How to reference a module defined in another package?

[mbcladwell]

Hi,
I am trying to package an application, my guix.scm is below.  The  
build starts OK but fails with the error:

ice-9/boot-9.scm:1669:16: In procedure raise-exception:
no code for module (artanis utils)
make: *** [Makefile:1878: limsn/app/controllers/target.go] Error 1
command "make" "-j" "4" failed with status 2

artanis/utils.scm is a file within artanis. I use-module (artanis  
utils) to no effect.  Within artanis, utils is defined as a module:

(define-module (artanis artanis)
  #:use-module (artanis utils)
  #:use-module (artanis config)
  #:use-module (artanis env).....

I tried ("artanis:utils" ,artanis "utils") but that doesn't work.
How do I specify artanis/utils.scm as an input module?
Do I need to package artanis/utils.scm separately?
Thanks
Mortimer


===guix.scm===================

(use-modules
  (guix packages)
  ((guix licenses) #:prefix license:)
  (guix download)
  (guix build-system gnu)
  (gnu packages)
  (gnu packages autotools)
  (gnu packages guile)
  (gnu packages guile-xyz)
  (gnu packages pkg-config)
  (gnu packages texinfo)
  (artanis artanis)
  (artanis utils)(artanis irregex))

(package
  (name "limsn")
  (version "0.1")
  (source "./limsn-0.1.tar.gz")
  (build-system gnu-build-system)
  (arguments `())
  (native-inputs
    `(("autoconf" ,autoconf)
      ("automake" ,automake)
      ("pkg-config" ,pkg-config)
      ("texinfo" ,texinfo)
      ("artanis" ,artanis)
      ))
  (inputs `(("guile" ,guile-3.0)
                       ))
  (propagated-inputs `())
  (synopsis "")
  (description "")
  (home-page "www.acme.com")
  (license license:gpl3+))