diff --git a/setup.py b/setup.py
index cdef250b7..38ef6339c 100644
--- a/setup.py
+++ b/setup.py
@@ -56,15 +56,13 @@ def get_c_extension():
         except FileNotFoundError:
             brew_prefix = None
 
-        raise Exception("AAAAAAAAAAAA Darwin build, CC=", os.environ.get("CC"))
-
         if brew_prefix and not os.environ.get('CC'):
             os.environ['CC'] = '{}/opt/llvm/bin/clang'.format(brew_prefix)
             link_args = ['-L{}/opt/llvm/lib'.format(brew_prefix), '-fopenmp']
         else:
             link_args = ['-fopenmp']
 
-        compile_args = ['-fopenmp']            
+        compile_args = ['-fopenmp']
 
     else:
         # Linux - assume gcc if CC not set
diff --git a/tox.ini b/tox.ini
index 0132e7eed..347dea6ec 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,6 +8,7 @@ skipsdist = True
 [testenv]
 changedir = tests_and_analysis/test
 test_command = python run_tests.py --report
+passenv = CC
 
 [testenv:{py38,py39,py310,py311}]
 install_command =