chore: fix package metadata and CFFI builder layout

MANIFEST.in

@@ -1 +1,7 @@
-recursive-include uringloop *
+include _ffi_build.py
+recursive-include uringloop *.py *.pyi
+include uringloop/py.typed
+exclude uringloop/_liburing.c
+exclude uringloop/_liburing.o
+exclude uringloop/_liburing*.so
+recursive-exclude uringloop/__pycache__ *

README.md

@@ -39,6 +39,8 @@ uv add uringloop
 pip install uringloop
 ```
 
+Only a source distribution is published, so the CFFI extension is compiled during installation; the liburing development headers (see Requirements) and a C compiler must be present.
+
 ## Quick Start
 
 Pass the loop factory to `asyncio.run` to use the io_uring-based event loop:

ffi.py → _ffi_build.py

@@ -317,6 +317,7 @@
     int io_uring_wait_cqe_timeout(struct io_uring *ring, struct io_uring_cqe **cqe_ptr, struct __kernel_timespec *ts);
 """)
 
-# TODO: remove this trick, i feel it is not a official way.
-if __name__ == "__cffi__" or  __name__ == "__main__":
+# for manual development builds; setuptools' cffi_modules integration only
+# needs the ffibuilder attribute and drives the compilation itself
+if __name__ == "__main__":
     ffibuilder.compile(verbose=True)

pyproject.toml

@@ -1,13 +1,24 @@
 [project]
 name = "uringloop"
 version = "0.1.0"
-description = ""
+description = "An io_uring-based proactor event loop for asyncio"
 readme = "README.md"
+license = "MIT"
 license-files = ["LICENSE"]
 requires-python = ">=3.12"
 dependencies = [
     "cffi>=1.17.1",
-    "setuptools>=78.1.0",
+]
+keywords = ["asyncio", "io_uring", "liburing", "event loop", "proactor", "linux"]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Developers",
+    "Operating System :: POSIX :: Linux",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Framework :: AsyncIO",
+    "Topic :: System :: Networking",
 ]
 
 [project.urls]
@@ -80,11 +91,9 @@ order-by-type = true
 
 # setuptools
 [build-system]
-requires = ["setuptools>=78", "cffi>=1.17.1", "wheel"]
+requires = ["setuptools>=78", "cffi>=1.17.1"]
 build-backend = "setuptools.build_meta"
-package-dir = {"" = "."}
 
 [tool.setuptools]
 packages = ["uringloop"]
 include-package-data = true
-py-modules = ["ffi"]

setup.py

@@ -1,8 +1,4 @@
 from setuptools import setup
 
 
-setup(
-    cffi_modules=["ffi.py:ffibuilder"],
-    py_modules=["ffi"],
-    include_package_data=True
-)
+setup(cffi_modules=["_ffi_build.py:ffibuilder"])