(use-modules (guix inferior)
             (guix channels))

(define channels
  ;; A channel with the "core-updates" branch.
  (list (channel
         (name 'guix)
         (url "https://git.savannah.gnu.org/git/guix.git")
         (branch "core-updates"))))

(define inferior
  ;; An inferior representing the above channel.
  (inferior-for-channels channels))

;; Create a manifest with ClamAV from the 'core-updates' branch, and
;; cURL + nss-certs to access HTTPS URLs.
(packages->manifest
 (append (lookup-inferior-packages inferior "clamav")
         (map specification->package
              '("curl"               ;to get the SSL_CERT_DIR variable
                "nss-certs"))))      ;to verify TLS certificates