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Subject: bug#30952: Grafting sometimes include all the outputs of a package
Resent-From: ludo@HIDDEN (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
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From: ludo@HIDDEN (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Date: Mon, 26 Mar 2018 15:59:38 +0200
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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.

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: ludo@HIDDEN (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#30952: Acknowledgement (Grafting sometimes include all the
 outputs of a package)
Message-ID: <handler.30952.B.152207279428857.ack <at> debbugs.gnu.org>
References: <87y3ifc4z9.fsf@HIDDEN>
X-Gnu-PR-Message: ack 30952
X-Gnu-PR-Package: guix
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Date: Mon, 26 Mar 2018 14:00:02 +0000

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Message sent to bug-guix@HIDDEN:

Subject: bug#30952: Grafting sometimes include all the outputs of a package
Resent-From: Simon Tournier <zimon.toutoune@HIDDEN>
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To: ludo@HIDDEN (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Cc: 30952 <at> debbugs.gnu.org
From: Simon Tournier <zimon.toutoune@HIDDEN>
In-Reply-To: <87y3ifc4z9.fsf@HIDDEN> ("Ludovic =?UTF-8?Q?Court=C3=A8s?="'s message of "Mon, 26 Mar 2018 15:59:38 +0200")
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Date: Mon, 16 Jun 2025 12:07:09 +0200
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Hi Ludo

What is the status of this old bug

    https://issues.guix.gnu.org/issue/30952

?

On Mon, 26 Mar 2018 at 15:59, ludo@HIDDEN (Ludovic Court=C3=A8s) wrote:

> 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 h=
as =E2=80=9Cout=E2=80=9D and
> =E2=80=9Cdoc=E2=80=9D:
>
> $ guix gc --referrers "/gnu/store/ia69421l4wxny3k38zj5ql7bxsnasbfq-networ=
k-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-networ=
k-manager-1.8.4.drv"
> /gnu/store/332xw1rgi24v7vf3m8v8wgzbn34n037a-network-manager-applet-1.8.4.=
drv
> /gnu/store/m2j527i7mfvh6zayx3yn4jv64hqw28s0-network-manager-openvpn-1.8.0=
.drv
> $ head -c 50 "/gnu/store/ia69421l4wxny3k38zj5ql7bxsnasbfq-network-manager=
-1.8.4.drv"
> Derive([("doc","/gnu/store/53lsazvjjsf6ib0s2cgxrqn$
> $ head -c 50  "/gnu/store/gpvbfa0bgz5v0n4lcyv0mp3mh44p8dvy-network-manage=
r-1.8.4.drv"
> Derive([("out","/gnu/store/hsy71fkli9blh34np008j3j
>
> 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 =
used in
> a gexp for instance.
>
> That=E2=80=99s because =E2=80=98package-compiler=E2=80=99 calls =E2=80=98=
package-derivation=E2=80=99, which
> doesn=E2=80=99t specify which output(s) we=E2=80=99re interested in.

It contains this unique message from 2018. :-)

Cheers,
simon

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