From 308baa8f8df573dcccc8f74ac49091798ea16b7e Mon Sep 17 00:00:00 2001
From: Lars Bilke <lars.bilke@ufz.de>
Date: Wed, 31 May 2023 19:19:23 +0000
Subject: [PATCH] Update cli.py

---
 ogscm/cli.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ogscm/cli.py b/ogscm/cli.py
index 63c3cec..268cd70 100644
--- a/ogscm/cli.py
+++ b/ogscm/cli.py
@@ -217,7 +217,7 @@ def main():  # pragma: no cover
     out_dir = f"{args.out}/{args.format}"
     toolchain = None
     versions = None  # versions.json
-    pip_requirements = None
+    pip_requirements = []
 
     for recipe in recipe_args_parser.parse_known_args()[0].recipe:
         import importlib.resources as pkg_resources
-- 
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