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{
lib,
buildPythonPackage,
fetchFromGitHub,
pythonOlder,
# build-system
hatchling,
# dependencies
aiohttp,
async-timeout,
langchain-core,
langchain-text-splitters,
langgraph,
langsmith,
numpy,
pydantic,
pyyaml,
requests,
sqlalchemy,
tenacity,
# runtime
runtimeShell,
# tests
blockbuster,
freezegun,
httpx,
langchain-tests,
lark,
pandas,
pytest-asyncio,
pytest-mock,
pytest-socket,
pytestCheckHook,
requests-mock,
responses,
syrupy,
toml,
# passthru
gitUpdater,
}:
buildPythonPackage rec {
pname = "langchain";
version = "1.2.0";
pyproject = true;
src = fetchFromGitHub {
owner = "langchain-ai";
repo = "langchain";
tag = "langchain==${version}";
hash = "sha256-DximXCwrDSUVXZenUrubuGcxdnRCPCPMgdW9UJnkGnE=";
};
sourceRoot = "${src.name}/libs/langchain_v1";
postPatch = ''
substituteInPlace langchain/agents/middleware/shell_tool.py \
--replace-fail '"/bin/bash"' '"${runtimeShell}"'
'';
build-system = [ hatchling ];
pythonRelaxDeps = [
# Each component release requests the exact latest core.
# That prevents us from updating individual components.
"langchain-core"
"numpy"
"tenacity"
];
dependencies = [
aiohttp
langchain-core
langchain-text-splitters
langgraph
langsmith
numpy
pydantic
pyyaml
requests
sqlalchemy
tenacity
]
++ lib.optional (pythonOlder "3.11") async-timeout;
optional-dependencies = {
numpy = [ numpy ];
};
nativeCheckInputs = [
blockbuster
freezegun
httpx
lark
langchain-tests
pandas
pytest-asyncio
pytest-mock
pytest-socket
pytestCheckHook
requests-mock
responses
syrupy
toml
];
pytestFlags = [
"--only-core"
];
enabledTestPaths = [
# integration_tests require network access, database access and require `OPENAI_API_KEY`, etc.
"tests/unit_tests"
];
# All pass with sandbox=false
disabledTests = [
# Depends on shell's truncation style
"test_truncation_indicator_present"
# Depends on the sleep shell command
"test_timeout_returns_error"
# Can't see the shell session results when sandboxed
"test_startup_and_shutdown_commands"
# Timing sensitive tests
"test_tool_retry_constant_backoff"
];
disabledTestPaths = [
# Their configuration tests don't place nicely with nixpkgs
"tests/unit_tests/test_pytest_config.py"
];
pythonImportsCheck = [ "langchain" ];
passthru = {
skipBulkUpdate = true;
updateScript = gitUpdater {
rev-prefix = "langchain==";
};
};
__darwinAllowLocalNetworking = true;
meta = {
description = "Building applications with LLMs through composability";
homepage = "https://github.com/langchain-ai/langchain";
changelog = "https://github.com/langchain-ai/langchain/releases/tag/${src.tag}";
license = lib.licenses.mit;
maintainers = with lib.maintainers; [
natsukium
sarahec
];
};
}
|
