diff --git a/python-3.7.6-0.build.sh b/python-3.7.6-0.build.sh
index 694f684..bac3d09 100755
--- a/python-3.7.6-0.build.sh
+++ b/python-3.7.6-0.build.sh
@@ -218,4 +218,7 @@ pip3 install --prefix=$PREFIX python-bioformats
 
 pip3 install --prefix=$PREFIX jupyterlab      # request Peter Arndt
 
+# try to load all packages, maybe we can see installation errors
+python3 -c 'help("modules")' > /dev/null
+
 exit