Postpone deprecation warnings related to PEP 639 to 2027-Feb-18

setuptools/config/_apply_pyprojecttoml.py

@@ -102,7 +102,7 @@ def _apply_tool_table(dist: Distribution, config: dict, filename: StrPath):
             "'tool.setuptools.license-files' is deprecated in favor of "
             "'project.license-files' (available on setuptools>=77.0.0).",
             see_url=f"https://packaging.python.org/en/latest/{pypa_guides}",
-            due_date=(2026, 2, 18),  # Warning introduced on 2025-02-18
+            due_date=(2027, 2, 18),  # Warning introduced on 2025-02-18
         )
 
     for field, value in tool_table.items():
@@ -214,7 +214,7 @@ def _license(dist: Distribution, val: str | dict, root_dir: StrPath | None):
             "`project.license`. You can also use `project.license-files`. "
             "(Both options available on setuptools>=77.0.0).",
             see_url=f"https://packaging.python.org/en/latest/{pypa_guides}",
-            due_date=(2026, 2, 18),  # Introduced on 2025-02-18
+            due_date=(2027, 2, 18),  # Introduced on 2025-02-18
         )
         if "file" in val:
             # XXX: Is it completely safe to assume static?

setuptools/dist.py

@@ -512,7 +512,7 @@ def _find_pattern(pattern: str, enforce_match: bool = True) -> list[str]:
                 of the Python package (normally marked by `pyproject.toml`).
                 """,
                 see_url=f"https://packaging.python.org/en/latest/{pypa_guides}",
-                due_date=(2026, 3, 20),  # Introduced in 2025-03-20
+                due_date=(2027, 2, 18),  # Introduced in 2025-03-20
                 # Replace with InvalidConfigError after deprecation
             )
         if pattern.startswith((os.sep, "/")) or ":\\" in pattern:
@@ -525,7 +525,7 @@ def _find_pattern(pattern: str, enforce_match: bool = True) -> list[str]:
                 "Pattern {pattern!r} contains invalid characters.",
                 pattern=pattern,
                 see_url=f"https://packaging.python.org/en/latest/{pypa_guides}",
-                due_date=(2026, 3, 20),  # Introduced in 2025-02-20
+                due_date=(2027, 2, 18),  # Introduced in 2025-02-20
             )
 
         found = glob(pattern, recursive=True)
@@ -535,7 +535,7 @@ def _find_pattern(pattern: str, enforce_match: bool = True) -> list[str]:
                 "Cannot find any files for the given pattern.",
                 "Pattern {pattern!r} did not match any files.",
                 pattern=pattern,
-                due_date=(2026, 3, 20),  # Introduced in 2025-02-20
+                due_date=(2027, 2, 18),  # Introduced in 2025-02-20
                 # PEP 639 requires us to error, but as a transition period
                 # we will only issue a warning to give people time to prepare.
                 # After the transition, this should raise an InvalidConfigError.