diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fb6e7a9..481093f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -6,3 +6,12 @@ debian:
     - pip install PyYAML
   script:
     - bash tests/run.sh break
+
+archlinux:
+  stage: test
+  image: archlinux/base
+  before_script:
+    - pacman -Sy --noconfirm && pacman -S --noconfirm python python-pip
+    - pip install PyYAML
+  script:
+    - bash tests/run.sh break
diff --git a/src/config.py b/src/config.py
index cc43712..ee0d1f8 100755
--- a/src/config.py
+++ b/src/config.py
@@ -27,6 +27,9 @@ def before_token(token, line):
         return(found.group(0)[:-len(token)])
     return("")
 def sorted_items(d):
+    """
+    Mainly used for integration testing (to keep having deterministic results).
+    """
     return(sorted(d.items()))
 def no_comment(line):
     """