Add means of applying config read from pyproject.toml to dist

Since the Distrubition and DistributionMetadata classes are modeled
after (an old version of) core metadata, it is necessary to add a
translation layer between them and the configuration read from
pyproject.toml

1 files changed, 16 insertions, 4 deletions

diff --git a/setuptools/config/pyprojecttoml.py b/setuptools/config/pyprojecttoml.py
index 8029847e..8ce69e21 100644
--- a/setuptools/config/pyprojecttoml.py
+++ b/setuptools/config/pyprojecttoml.py
@@ -1,15 +1,19 @@
 """Load setuptools configuration from ``pyproject.toml`` files"""
+import json
 import os
 import sys
 from contextlib import contextmanager
+from distutils import log
 from functools import partial
-from typing import Union
-import json
+from typing import TYPE_CHECKING, Union
 
-from setuptools.errors import OptionError, FileError
-from distutils import log
+from setuptools.errors import FileError, OptionError
 
 from . import expand as _expand
+from ._apply_pyprojecttoml import apply
+
+if TYPE_CHECKING:
+    from setuptools.dist import Distribution  # noqa
 
 _Path = Union[str, os.PathLike]
 
@@ -49,6 +53,14 @@ def validate(config: dict, filepath: _Path):
         raise
 
 
+def apply_configuration(dist: "Distribution", filepath: _Path) -> "Distribution":
+    """Apply the configuration from a ``pyproject.toml`` file into an existing
+    distribution object.
+    """
+    config = read_configuration(filepath)
+    return apply(dist, config, filepath)
+
+
 def read_configuration(filepath, expand=True, ignore_option_errors=False):
     """Read given configuration file and returns options from it as a dict.