(specifications->manifest
  '("glibc-locales"
    "guile-gcrypt"
    "guile"
    "guile-readline"
    "guile-lib"
    "nyacc"
    "shepherd"
    ;; Email managing
    "isync"
    "notmuch"
    "bogofilter"
    "vdirsyncer"
    "khard"))