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{
lib,
stdenv,
buildPythonPackage,
fetchFromGitHub,
# build-system
hatchling,
# dependencies
jsonpatch,
langsmith,
packaging,
pydantic,
pyyaml,
tenacity,
typing-extensions,
uuid-utils,
# tests
blockbuster,
freezegun,
grandalf,
httpx,
langchain-core,
langchain-tests,
numpy,
pytest-asyncio,
pytest-mock,
pytest-xdist,
pytestCheckHook,
syrupy,
# passthru
gitUpdater,
}:
buildPythonPackage rec {
pname = "langchain-core";
version = "1.2.5";
pyproject = true;
src = fetchFromGitHub {
owner = "langchain-ai";
repo = "langchain";
tag = "langchain-core==${version}";
hash = "sha256-gHIJO5O9AxtROdDuo2UhdkW6p3+4dOJaO6iKelA26gE=";
};
sourceRoot = "${src.name}/libs/core";
build-system = [ hatchling ];
dependencies = [
jsonpatch
langsmith
packaging
pydantic
pyyaml
tenacity
typing-extensions
uuid-utils
];
pythonImportsCheck = [ "langchain_core" ];
# avoid infinite recursion
doCheck = false;
nativeCheckInputs = [
blockbuster
freezegun
grandalf
langchain-tests
numpy
pytest-asyncio
pytest-mock
pytest-xdist
pytestCheckHook
syrupy
];
enabledTestPaths = [ "tests/unit_tests" ];
passthru = {
tests.pytest = langchain-core.overridePythonAttrs (_: {
doCheck = true;
});
# python updater script sets the wrong tag
skipBulkUpdate = true;
updateScript = gitUpdater {
rev-prefix = "langchain-core==";
};
};
disabledTests = [
# flaky, sometimes fail to strip uuid from AIMessageChunk before comparing to test value
"test_map_stream"
# Compares with machine-specific timings
"test_rate_limit"
# flaky: assert (1726352133.7419367 - 1726352132.2697523) < 1
"test_benchmark_model"
# TypeError: exceptions must be derived from Warning, not <class 'NoneType'>
"test_chat_prompt_template_variable_names"
"test_create_model_v2"
# Comparison with magic strings
"test_prompt_with_chat_model"
"test_prompt_with_chat_model_async"
"test_prompt_with_llm"
"test_prompt_with_llm_parser"
"test_prompt_with_llm_and_async_lambda"
"test_prompt_with_chat_model_and_parser"
"test_combining_sequences"
# AssertionError: assert [+ received] == [- snapshot]
"test_chat_input_schema"
# AssertionError: assert {'$defs': {'D...ype': 'array'} == {'$defs': {'D...ype': 'array'}
"test_schemas"
# AssertionError: assert [+ received] == [- snapshot]
"test_graph_sequence_map"
"test_representation_of_runnables"
]
++ lib.optionals stdenv.hostPlatform.isDarwin [
# Langchain-core the following tests due to the test comparing execution time with magic values.
"test_queue_for_streaming_via_sync_call"
"test_same_event_loop"
# Comparisons with magic numbers
"test_rate_limit_ainvoke"
"test_rate_limit_astream"
];
disabledTestPaths = [ "tests/unit_tests/runnables/test_runnable_events_v2.py" ];
meta = {
description = "Building applications with LLMs through composability";
homepage = "https://github.com/langchain-ai/langchain/tree/master/libs/core";
changelog = "https://github.com/langchain-ai/langchain/releases/tag/${src.tag}";
license = lib.licenses.mit;
maintainers = with lib.maintainers; [
natsukium
sarahec
];
};
}
|
