python3Packages.langchain-anthropic: init at 0.3.12 (#403125)

pkgs/development/python-modules/langchain-anthropic/default.nix

@@ -0,0 +1,75 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  nix-update-script,
+
+  # build-system
+  pdm-backend,
+
+  # dependencies
+  anthropic,
+  langchain-core,
+  pydantic,
+
+  # tests
+  langchain-tests,
+  pytest-asyncio,
+  pytestCheckHook,
+}:
+
+buildPythonPackage rec {
+  pname = "langchain-anthropic";
+  version = "0.3.12";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "langchain-ai";
+    repo = "langchain";
+    tag = "langchain-anthropic==${version}";
+    hash = "sha256-UpyACv1cVzvK4A1Up3R6PqVQahy9hAu0LoSkaEen6Sw=";
+  };
+
+  sourceRoot = "${src.name}/libs/partners/anthropic";
+
+  build-system = [ pdm-backend ];
+
+  dependencies = [
+    anthropic
+    langchain-core
+    pydantic
+  ];
+
+  pythonRelaxDeps = [
+    # Each component release requests the exact latest core.
+    # That prevents us from updating individual components.
+    "langchain-core"
+  ];
+
+  nativeCheckInputs = [
+    langchain-tests
+    pytest-asyncio
+    pytestCheckHook
+  ];
+
+  pytestFlagsArray = [ "tests/unit_tests" ];
+
+  pythonImportsCheck = [ "langchain_anthropic" ];
+
+  passthru.updateScript = nix-update-script {
+    extraArgs = [
+      "--version-regex"
+      "langchain-anthropic==([0-9.]+)"
+    ];
+  };
+
+  meta = {
+    changelog = "https://github.com/langchain-ai/langchain-anthropic/releases/tag/langchain-anthropic==${version}";
+    description = "Build LangChain applications with Anthropic";
+    homepage = "https://github.com/langchain-ai/langchain/tree/master/libs/partners/anthropic";
+    license = lib.licenses.mit;
+    maintainers = [
+      lib.maintainers.sarahec
+    ];
+  };
+}

pkgs/development/python-modules/langchain-core/update.sh

@@ -5,6 +5,7 @@ set -euo pipefail
 
 declare -ar packages=(
     langchain
+    langchain-anthropic
     langchain-azure-dynamic-sessions
     langchain-chroma
     langchain-community

pkgs/top-level/python-packages.nix

@@ -7524,6 +7524,8 @@ self: super: with self; {
 
   langchain = callPackage ../development/python-modules/langchain { };
 
+  langchain-anthropic = callPackage ../development/python-modules/langchain-anthropic { };
+
   langchain-aws = callPackage ../development/python-modules/langchain-aws { };
 
   langchain-azure-dynamic-sessions =