From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:39672)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1dG9WM-0006Cm-17
	for guix-patches@gnu.org; Wed, 31 May 2017 15:43:07 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1dG9WI-0006nT-4m
	for guix-patches@gnu.org; Wed, 31 May 2017 15:43:06 -0400
Received: from debbugs.gnu.org ([208.118.235.43]:45201)
	by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16)
	(Exim 4.71) (envelope-from <Debian-debbugs@debbugs.gnu.org>)
	id 1dG9WI-0006nG-1W
	for guix-patches@gnu.org; Wed, 31 May 2017 15:43:02 -0400
Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1dG9WH-0005B2-Rb
	for guix-patches@gnu.org; Wed, 31 May 2017 15:43:01 -0400
Subject: bug#27162: [PATCH 0/6] Display how much will be downloaded
Resent-Message-ID: <handler.27162.B27162.149625975719866@debbugs.gnu.org>
MIME-Version: 1.0
In-Reply-To: <20170531134941.8012-1-ludo@gnu.org>
References: <20170531134941.8012-1-ludo@gnu.org>
From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Date: Wed, 31 May 2017 12:42:29 -0700
Message-ID: <CAN-vT6SAP0vadGa0tXabFBvmKhmmUWMoQO3BRTa6ESDPojpEhw@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
List-Id: <guix-patches.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/guix-patches>,
	<mailto:guix-patches-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/guix-patches/>
List-Post: <mailto:guix-patches@gnu.org>
List-Help: <mailto:guix-patches-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/guix-patches>,
	<mailto:guix-patches-request@gnu.org?subject=subscribe>
Errors-To: guix-patches-bounces+kyle=kyleam.com@gnu.org
Sender: "Guix-patches" <guix-patches-bounces+kyle=kyleam.com@gnu.org>
To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: 27162@debbugs.gnu.org

Hi!

On Wed, May 31, 2017 at 6:49 AM, Ludovic Court=C3=A8s <ludo@gnu.org> wrote:
> Hello!
>
> With this patch series, =E2=80=98show-what-to-build=E2=80=99 can display =
the download
> size and warn about lack of disk space when needed:
>
>   $ ./pre-inst-env guix build synfigstudio -n
>   substitute: updating list of substitutes from 'https://bayfront.guixsd.=
org'... 100.0%
>   10.8 MB would be downloaded:
>      /gnu/store/jq80lq3xhib81fi2v6j7ygh7mqdjrjsx-synfigstudio-1.2.0
>      /gnu/store/azvp0257q9yhl0b409q1s6h67pfhaknr-libxml++-3.0.1
>      /gnu/store/bjmwcqxr32g48jzwc0zc993m8x3ymq5h-synfig-1.2.0
>      /gnu/store/lxmviq543w2a4ahc4c77i542sl921bbl-mlt-6.4.1
>   guix build: warning: at least 73.8 MB needed but only 42.0 MB available=
 in /gnu/store
>
> Thoughts?

This is really neat! Thanks for that. Shouldn't the default behavior
of build to stop right there (even without the -n flag) and errors out
when it "knows" there won't be enough space to successfully build the
derivations? This would prevent bad surprises and is still
non-interactive. If the current ability of failing a build because of
lack of disk space would still be desired for some reason, a force
flag could allow it anyway.

My 2 cents,

Maxim