Switch from check-manifest to check-sdist (#8846)

The latter will work with non-setuptools build backends.

2 files changed, 8 insertions, 7 deletions

diff --git a/src/_cffi_src/build_openssl.py b/src/_cffi_src/build_openssl.py
index e199329db..019789441 100644
--- a/src/_cffi_src/build_openssl.py
+++ b/src/_cffi_src/build_openssl.py
@@ -54,7 +54,7 @@ ffi = build_ffi_for_binding(
 )
 
 if __name__ == "__main__":
-    out_dir = os.getenv("OUT_DIR")
+    out_dir = os.environ["OUT_DIR"]
     module_name, source, source_extension, kwds = ffi._assigned_source
     c_file = os.path.join(out_dir, module_name + source_extension)
     if platform.python_implementation() == "PyPy":
diff --git a/src/_cffi_src/utils.py b/src/_cffi_src/utils.py
index 9eb782686..b5fba3709 100644
--- a/src/_cffi_src/utils.py
+++ b/src/_cffi_src/utils.py
@@ -7,6 +7,7 @@ from __future__ import annotations
 import os
 import platform
 import sys
+import typing
 
 from cffi import FFI
 
@@ -18,9 +19,9 @@ with open(os.path.join(base_src, "cryptography", "__about__.py")) as f:
 
 
 def build_ffi_for_binding(
-    module_name,
-    module_prefix,
-    modules,
+    module_name: str,
+    module_prefix: str,
+    modules: typing.List[str],
 ):
     """
     Modules listed in ``modules`` should have the following attributes:
@@ -54,9 +55,9 @@ def build_ffi_for_binding(
 
 
 def build_ffi(
-    module_name,
-    cdef_source,
-    verify_source,
+    module_name: str,
+    cdef_source: str,
+    verify_source: str,
 ):
     ffi = FFI()
     # Always add the CRYPTOGRAPHY_PACKAGE_VERSION to the shared object