docstrings (CLI tools don't need full docstrings)
    "T201",    # Print statements (needed for CLI output)
    "S603",    # Subprocess calls (needed for running commands)
    "S607",    # Starting process with partial executable path
    "S104",    # Binding to all interfaces (needed for Langflow server)
    "S105",    # Hardcoded passwords (test credentials)
    "FBT001",  # Boolean-typed positional arguments (common in CLI)
    "FBT002",  # Boolean default arguments (common in CLI tools)
    "TRY002",  # Custom exceptions (generic exceptions OK for CLI)
    "TRY003",  # Long exception messages (descriptive errors for users)
    "TRY300",  # Consider moving to else block (return patterns)
    "EM101",   # String literals in exceptions (user-facing messages)
    "EM102",   # F-string literals in exceptions (user-facing messages)
    "EXE001",  # Shebang without executable (may be run via python)
    "D415",    # First line punctuation (CLI docstrings)
    "F401",    # Unused imports (imports for availability checking)
    "PTH123",  # Use Path.open (open() is fine for simple cases)
    "PTH107",  # Use Path.unlink (os.remove is fine for simple cases)
    "PTH207",  # Use Path.glob (glob.glob is fine for simple cases)
    "B007",    # Unused loop variables (tuple unpacking)
    "PLW0602", # Global variable usage (needed for locust state)
    "PLW0603", # Global variable updates (needed for locust state)
    "DTZ005",  # Datetime without timezone (local time is fine for logs)
    "G004",    # Logging f-strings (detailed error logging)
    "SIM102",  # Nested if statements (readability over optimization)
    "E501",    # Line too long (some CLI commands are naturally long)
]

[tool.ruff.lint.flake8-builtins]
builtins-allowed-modules = [ "io", "logging", "socket"]

[tool.mypy]
plugins = ["pydantic.mypy"]
follow_imports = "skip"
disable_error_code = ["type-var"]
namespace_packages = true
mypy_path = "langflow"
ignore_missing_imports = true

[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"