From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Lepiller <julien@lepiller.eu>
Subject: Re: "no code for module"
Date: Sun, 29 Dec 2019 00:03:19 +0100
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To: help-guix@gnu.org, Nathan Dehnel <ncdehnel@gmail.com>

Le 28 d=C3=A9cembre 2019 23:28:50 GMT+01:00, Nathan Dehnel <ncdehnel@gmail=
=2Ecom> a =C3=A9crit :
>I made a package which is basically a clone of the "hello" package
>example=2E
>
>(use-modules (guix packages)
>             (guix download)
>             (guix build-system gnu)
>             (guix licenses))
>(define-public deadbeef
> (package
>   (name "deadbeef")
>   (version "1=2E8=2E2")
>   (source (origin
>             (method url-fetch)
>             (uri (string-append
>"https://github=2Ecom/DeaDBeeF-Player/deadbeef/archive/" version
>                                 "=2Etar=2Egz"))
>             (sha256
>              (base32
>             "1wsx62gi1bfd9rx5br2gprq4q3sfp7iqj1inxhhiqjasbm85vg50"))))
>   (build-system gnu-build-system)
>   (synopsis "A music player for *nix-like systems and OS X")
>   (description
>    "GNU Hello prints the message \"Hello, world!\" and then exits=2E  It
>serves as an example of standard GNU coding practices=2E  As such, it
>supports
>command-line arguments, multiple languages, and so on=2E")
>   (home-page "https://deadbeef=2Esourceforge=2Eio/")
>   (license gpl2)))
>
>I added it to a channel, and added the channel, then ran guix pull=2E I
>got this error:
>
>(repl-version 0 0)
>(exception misc-error (value #f) (value "~A ~S") (value ("no code for
>module" (deadbeef))) (value #f))
>
>Any idea what the problem is?

I think you need to make it an actual guile module, like this:

(define-module (deadbeef)
  #:use-module (guix packages)
  #:use-module (guix build-system gnu)
  =E2=80=A6)

Instead of simple use-modules=2E Does it make sense?