Read description field from setup files

src/poetry/utils/setup_reader.py

@@ -22,6 +22,7 @@ class SetupReader:
     DEFAULT: ClassVar[dict[str, Any]] = {
         "name": None,
         "version": None,
+        "description": None,
         "install_requires": [],
         "extras_require": {},
         "python_requires": None,
@@ -62,6 +63,7 @@ def read_setup_py(self, filepath: Path) -> dict[str, Any]:
         call, body = setup_call
         result["name"] = self._find_single_string(call, body, "name")
         result["version"] = self._find_single_string(call, body, "version")
+        result["description"] = self._find_single_string(call, body, "description")
         result["install_requires"] = self._find_install_requires(call, body)
         result["extras_require"] = self._find_extras_require(call, body)
         result["python_requires"] = self._find_single_string(
@@ -77,12 +79,16 @@ def read_setup_cfg(self, filepath: Path) -> dict[str, Any]:
 
         name = None
         version = None
+        description = None
         if parser.has_option("metadata", "name"):
             name = parser.get("metadata", "name")
 
         if parser.has_option("metadata", "version"):
             version = Version.parse(parser.get("metadata", "version")).text
 
+        if parser.has_option("metadata", "description"):
+            description = parser.get("metadata", "description")
+
         install_requires = []
         extras_require: dict[str, list[str]] = {}
         python_requires = None
@@ -112,6 +118,7 @@ def read_setup_cfg(self, filepath: Path) -> dict[str, Any]:
         return {
             "name": name,
             "version": version,
+            "description": description,
             "install_requires": install_requires,
             "extras_require": extras_require,
             "python_requires": python_requires,

tests/utils/fixtures/setups/minimal/setup.py

@@ -0,0 +1,6 @@
+from __future__ import annotations
+
+from setuptools import setup
+
+
+setup()

tests/utils/fixtures/setups/with-setup-cfg-minimal/setup.py

@@ -0,0 +1,6 @@
+from __future__ import annotations
+
+from setuptools import setup
+
+
+setup()

tests/utils/fixtures/setups/with-setup-cfg/setup.cfg

@@ -1,6 +1,7 @@
 [metadata]
 name = with-setup-cfg
 version = 1.2.3
+description = Package with setup.cfg
 
 [options]
 zip_safe = true

tests/utils/test_setup_reader.py

@@ -22,13 +22,32 @@ def _setup(name: str) -> Path:
     return _setup
 
 
+def test_setup_reader_read_minimal_setup_py(setup: Callable[[str], Path]) -> None:
+    result = SetupReader.read_from_directory(setup("minimal"))
+
+    expected_name = None
+    expected_version = None
+    expected_description = None
+    expected_install_requires: list[str] = []
+    expected_extras_require: dict[str, list[str]] = {}
+    expected_python_requires = None
+
+    assert result["name"] == expected_name
+    assert result["version"] == expected_version
+    assert result["description"] == expected_description
+    assert result["install_requires"] == expected_install_requires
+    assert result["extras_require"] == expected_extras_require
+    assert result["python_requires"] == expected_python_requires
+
+
 def test_setup_reader_read_first_level_setup_call_with_direct_types(
     setup: Callable[[str], Path]
 ) -> None:
     result = SetupReader.read_from_directory(setup("flask"))
 
     expected_name = "Flask"
     expected_version = None
+    expected_description = "A simple framework for building complex web applications."
     expected_install_requires = [
         "Werkzeug>=0.14",
         "Jinja2>=2.10",
@@ -51,6 +70,7 @@ def test_setup_reader_read_first_level_setup_call_with_direct_types(
 
     assert result["name"] == expected_name
     assert result["version"] == expected_version
+    assert result["description"] == expected_description
     assert result["install_requires"] == expected_install_requires
     assert result["extras_require"] == expected_extras_require
     assert result["python_requires"] == expected_python_requires
@@ -63,6 +83,7 @@ def test_setup_reader_read_first_level_setup_call_with_variables(
 
     expected_name = None
     expected_version = None
+    expected_description = None
     expected_install_requires = [
         "chardet>=3.0.2,<3.1.0",
         "idna>=2.5,<2.8",
@@ -78,6 +99,7 @@ def test_setup_reader_read_first_level_setup_call_with_variables(
 
     assert result["name"] == expected_name
     assert result["version"] == expected_version
+    assert result["description"] == expected_description
     assert result["install_requires"] == expected_install_requires
     assert result["extras_require"] == expected_extras_require
     assert result["python_requires"] == expected_python_requires
@@ -90,6 +112,7 @@ def test_setup_reader_read_sub_level_setup_call_with_direct_types(
 
