diff --git a/pyproject.toml b/pyproject.toml
index 9d4e3e900..11a88c3b1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,7 +62,7 @@ trimesh = [
 # this is the base extra most users will want
 easy = [
     "colorlog",
-    # "mapbox-earcut", BLOCKED FOR NUMPY2
+"manifold3d>=2.3.0", # do boolean operations    
     "chardet",
     "lxml",
     "jsonschema",
@@ -91,7 +91,8 @@ recommend = [
     "python-fcl", # do collision checks
     "openctm", # load `CTM` compressed models
     "cascadio", # load `STEP` files
-    "manifold3d>=2.3.0" # do boolean operations
+    "mapbox-earcut", BLOCKED FOR NUMPY2
+    
 ]
 
 # this is the list of everything that is ever added anywhere
diff --git a/trimesh/creation.py b/trimesh/creation.py
index 599860072..2224f726c 100644
--- a/trimesh/creation.py
+++ b/trimesh/creation.py
@@ -548,7 +548,8 @@ def triangulate_polygon(
     """
 
     if engine is None:
-        engine = next(name for name, exists in _engines if exists)
+        # try getting the first engine that is installed
+        engine = next((name for name, exists in _engines if exists), None)
 
     if polygon is None or polygon.is_empty:
         return [], []