- Fix handling of tool section during pyproject.toml generation

Author: dataflake

CHANGES.rst

@@ -4,6 +4,8 @@ Change log
 2.0 (unreleased)
 ----------------
 
+- Fix handling of ``tool`` section during ``pyproject.toml`` generation.
+
 - Add support for Python 3.14.
 
 - Drop support for Python 3.9.

src/zope/meta/config_package.py

@@ -646,6 +646,7 @@ def pyproject_toml(self):
 
         # Capture some pre-transformation data
         old_requires = toml_doc.get('build-system', {}).get('requires', [])
+        old_tools = toml_doc.get('tool', {})
 
         # Apply template-dependent defaults
         toml_defaults = self.render_with_meta(
@@ -669,6 +670,12 @@ def pyproject_toml(self):
             [old_requires.remove(x) for x in wheel_requirement]
             toml_doc['build-system']['requires'].extend(old_requires)
 
+        # Fix up tool sections because the call to ``update`` above will
+        # replace the entire ``tool`` mapping...
+        for k, v in old_tools.items():
+            if k != 'coverage':  # `coverage` settings are handled by template
+                toml_doc['tool'][k] = v
+
         # Update coverage-related data
         coverage = toml_doc['tool']['coverage']
         add_cfg = self.meta_cfg['coverage-run'].get('additional-config', [])