; Add CircleCI exclusion if build from a GitHub action
(rule
 (alias doc)
 (enabled_if (<> %{env:GITHUB_ACTION=none} none))
 (action
  (progn
   (run mkdir -p _doc/_html/.circleci)
   (run cp -f ../../.circleci/config.yml "_doc/_html/.circleci/config.yml"))))