pytest config now in pyproject.toml

Author: graingert

ci.sh

@@ -143,7 +143,7 @@ else
     cd empty
 
     INSTALLDIR=$(python -c "import os, trio; print(os.path.dirname(trio.__file__))")
-    cp ../setup.cfg $INSTALLDIR
+    cp ../pyproject.toml $INSTALLDIR
     # We have to copy .coveragerc into this directory, rather than passing
     # --cov-config=../.coveragerc to pytest, because codecov.sh will run
     # 'coverage xml' to generate the report that it uses, and that will only