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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: [PATCH 06/10] gnu: mesa: Enable wayland support.
Date: Thu, 21 Jul 2016 18:02:58 +0200
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	(David Craven's message of "Thu, 21 Jul 2016 14:19:26 +0200")
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To: David Craven <david@craven.ch>
Cc: guix-devel <guix-devel@gnu.org>

David Craven <david@craven.ch> skribis:

> When trying to run guix size on a custom built package I get a no
> substitue information available message...

Quoting the manual:

     When the package passed to =E2=80=98guix size=E2=80=99 is available in=
 the store,
  =E2=80=98guix size=E2=80=99 queries the daemon to determine its dependenc=
ies, and
  measures its size in the store, similar to =E2=80=98du -ms --apparent-siz=
e=E2=80=99
  (*note (coreutils)du invocation::).

     When the given package is _not_ in the store, =E2=80=98guix size=E2=80=
=99 reports
  information based on the available substitutes (*note Substitutes::).
  This makes it possible it to profile disk usage of store items that are
  not even on disk, only available remotely.

Maybe the package in question was neither in your store, nor on the
substitute server?

HTH,
Ludo=E2=80=99.