GNU bug report logs - #30952
Grafting sometimes include all the outputs of a package

Message received at submit <at> debbugs.gnu.org:

Received: (at submit) by debbugs.gnu.org; 26 Mar 2018 13:59:54 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 26 09:59:54 2018
Received: from localhost ([127.0.0.1]:54462 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1f0SfC-0007VM-CU
	for submit <at> debbugs.gnu.org; Mon, 26 Mar 2018 09:59:54 -0400
Received: from eggs.gnu.org ([208.118.235.92]:44712)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <ludo@HIDDEN>) id 1f0SfA-0007V7-Al
 for submit <at> debbugs.gnu.org; Mon, 26 Mar 2018 09:59:52 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
 (envelope-from <ludo@HIDDEN>) id 1f0Sf4-00038V-8d
 for submit <at> debbugs.gnu.org; Mon, 26 Mar 2018 09:59:47 -0400
X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,T_RP_MATCHES_RCVD
 autolearn=disabled version=3.3.2
Received: from lists.gnu.org ([2001:4830:134:3::11]:39888)
 by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32)
 (Exim 4.71) (envelope-from <ludo@HIDDEN>) id 1f0Sf4-00038P-4x
 for submit <at> debbugs.gnu.org; Mon, 26 Mar 2018 09:59:46 -0400
Received: from eggs.gnu.org ([2001:4830:134:3::10]:35679)
 by lists.gnu.org with esmtp (Exim 4.71)
 (envelope-from <ludo@HIDDEN>) id 1f0Sf2-0007K6-Rb
 for bug-guix@HIDDEN; Mon, 26 Mar 2018 09:59:45 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
 (envelope-from <ludo@HIDDEN>) id 1f0Sez-00036Y-MR
 for bug-guix@HIDDEN; Mon, 26 Mar 2018 09:59:44 -0400
Received: from hera.aquilenet.fr ([185.233.100.1]:45468)
 by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)
 (Exim 4.71) (envelope-from <ludo@HIDDEN>) id 1f0Sez-000369-GQ
 for bug-guix@HIDDEN; Mon, 26 Mar 2018 09:59:41 -0400
Received: from localhost (localhost [127.0.0.1])
 by hera.aquilenet.fr (Postfix) with ESMTP id 24C2912383
 for <bug-guix@HIDDEN>; Mon, 26 Mar 2018 15:59:40 +0200 (CEST)
X-Virus-Scanned: Debian amavisd-new at aquilenet.fr
Received: from hera.aquilenet.fr ([127.0.0.1])
 by localhost (hera.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024)
 with ESMTP id B0mWkIsk4sxl for <bug-guix@HIDDEN>;
 Mon, 26 Mar 2018 15:59:39 +0200 (CEST)
Received: from ribbon (unknown [193.50.110.93])
 by hera.aquilenet.fr (Postfix) with ESMTPSA id 51D8312322
 for <bug-guix@HIDDEN>; Mon, 26 Mar 2018 15:59:39 +0200 (CEST)
From: ludo@HIDDEN (Ludovic =?utf-8?Q?Court=C3=A8s?=)
To: bug-guix@HIDDEN
Subject: Grafting sometimes include all the outputs of a package
X-URL: http://www.fdn.fr/~lcourtes/
X-Revolutionary-Date: 6 Germinal an 226 de la =?utf-8?Q?R=C3=A9volution?=
X-PGP-Key-ID: 0x090B11993D9AEBB5
X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc
X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4  0CFB 090B 1199 3D9A EBB5
X-OS: x86_64-pc-linux-gnu
Date: Mon, 26 Mar 2018 15:59:38 +0200
Message-ID: <87y3ifc4z9.fsf@HIDDEN>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]
 [fuzzy]
X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x
X-Received-From: 2001:4830:134:3::11
X-Spam-Score: -5.0 (-----)
X-Debbugs-Envelope-To: submit
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
X-Spam-Score: -5.0 (-----)

Hello,

I noticed my /run/current-system would depend on two different
=E2=80=98network-manager=E2=80=99.

Looking more closely, both are grafts, but the different is that the
first one only has the =E2=80=9Cout=E2=80=9D output while the other one has=
 =E2=80=9Cout=E2=80=9D and
=E2=80=9Cdoc=E2=80=9D:

--8<---------------cut here---------------start------------->8---
$ guix gc --referrers "/gnu/store/ia69421l4wxny3k38zj5ql7bxsnasbfq-network-=
manager-1.8.4.drv"
/gnu/store/68gfp5ac9rp4p9vsb0rrnvxa2fy1w4w9-profile.drv
/gnu/store/6mivj4kfa7qx1z47f3kgfxfzm4148wwi-info-dir.drv
/gnu/store/7skqpm8a0h6cvzwbj6m0zjjdgg676gm1-dbus-system-services.drv
/gnu/store/84xhi03ikjcrr6vpkbvqy12a5s9imbxx-etc-polkit-1.drv
/gnu/store/8gcq4gvghnp830kz9rs4ra9b8m8cggmn-dbus-configuration.drv
/gnu/store/c40mizbls6b91jifib2z9xhasqc2m45f-xdg-desktop-database.drv
/gnu/store/dc1vrv9jf8bf1dl94v8k04rjv69rjc6s-ca-certificate-bundle.drv
/gnu/store/hbzq0f0fmfylv380k315j56qpqj7hpbi-shepherd-networking.scm.drv
/gnu/store/jhdxpzj8f4ar8bp8pi3nvjn4fkiqg3d5-manual-database.drv
/gnu/store/q94jkh8vf6sdvx9lg9gx9z6nans85sai-fonts-dir.drv
/gnu/store/yz5mp49js753xcidl20lddl5xq2i2c9f-xdg-mime-database.drv
$ guix gc --referrers "/gnu/store/gpvbfa0bgz5v0n4lcyv0mp3mh44p8dvy-network-=
manager-1.8.4.drv"
/gnu/store/332xw1rgi24v7vf3m8v8wgzbn34n037a-network-manager-applet-1.8.4.drv
/gnu/store/m2j527i7mfvh6zayx3yn4jv64hqw28s0-network-manager-openvpn-1.8.0.d=
rv
$ head -c 50 "/gnu/store/ia69421l4wxny3k38zj5ql7bxsnasbfq-network-manager-1=
.8.4.drv"
Derive([("doc","/gnu/store/53lsazvjjsf6ib0s2cgxrqn$=20
$ head -c 50  "/gnu/store/gpvbfa0bgz5v0n4lcyv0mp3mh44p8dvy-network-manager-=
1.8.4.drv"
Derive([("out","/gnu/store/hsy71fkli9blh34np008j3j
--8<---------------cut here---------------end--------------->8---

I believe this is because the optimization in commit
482fda2729c3e76999892cb8f9a0391a7bd37119 work as expected when the graft
is used as a package input, but doesn=E2=80=99t fire when the package is us=
ed in
a gexp for instance.

That=E2=80=99s because =E2=80=98package-compiler=E2=80=99 calls =E2=80=98pa=
ckage-derivation=E2=80=99, which
doesn=E2=80=99t specify which output(s) we=E2=80=99re interested in.

Ludo=E2=80=99.