fix: take project.dynamic into account to decide if poetry dependen…

…cies are used to define or only to enrich project dependencies

This is especially relevant for projects that do not have any mandatory dependencies but optional dependencies and use `tool.poetry.dependencies` to define sources for these optional dependencies. Without this change the dependencies in `tool.poetry.dependencies` would have been considered mandatory dependencies in this case.

src/poetry/core/factory.py

@@ -284,10 +284,16 @@ def _configure_package_dependencies(
 
         dependencies = project.get("dependencies", {})
         optional_dependencies = project.get("optional-dependencies", {})
+        dynamic = project.get("dynamic", [])
 
         package_extras: dict[NormalizedName, list[Dependency]]
         if dependencies or optional_dependencies:
-            group = DependencyGroup(MAIN_GROUP)
+            group = DependencyGroup(
+                MAIN_GROUP,
+                mixed_dynamic=(
+                    "dependencies" in dynamic or "optional-dependencies" in dynamic
+                ),
+            )
             package.add_dependency_group(group)
 
             for constraint in dependencies:

src/poetry/core/packages/dependency_group.py

@@ -14,9 +14,12 @@
 
 
 class DependencyGroup:
-    def __init__(self, name: str, optional: bool = False) -> None:
+    def __init__(
+        self, name: str, *, optional: bool = False, mixed_dynamic: bool = False
+    ) -> None:
         self._name: str = name
         self._optional: bool = optional
+        self._mixed_dynamic = mixed_dynamic
         self._dependencies: list[Dependency] = []
         self._poetry_dependencies: list[Dependency] = []
 
@@ -27,8 +30,9 @@ def name(self) -> str:
     @property
     def dependencies(self) -> list[Dependency]:
         if not self._dependencies:
+            # legacy mode
             return self._poetry_dependencies
-        if self._poetry_dependencies:
+        if self._mixed_dynamic and self._poetry_dependencies:
             if all(dep.is_optional() for dep in self._dependencies):
                 return [
                     *self._dependencies,

tests/packages/test_dependency_group.py

@@ -43,6 +43,7 @@ def create_dependency(
     return dep
 
 
+@pytest.mark.parametrize("mixed_dynamic", [False, True])
 @pytest.mark.parametrize(
     (
         "dependencies",
@@ -57,20 +58,20 @@ def create_dependency(
         (
             {Dependency("foo", "*", optional=True)},
             {Dependency("bar", "*")},
-            {"foo", "bar"},
+            ({"foo"}, {"foo", "bar"}),
         ),
         (
             {Dependency("foo", "*")},
             {Dependency("bar", "*", optional=True)},
-            {"foo", "bar"},
+            ({"foo"}, {"foo", "bar"}),
         ),
         (
             {
                 Dependency("foo", "*", optional=True),
                 Dependency("baz", "*", optional=True),
             },
             {Dependency("bar", "*")},
-            {"foo", "bar", "baz"},
+            ({"foo", "baz"}, {"foo", "bar", "baz"}),
         ),
         (
             {
@@ -83,20 +84,25 @@ def create_dependency(
         (
             {Dependency("foo", "*", optional=True)},
             {Dependency("bar", "*"), Dependency("baz", "*", optional=True)},
-            {"foo", "bar"},
+            ({"foo"}, {"foo", "bar"}),
         ),
     ],
 )
 def test_dependencies(
     dependencies: set[Dependency],
     poetry_dependencies: set[Dependency],
-    expected_dependencies: set[str],
+    mixed_dynamic: bool,
+    expected_dependencies: set[str] | tuple[set[str], set[str]],
 ) -> None:
-    group = DependencyGroup(name="group")
+    group = DependencyGroup(name="group", mixed_dynamic=mixed_dynamic)
     group._dependencies = list(dependencies)
     group._poetry_dependencies = list(poetry_dependencies)
 
-    assert {d.name for d in group.dependencies} == set(expected_dependencies)
+    if isinstance(expected_dependencies, tuple):
+        expected_dependencies = (
+            expected_dependencies[1] if mixed_dynamic else expected_dependencies[0]
+        )
+    assert {d.name for d in group.dependencies} == expected_dependencies
 
 
 @pytest.mark.parametrize(
@@ -147,6 +153,7 @@ def test_remove_dependency_removes_from_both_lists() -> None:
     assert {d.name for d in group._poetry_dependencies} == {"baz"}
 
 
+@pytest.mark.parametrize("mixed_dynamic", [False, True])
 @pytest.mark.parametrize(
     (
         "dependencies",
@@ -164,12 +171,24 @@ def test_remove_dependency_removes_from_both_lists() -> None:
         (
             [create_dependency("foo", in_extras=("extra1",))],
             [create_dependency("bar")],
-            [create_dependency("foo", in_extras=("extra1",)), create_dependency("bar")],
+            (
+                [create_dependency("foo", in_extras=("extra1",))],
+                [
+                    create_dependency("foo", in_extras=("extra1",)),
+                    create_dependency("bar"),
+                ],
+            ),
         ),
         (
             [create_dependency("foo")],
             [create_dependency("bar", in_extras=("extra1",))],
-            [create_dependency("foo"), create_dependency("bar", in_extras=("extra1",))],
+            (
+                [create_dependency("foo")],
+                [
+                    create_dependency("foo"),
+                    create_dependency("bar", in_extras=("extra1",)),
+                ],
+            ),
         ),
         # refine constraint
         (
@@ -311,6 +330,23 @@ def test_remove_dependency_removes_from_both_lists() -> None:
             [create_dependency("foo", source_name="src", optional=True)],
             [create_dependency("foo", source_name="src", marker="extra == 'extra1'")],
         ),
+        (
+            [Dependency.create_from_pep_508("foo;extra=='extra1'")],
+            [create_dependency("foo", source_name="src")],
+            (
+                [
+                    create_dependency(
+                        "foo", source_name="src", marker="extra == 'extra1'"
+                    )
+                ],
+                [
+                    create_dependency(
+                        "foo", source_name="src", marker="extra == 'extra1'"
+                    ),
+                    create_dependency("foo", source_name="src"),
+                ],
+            ),
+        ),
         # extras - special
         # root extras do not have an extra marker, they just have set _in_extras!
         (
@@ -398,12 +434,18 @@ def test_remove_dependency_removes_from_both_lists() -> None:
 def test_dependencies_for_locking(
     dependencies: list[Dependency],
     poetry_dependencies: list[Dependency],
-    expected_dependencies: list[Dependency],
+    mixed_dynamic: bool,
+    expected_dependencies: list[Dependency] | tuple[list[Dependency], list[Dependency]],
 ) -> None:
-    group = DependencyGroup(name="group")
+    group = DependencyGroup(name="group", mixed_dynamic=mixed_dynamic)
     group._dependencies = dependencies
     group._poetry_dependencies = poetry_dependencies
 
+    if isinstance(expected_dependencies, tuple):
+        expected_dependencies = (
+            expected_dependencies[1] if mixed_dynamic else expected_dependencies[0]
+        )
+
     assert group.dependencies_for_locking == expected_dependencies
     # explicitly check attributes that are not considered in __eq__
     assert [d.allows_prereleases() for d in group.dependencies_for_locking] == [