;; What follows is a "manifest" equivalent to the command line you gave.
;; You can store it in a file that you may then pass to any 'guix' command
;; that accepts a '--manifest' (or '-m') option.

(specifications->manifest
  (list "nss-certs"
	"rust-async-stream"
    	"rust-cargo"
        "rust-rocket"
        "rust-askama"
        "rust-serde"
        "rust"))