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Subject: [bug#29928] [PATCH 0/5] Optimize profile hooks
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From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
References: <20180101103336.8613-1-iyzsong@member.fsf.org>
Date: Thu, 11 Jan 2018 23:45:10 +0100
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To: =?UTF-8?Q?=E5=AE=8B=E6=96=87=E6=AD=A6?= <iyzsong@member.fsf.org>
Cc: 29928@debbugs.gnu.org

Hello!

=E5=AE=8B=E6=96=87=E6=AD=A6 <iyzsong@member.fsf.org> skribis:

> Hello, these patches make each profile hook run upon its specified intere=
sted
> inputs, eg: the 'info-dir-file' hook only get inputs with info manuals,
> install a package without info files won't trigger it.  Thus reduce the c=
hance
> and time to rerun them when your profile changed.

That=E2=80=99s an area in need of improvements, thanks for looking into it!

> One drawback is 'guix package --dry-run' no longer report the derivations=
 of
> profile hooks, and the derivation of profile it reports is not the real o=
ne.
> Addition files will be built when the profiles hooks are run.

FWIW I=E2=80=99m not entirely convinced by the approach.  As discussed earl=
ier,
I=E2=80=99d like to experiment with a notion of =E2=80=9Cbuild rounds=E2=80=
=9D: the first round
would build a profile without any hooks, the second round would,
depending on what the profile contains, rebuild it with certain hooks.

I don=E2=80=99t have anything to show yet, though=E2=80=A6

Ludo=E2=80=99.