Update pyproject.toml

Author: makslevental

pyproject.toml

@@ -1,7 +1,7 @@
 [build-system]
 # https://stackoverflow.com/a/69711730
 #requires = ["setuptools>=64.0.0", "wheel", "pip"]
-requires = ["setuptools>=42", "wheel", "pip"]
+requires = ["setuptools>=42", "wheel", "pip", "eudsl-llvmpy ; python_version > '3.9'"]
 build-backend = "setuptools.build_meta"
 
 [tool.pytest.ini_options]