aptly/server/repo/ubuntu/trusty/extra.yml

parameters:
  aptly:
    server:
      repo:
        ubuntu-trusty-extra:
          distribution: trusty
          component: main
          architectures: amd64
          comment: "Extra packages for Ubuntu Trusty"
          publisher:
            component: extra
            distributions:
              - trusty/nightly
            architectures:
              - amd64