     expected_name = "SQLAlchemy"
     expected_version = None
+    expected_description = "Database Abstraction Library"
     expected_install_requires: list[str] = []
     expected_extras_require = {
         "mysql": ["mysqlclient"],
@@ -104,6 +127,7 @@ def test_setup_reader_read_sub_level_setup_call_with_direct_types(
 
     assert result["name"] == expected_name
     assert result["version"] == expected_version
+    assert result["description"] == expected_description
     assert result["install_requires"] == expected_install_requires
     assert result["extras_require"] == expected_extras_require
     assert result["python_requires"] is None
@@ -114,6 +138,7 @@ def test_setup_reader_read_setup_cfg(setup: Callable[[str], Path]) -> None:
 
     expected_name = "with-setup-cfg"
     expected_version = "1.2.3"
+    expected_description = "Package with setup.cfg"
     expected_install_requires = ["six", "tomlkit"]
     expected_extras_require = {
         "validation": ["cerberus"],
@@ -123,6 +148,25 @@ def test_setup_reader_read_setup_cfg(setup: Callable[[str], Path]) -> None:
 
     assert result["name"] == expected_name
     assert result["version"] == expected_version
+    assert result["description"] == expected_description
+    assert result["install_requires"] == expected_install_requires
+    assert result["extras_require"] == expected_extras_require
+    assert result["python_requires"] == expected_python_requires
+
+
+def test_setup_reader_read_minimal_setup_cfg(setup: Callable[[str], Path]) -> None:
+    result = SetupReader.read_from_directory(setup("with-setup-cfg-minimal"))
+
+    expected_name = None
+    expected_version = None
+    expected_description = None
+    expected_install_requires: list[str] = []
+    expected_extras_require: dict[str, list[str]] = {}
+    expected_python_requires = None
+
+    assert result["name"] == expected_name
+    assert result["version"] == expected_version
+    assert result["description"] == expected_description
     assert result["install_requires"] == expected_install_requires
     assert result["extras_require"] == expected_extras_require
     assert result["python_requires"] == expected_python_requires
@@ -138,12 +182,14 @@ def test_setup_reader_read_setup_kwargs(setup: Callable[[str], Path]) -> None:
 
     expected_name = "pendulum"
     expected_version = "2.0.4"
+    expected_description = "Python datetimes made easy"
     expected_install_requires = ["python-dateutil>=2.6,<3.0", "pytzdata>=2018.3"]
     expected_extras_require = {':python_version < "3.5"': ["typing>=3.6,<4.0"]}
     expected_python_requires = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
     assert result["name"] == expected_name
     assert result["version"] == expected_version
+    assert result["description"] == expected_description
     assert result["install_requires"] == expected_install_requires
     assert result["extras_require"] == expected_extras_require
     assert result["python_requires"] == expected_python_requires
@@ -154,12 +200,14 @@ def test_setup_reader_read_setup_call_in_main(setup: Callable[[str], Path]) -> N
 
     expected_name = "PyYAML"
     expected_version = "3.13"
+    expected_description = "YAML parser and emitter for Python"
     expected_install_requires: list[str] = []
     expected_extras_require: dict[str, list[str]] = {}
     expected_python_requires = None
 
     assert result["name"] == expected_name
     assert result["version"] == expected_version
+    assert result["description"] == expected_description
     assert result["install_requires"] == expected_install_requires
     assert result["extras_require"] == expected_extras_require
     assert result["python_requires"] == expected_python_requires
@@ -172,12 +220,14 @@ def test_setup_reader_read_extras_require_with_variables(
 
     expected_name = "extras_require_with_vars"
     expected_version = "0.0.1"
+    expected_description = "test setup_reader.py"
     expected_install_requires: list[str] = []
     expected_extras_require = {"test": ["pytest"]}
     expected_python_requires = None
 
     assert result["name"] == expected_name
     assert result["version"] == expected_version
+    assert result["description"] == expected_description
     assert result["install_requires"] == expected_install_requires
     assert result["extras_require"] == expected_extras_require
     assert result["python_requires"] == expected_python_requires
@@ -188,6 +238,8 @@ def test_setup_reader_setuptools(setup: Callable[[str], Path]) -> None:
 
     expected_name = "my_package"
     expected_version = "0.1.2"
+    expected_description = "Just a description"
 
     assert result["name"] == expected_name
     assert result["version"] == expected_version
+    assert result["description"] == expected_description