From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: pkg-config disappeared
Date: Sat, 15 Jun 2013 15:09:24 +0200
Message-ID: <871u83bjwb.fsf@gnu.org>
References: <201306142256.32319.andreas@enge.fr>
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In-Reply-To: <201306142256.32319.andreas@enge.fr> (Andreas Enge's message of
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To: Andreas Enge <andreas@enge.fr>
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Andreas Enge <andreas@enge.fr> skribis:

> The package pkg-config does not exist any more:
>
> $ guix package -i pkg-config
> guix package: error: pkg-config: package not found
>
> This has probably to do with the cross-compilation changes.
>
> In pkg-config.scm, there is a
>    (define-syntax pkg-config
> I can use pkg-config in my package definitions, but it does not seem to b=
e=20
> exported to "guix package".

It=E2=80=99s actually exported (see the =E2=80=98define-module=E2=80=99 for=
m) but since it=E2=80=99s not
a =E2=80=98package=E2=80=99 object, the =E2=80=98fold-packages=E2=80=99 pro=
cedure (used by =E2=80=9Cguix
package=E2=80=9D et al.) skips it.

I just committed this to solve the problem:


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diff --git a/gnu/packages/pkg-config.scm b/gnu/packages/pkg-config.scm
index 9f10440..eb5f748 100644
--- a/gnu/packages/pkg-config.scm
+++ b/gnu/packages/pkg-config.scm
@@ -24,7 +24,10 @@
   #:use-module (guix build-system trivial)
   #:export (pkg-config))
 
-(define %pkg-config
+;; This is the "primitive" pkg-config package.  People should use `pkg-config'
+;; (see below) rather than `%pkg-config', but we export `%pkg-config' so that
+;; `fold-packages' finds it.
+(define-public %pkg-config
   (package
    (name "pkg-config")
    (version "0.27.1")

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