From 766ddd7e210aecb85a68f67140bd15e101c4f6e4 Mon Sep 17 00:00:00 2001
From: finswimmer <finswimmer77@gmail.com>
Date: Mon, 10 Feb 2025 16:40:02 +0100
Subject: [PATCH] feat: Add support for dependency groups which include other
 groups only

---
 src/poetry/core/factory.py                    |  2 +-
 .../core/json/schemas/poetry-schema.json      | 13 ++++++--
 tests/test_factory.py                         | 33 +++++++++++++++++++
 3 files changed, 45 insertions(+), 3 deletions(-)

diff --git a/src/poetry/core/factory.py b/src/poetry/core/factory.py
index 40a72f066..381c50680 100644
--- a/src/poetry/core/factory.py
+++ b/src/poetry/core/factory.py
@@ -347,7 +347,7 @@ def _configure_package_dependencies(
                 cls._add_package_group_dependencies(
                     package=package,
                     group=group,
-                    dependencies=group_config["dependencies"],
+                    dependencies=group_config.get("dependencies", {}),
                 )
 
             for group_name, group_config in tool_poetry["group"].items():
diff --git a/src/poetry/core/json/schemas/poetry-schema.json b/src/poetry/core/json/schemas/poetry-schema.json
index 13cfed94e..55385b92f 100644
--- a/src/poetry/core/json/schemas/poetry-schema.json
+++ b/src/poetry/core/json/schemas/poetry-schema.json
@@ -171,8 +171,17 @@
         "^[a-zA-Z-_.0-9]+$": {
           "type": "object",
           "description": "This represents a single dependency group",
-          "required": [
-            "dependencies"
+          "anyOf": [
+            {
+              "required": [
+                "dependencies"
+              ]
+            },
+            {
+              "required": [
+                "include-groups"
+              ]
+            }
           ],
           "properties": {
             "optional": {
diff --git a/tests/test_factory.py b/tests/test_factory.py
index f75f61cf7..e4c756fcf 100644
--- a/tests/test_factory.py
+++ b/tests/test_factory.py
@@ -1291,3 +1291,36 @@ def test_create_poetry_with_unknown_nested_dependency_groups(
         error_type=ValueError,
         temporary_directory=temporary_directory,
     )
+
+
+def test_create_poetry_with_included_groups_only(temporary_directory: Path) -> None:
+    pyproject_toml = temporary_directory / "pyproject.toml"
+    content = """\
+[project]
+name = "my-package"
+version = "1.2.3"
+
+[tool.poetry.group.lint.dependencies]
+black = "*"
+
+[tool.poetry.group.testing.dependencies]
+pytest = "*"
+
+[tool.poetry.group.all]
+include-groups = [
+    "lint",
+    "testing",
+]
+"""
+    pyproject_toml.write_text(content)
+
+    poetry = Factory().create_poetry(temporary_directory)
+    assert len(poetry.package.all_requires) == 4
+    assert [
+        (dep.name, ",".join(dep.groups)) for dep in poetry.package.all_requires
+    ] == [
+        ("black", "lint"),
+        ("pytest", "testing"),
+        ("black", "all"),
+        ("pytest", "all"),
+    ]