--- a/debian/rules	2020-02-11 09:38:34.021163327 +0000
--- b/debian/rules	2020-02-11 09:49:15.789619385 +0000
@@ -20,7 +20,7 @@
 # test_default_resources and test_remote needs moto to be packaged https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777089
 # test_env_modules relies on "module load" which is not packaged for Debian
 
-export PYBUILD_AFTER_TEST_python3=rm -fr {build_dir}/bin {build_dir}/tests
+export PYBUILD_AFTER_TEST_python3=rm -fr {build_dir}/bin {build_dir}/tests {dir}/tests/test_filegraph/.snakemake/
 
 export PATH:=$(shell pybuild --print build_dir --interpreter python3 --name $(PYBUILD_NAME))/bin:$(PATH)