- Use the legacy table form of the license field, since devel/py-setuptools
  (63.1.0) predates setuptools 77.0.0 where SPDX license expressions (PEP 639)
  were introduced.

--- pyproject.toml.orig	2026-09-05 14:34:20 UTC
+++ pyproject.toml
@@ -3,7 +3,7 @@ readme = "README.md"
 version = "2.6.0"
 description = "Bootstrap 4 & 5 helper for your Flask projects."
 readme = "README.md"
-license = "MIT"
+license = { text = "MIT" }
 authors = [{ name = "Grey Li", email = "withlihui@gmail.com" }]
 classifiers = [
     'Development Status :: 5 - Production/Stable',