feat: partially dynamic metadata proposal

pyproject_metadata/__init__.py

@@ -360,7 +360,10 @@ def from_pyproject(  # noqa: C901
         dynamic = pyproject.get_dynamic(project)
 
         for field in dynamic:
-            if field in data["project"]:
+            if (
+                field in data["project"]
+                and field not in constants.PROJECT_DYNAMIC_STATIC
+            ):
                 msg = 'Field {key} declared as dynamic in "project.dynamic" but is defined'
                 pyproject.config_error(msg, key=f"project.{field}")
 

pyproject_metadata/constants.py

@@ -16,6 +16,7 @@
     "KNOWN_PROJECT_FIELDS",
     "KNOWN_TOPLEVEL_FIELDS",
     "PRE_SPDX_METADATA_VERSIONS",
+    "PROJECT_DYNAMIC_STATIC",
     "PROJECT_TO_METADATA",
 ]
 
@@ -48,6 +49,22 @@ def __dir__() -> list[str]:
     "version": frozenset(["Version"]),
 }
 
+PROJECT_DYNAMIC_STATIC = {
+    "authors",
+    "classifiers",
+    "dependencies",
+    "keywords",
+    "license-files",
+    "maintainers",
+    "urls",
+    "entry-points",
+    "gui-scripts",
+    "optional-dependencies",
+    "scripts",
+    "license",
+}
+
+
 KNOWN_TOPLEVEL_FIELDS = {"build-system", "project", "tool", "dependency-groups"}
 KNOWN_BUILD_SYSTEM_FIELDS = {"backend-path", "build-backend", "requires"}
 KNOWN_PROJECT_FIELDS = set(PROJECT_TO_METADATA)

tests/test_standard_metadata.py

@@ -1466,6 +1466,21 @@ def test_statically_defined_dynamic_field() -> None:
         )
 
 
+def test_dual_defined_dynamic_field() -> None:
+    metadata = pyproject_metadata.StandardMetadata.from_pyproject(
+        {
+            "project": {
+                "name": "example",
+                "version": "1.2.3",
+                "dependencies": ["example"],
+                "dynamic": ["dependencies"],
+            },
+        }
+    )
+    assert len(metadata.dependencies) == 1
+    assert metadata.dynamic == ["dependencies"]
+
+
 @pytest.mark.parametrize(
     "value",
     [