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{
lib,
buildPythonPackage,
fetchFromGitHub,
langgraph-checkpoint,
orjson,
psycopg,
psycopg-pool,
langgraph-sdk,
poetry-core,
pythonOlder,
postgresql,
postgresqlTestHook,
pytestCheckHook,
pytest-asyncio,
stdenvNoCC,
}:
buildPythonPackage rec {
pname = "langgraph-checkpoint-postgres";
version = "1.0.6";
pyproject = true;
disabled = pythonOlder "3.10";
src = fetchFromGitHub {
owner = "langchain-ai";
repo = "langgraph";
rev = "refs/tags/checkpointpostgres==${version}";
hash = "sha256-F9sgZQQBFs5hDUsaR5BI9ERve9L8LTUvEKOgyz5ioqY=";
};
postgresqlTestSetupPost = ''
substituteInPlace tests/conftest.py \
--replace-fail "DEFAULT_URI = \"postgres://postgres:postgres@localhost:5441/postgres?sslmode=disable\"" "DEFAULT_URI = \"postgres:///$PGDATABASE\""
'';
sourceRoot = "${src.name}/libs/checkpoint-postgres";
build-system = [ poetry-core ];
dependencies = [
langgraph-checkpoint
orjson
psycopg
psycopg-pool
];
pythonRelaxDeps = [ "psycopg-pool" ];
doCheck = !(stdenvNoCC.isDarwin);
pythonImportsCheck = [ "langgraph.checkpoint.postgres" ];
nativeCheckInputs = [
postgresql
postgresqlTestHook
pytest-asyncio
pytestCheckHook
];
passthru = {
updateScript = langgraph-sdk.updateScript;
};
meta = {
description = "Library with a Postgres implementation of LangGraph checkpoint saver";
homepage = "https://github.com/langchain-ai/langgraph/tree/main/libs/checkpoint-postgres";
changelog = "https://github.com/langchain-ai/langgraph/releases/tag/checkpointpostgres==${version}";
license = lib.licenses.mit;
maintainers = with lib.maintainers; [
drupol
sarahec
];
};
}
|
