$OpenBSD: patch-setup_py,v 1.4 2018/11/27 18:03:37 landry Exp $

Index: setup.py
--- setup.py.orig
+++ setup.py
@@ -324,7 +324,7 @@ if os.path.exists("MANIFEST.in"):
         if (force_cython or not os.path.exists(c_file)
                 or os.path.getmtime(pyx_file) > os.path.getmtime(c_file)):
             log.info("Updating C extension with Cython.")
-            subprocess.check_call(["cython", "shapely/speedups/_speedups.pyx"])
+            subprocess.check_call(["cython${MODPY_BIN_SUFFIX}", "shapely/speedups/_speedups.pyx"])
     except (subprocess.CalledProcessError, OSError):
         log.warn("Could not (re)create C extension with Cython.")
         if force_cython:
