Switch to use compas.IPY

Author: gonzalocasas

CHANGELOG.rst

@@ -31,6 +31,7 @@ Unreleased
 **Changed**
 
 * Updated to ``COMPAS 0.18``
+* Use ``compas.IPY`` to check for IronPython
 
 **Fixed**
 

src/compas_fab/backends/__init__.py

@@ -83,7 +83,7 @@
 from .vrep.helpers import *             # noqa: F401,F403
 from .vrep.planner import *             # noqa: F401,F403
 
-if not compas.is_ironpython():
+if not compas.IPY:
     from .pybullet.client import *            # noqa: F401,F403
     from .pybullet.exceptions import *        # noqa: F401,F403
     from .pybullet.planner import *           # noqa: F401,F403

src/compas_fab/robots/wrench.py

@@ -6,7 +6,7 @@
 from compas.geometry import Vector
 from compas.geometry import cross_vectors
 
-if not compas.is_ironpython():
+if not compas.IPY:
     from scipy import stats
 else:
     stats = None