factory: cleanup creation from package

This change ensures that generated toml file from packages contain all
relevant metadata and handles groups correct.

src/poetry/console/commands/plugin/add.py

@@ -122,7 +122,7 @@ def handle(self) -> int:
         # we have about the current environment.
         if not env_dir.joinpath("pyproject.toml").exists():
             Factory.create_pyproject_from_package(
-                root_package,  # type: ignore[arg-type]
+                root_package,
                 env_dir,
             )
 

src/poetry/factory.py

@@ -19,6 +19,8 @@
 
 if TYPE_CHECKING:
     from cleo.io.io import IO
+    from poetry.core.packages.package import Package
+    from tomlkit.toml_document import TOMLDocument
 
     from poetry.repositories.legacy_repository import LegacyRepository
 
@@ -178,23 +180,28 @@ def create_legacy_repository(
         )
 
     @classmethod
-    def create_pyproject_from_package(cls, package: ProjectPackage, path: Path) -> None:
+    def create_pyproject_from_package(
+        cls, package: Package, path: Path | None = None
+    ) -> TOMLDocument:
         import tomlkit
 
-        from poetry.layouts.layout import POETRY_DEFAULT
-
-        pyproject = tomlkit.loads(POETRY_DEFAULT)
-        content = pyproject["tool"]["poetry"]
+        pyproject = tomlkit.document()
+        pyproject["tool"] = tomlkit.table()
+        pyproject["tool"]._is_super_table = True
+        content = pyproject["tool"]["poetry"] = tomlkit.table()
 
         content["name"] = package.name
         content["version"] = package.version.text
         content["description"] = package.description
         content["authors"] = package.authors
+        content["license"] = package.license.id if package.license else ""
+        content["classifiers"] = package.classifiers
+        content["readme"] = [*package.readmes]
 
-        dependency_section = content["dependencies"]
+        dependency_section = content["dependencies"] = tomlkit.table()
         dependency_section["python"] = package.python_versions
 
-        for dep in package.requires:
+        for dep in package.all_requires:
             constraint = tomlkit.inline_table()
             if dep.is_vcs():
                 constraint[dep.vcs] = dep.source_url
@@ -215,8 +222,28 @@ def create_pyproject_from_package(cls, package: ProjectPackage, path: Path) -> N
             if len(constraint) == 1 and "version" in constraint:
                 constraint = constraint["version"]
 
-            dependency_section[dep.name] = constraint
+            for group in dep.groups:
+                if group == "default":
+                    dependency_section[dep.name] = constraint
+                else:
+                    if "group" not in content:
+                        content["group"] = tomlkit.table()
+                        content["group"]._is_super_table = True
 
-        path.joinpath("pyproject.toml").write_text(
-            pyproject.as_string(), encoding="utf-8"
-        )
+                    if group not in content["group"]:
+                        content["group"][group] = tomlkit.table()
+                        content["group"][group]._is_super_table = True
+
+                    if "dependencies" not in content["group"][group]:
+                        content["group"][group]["dependencies"] = tomlkit.table()
+
+                    content["group"][group]["dependencies"][dep.name] = constraint
+
+        pyproject.add(tomlkit.nl())
+
+        if path:
+            path.joinpath("pyproject.toml").write_text(
+                pyproject.as_string(), encoding="utf-8"
+            )
+
+        return pyproject