Drop deprecated setup_requires, fix encode_fs_path annotations on Python < 3.14

Move the cffi build requirement from setup_requires (deprecated
fetch_build_eggs path) to [build-system] requires in pyproject.toml.

Also quote the encode_fs_path signature annotations in full: mixing a
runtime PEP 604 union (PathStrOrBytes) with a string forward reference
raised TypeError at import time on Python < 3.14, breaking the wheel
tests on 3.11. Python 3.14's lazy annotation evaluation (PEP 649) had
masked the issue locally.

Assisted-by: Kimi Code CLI

Author: jdavid

pygit2/utils.py

@@ -76,8 +76,8 @@ def encode_fs_path(s: PathStrOrBytes) -> bytes: ...
 @overload
 def encode_fs_path(s: 'ffi.NULL_TYPE | None') -> 'ffi.NULL_TYPE': ...
 def encode_fs_path(
-    s: PathStrOrBytes | 'ffi.NULL_TYPE | None',
-) -> bytes | 'ffi.NULL_TYPE':
+    s: 'PathStrOrBytes | ffi.NULL_TYPE | None',
+) -> 'bytes | ffi.NULL_TYPE':
     if s is None or s == ffi.NULL:
         return ffi.NULL
 

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools"]
+requires = ["setuptools", "cffi>=2.0"]
 build-backend = "setuptools.build_meta"
 
 [tool.cibuildwheel]

setup.py

@@ -154,7 +154,6 @@ def run(self) -> None:
     ext_modules=ext_modules,
     # Requirements
     python_requires='>=3.11',
-    setup_requires=['cffi>=2.0'],
     install_requires=['cffi>=2.0'],
     # URLs
     url='https://github.com/libgit2/pygit2',