From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Love <fx@gnu.org>
Subject: Re: fixing --check saying outputs not valid
Date: Mon, 11 Sep 2017 11:31:43 +0100
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In-Reply-To: <87wp589afc.fsf@gnu.org> ("Ludovic
	\=\?iso-8859-1\?Q\?Court\=E8s\?\=
	\=\?iso-8859-1\?Q\?\=22's\?\= message of "Fri, 8
	Sep 2017 22:56:23 +0200")
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To: Ludovic =?iso-8859-1?Q?Court=E8s?= <ludo@gnu.org>
Cc: help-guix@gnu.org

Ludovic Court=C3=A8s <ludo@gnu.org> writes:

> To run --check, you must first already have the store item(s) available.
>
> So you would first run:
>
>   guix build hwloc
>
> which will ensure both hwloc and hwloc:lib are in your store, possibly
> by downloading substitutes.
>
> Then you can run =E2=80=9Cguix build hwloc --check -L --no-grafts=E2=80=
=9D, which will
> build hwloc locally and raise an error if hwloc:{out,lib} are not
> bit-identical to what you had in store.

[Should that be documented as the procedure to use?]

The trouble is that I don't get a second build with --check:

  $ ./pre-inst-env guix build hwloc --check -L --no-grafts
  guile: warning: failed to install locale
  warning: failed to install locale: Invalid argument
  @ build-started /gnu/store/7d2lk82ak7n0awbr1k5bllwfc43dicsl-hwloc-1.11.8.=
drv - x86_64-linux /var/log/guix/drvs/7d//2lk82ak7n0awbr1k5bllwfc43dicsl-hw=
loc-1.11.8.drv.bz2
  grafting '/gnu/store/n2l4ryq1572wnfh4yxljjbh2q40v6jr0-hwloc-1.11.8-debug'=
 -> '/gnu/store/dgfpcmkx7wzxjj3d1q6l5dmzjr9z6wz5-hwloc-1.11.8-debug'...
  grafting '/gnu/store/hf6k2i6aqqs50p181bs1aa7xw49kd6xn-hwloc-1.11.8-lib' -=
> '/gnu/store/jrxiynx443d894and51pa8bylaib0bkc-hwloc-1.11.8-lib'...
  grafting '/gnu/store/f969ab3pfvgn28xc812h97jsyif2z5vs-hwloc-1.11.8' -> '/=
gnu/store/2mind69xpdx8wv6ixmjix0f12dd2qb2v-hwloc-1.11.8'...
  /gnu/store/dgfpcmkx7wzxjj3d1q6l5dmzjr9z6wz5-hwloc-1.11.8-debug
  /gnu/store/jrxiynx443d894and51pa8bylaib0bkc-hwloc-1.11.8-lib
  /gnu/store/2mind69xpdx8wv6ixmjix0f12dd2qb2v-hwloc-1.11.8

> Makes sense?
>
> (The =E2=80=9C--no-grafts=E2=80=9D part is because what you care about is=
 the actual
> build of hwloc, not the grafting derivation.)
>
> Ludo=E2=80=99.