--- setup.py.orit	2022-01-15 14:34:04.000000000 -0500
+++ setup.py	2022-01-15 14:33:16.000000000 -0500
@@ -16,7 +16,7 @@
     author_email="harry.jubb@sanger.ac.uk",
     license="GNU General Public License v3.0",
     keywords="arpeggio PDB contacts bioinformatics mmCIF protein ligand interactions CREDO",
-    packages=find_namespace_packages(),
+    packages=find_namespace_packages(exclude=["build.*"]),
     classifiers=[
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",