* **uvloop version**: 0.8.1 * **Python version**: 3.7a1 * **Platform**: Debian 9.1 * **Can you reproduce the bug with `PYTHONASYNCIODEBUG` in env?**: Not relevant Uvloop fails to install from pypi with Python 3.7 as the PyCFunctionFast signature has changed. It has been fixed in cython 0.26.1.