custom_requirements.txt: Add environment marker

Specify on which environments PyYAML should be installed to prevent failing pip install.
linux-system-roles · Jan 9, 2020 · 668e5fb · 668e5fb
1 parent cbe1e1e
commit 668e5fb
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/custom_requirements.txt b/custom_requirements.txt
@@ -1,4 +1,4 @@
 # SPDX-License-Identifier: MIT
 
 # Write requirements for running your custom commands in tox here:
-PyYAML
+PyYAML; python_version == '2.7' or python_version >= '3.5'