chore: Debugging rel_url macro behaviour in CI

macros/utils.py

@@ -26,7 +26,8 @@ def variables(env: MacrosPlugin) -> dict:
     return environment(env).get("variables", {})
 
 def rel_url(env: MacrosPlugin, rel_path: str) -> str:
-    site_url = environment(env)["conf"]["site_url"]
+    _env = environment(env)
+    site_url = _env["conf"]["site_url"]
     return urljoin(site_url, rel_path)
 
 # Generic Macros: