diff --git a/artifacts/nickel/test.ncl b/artifacts/nickel/test.ncl
index fd61cf5..b146da2 100644
--- a/artifacts/nickel/test.ncl
+++ b/artifacts/nickel/test.ncl
@@ -9,5 +9,8 @@
   package_managers = [ "dpkg", "pip" ],
   misc_packages = [
     { name = "mpkg1", url = "http://127.0.0.1/package1.zip" }
+  ],
+  python_venvs = [
+    { path = "/prog" }
   ]
 }
diff --git a/workflow.sh b/workflow.sh
deleted file mode 100755
index ea7bcc2..0000000
--- a/workflow.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/bash
-
-DATE=$(date +%Y%m%d)
-
-rm -f blacklists/$DATE.csv
-rm -rf outputs
-snakemake --cores 4
\ No newline at end of file