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From: Simon Tournier <zimon.toutoune@gmail.com>
To: "Ludovic Courtès" <ludo@gnu.org>, 65866@debbugs.gnu.org
Cc: "Josselin Poiret" <dev@jpoiret.xyz>,
	"Mathieu Othacehe" <othacehe@gnu.org>,
	"Ludovic Courtès" <ludo@gnu.org>,
	"Tobias Geerinckx-Rice" <me@tobias.gr>,
	"Ricardo Wurmus" <rekado@elephly.net>,
	"Christopher Baines" <guix@cbaines.net>
Subject: [bug#65866] [PATCH v2 5/8] build: Add dependency on Git.
Date: Mon, 25 Sep 2023 15:59:17 +0200	[thread overview]
Message-ID: <87sf724ami.fsf@gmail.com> (raw)
In-Reply-To: <8ec588483525275aac1eb057543a903bea707ead.1695421391.git.ludo@gnu.org>

Hi Ludo,

On Sat, 23 Sep 2023 at 00:28, Ludovic Courtès <ludo@gnu.org> wrote:
> * configure.ac: Check for ‘git’ and substitute ‘GIT’.
> * guix/config.scm.in (%git): New variable.
> * guix/self.scm (compiled-guix): Define ‘git’ and pass it to
> ‘make-config.scm’.
> (make-config.scm): Add #:git; emit a ‘%git’ variable.
> * doc/guix.texi (Requirements): Add it.

Moving the Git dependency to a daemon dependency tweaks a bit what we
control when “bootstrapping”, no?  Maybe I misread or misunderstand a
point.

Currently, the full bootstrap story requires the binary seed (well
documented in the manual :-)), running a Linux kernel and a Guix daemon.
And then, everything is built one after the other, resolving the chain
of dependencies.

And obviously, there is another chicken-or-the-egg problem barely
discussed.  For building something, we first need to communicate with
the world for fetching the source code to build. :-)

It is not Git specific and also happens with ’url-fetch’ – as reported
very early (see #22774 from 2016).  For instance, TLS is required before
Guix has built GnuTLS.  The chicken-or-the-egg had been solved by hiding
this dependency as a dependency of the daemon.  A hack.

Therefore, it means that the Reduced Binary Seed bootstrap is somehow
enlarged by what the Guix daemon depends on.

I mean, breaking the dependency cycles by introducing a dependency on
Git (as for fixing #63331) is not free of other dependencies.  It is
another hack when it could be avoided since the issue is about
Guile-GnuTLS.

It means we are doing a step back for a full bootstrap story, IMHO,
having a “builtin:git-download” makes less clear what are the hard
dependencies to what Guix is able to build from source starting from
almost nothing.

Cheers,
simon






  reply	other threads:[~2023-09-25 14:34 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-11 14:23 [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Ludovic Courtès
2023-09-11 14:25 ` [bug#65866] [PATCH 1/8] git-download: Move fallback code to (guix build git) Ludovic Courtès
2023-09-20 16:05   ` [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Maxim Cournoyer
2023-09-20 16:40     ` Simon Tournier
2023-09-22 21:53     ` Ludovic Courtès
2023-09-11 14:25 ` [bug#65866] [PATCH 2/8] git-download: Honor the ‘GUIX_DOWNLOAD_FALLBACK_TEST’ environment variable Ludovic Courtès
2023-09-20 16:07   ` [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Maxim Cournoyer
2023-09-11 14:25 ` [bug#65866] [PATCH 3/8] perform-download: Remove unused one-argument clause Ludovic Courtès
2023-09-20 16:09   ` [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Maxim Cournoyer
2023-09-11 14:25 ` [bug#65866] [PATCH 4/8] daemon: Add “git-download” built-in builder Ludovic Courtès
2023-09-20 17:32   ` [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Maxim Cournoyer
2023-09-21  7:42     ` Ludovic Courtès
2023-09-22 22:27       ` [bug#65866] [PATCH v2 " Ludovic Courtès
2023-09-22 22:27         ` [bug#65866] [PATCH v2 1/8] git-download: Move fallback code to (guix build git) Ludovic Courtès
2023-09-25  8:15           ` Simon Tournier
2023-09-25  9:24             ` [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Ludovic Courtès
2023-09-25 12:13               ` Simon Tournier
2023-09-22 22:27         ` [bug#65866] [PATCH v2 2/8] git-download: Honor the ‘GUIX_DOWNLOAD_FALLBACK_TEST’ environment variable Ludovic Courtès
2023-09-22 22:27         ` [bug#65866] [PATCH v2 3/8] perform-download: Remove unused one-argument clause Ludovic Courtès
2023-09-22 22:28         ` [bug#65866] [PATCH v2 4/8] daemon: Add “git-download” built-in builder Ludovic Courtès
2023-09-22 22:28         ` [bug#65866] [PATCH v2 5/8] build: Add dependency on Git Ludovic Courtès
2023-09-25 13:59           ` Simon Tournier [this message]
2023-09-26 14:05             ` [bug#65866] Bootstrapping without the daemon and all that Ludovic Courtès
2023-09-26 17:04               ` Simon Tournier
2023-10-12 10:54                 ` Ludovic Courtès
2023-10-16  8:46                   ` Simon Tournier
2023-09-22 22:28         ` [bug#65866] [PATCH v2 6/8] perform-download: Use the ‘git’ command captured at configure time Ludovic Courtès
2023-09-22 22:28         ` [bug#65866] [PATCH v2 7/8] git-download: Use “builtin:git-download” when available Ludovic Courtès
2023-09-25  8:33           ` Simon Tournier
2023-09-25  9:23             ` [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Ludovic Courtès
2023-09-25 12:37               ` Simon Tournier
2023-09-25 12:48               ` Simon Tournier
2023-09-25 15:49                 ` Maxim Cournoyer
2023-09-26 15:44                 ` bug#65866: " Ludovic Courtès
2023-09-26 17:13                   ` [bug#65866] " Simon Tournier
2023-10-01 15:02                     ` Ludovic Courtès
2023-10-16  9:11                       ` [bug#65866] Toward RFC? (was Re: [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts) Simon Tournier
2023-10-30 15:12                         ` Ludovic Courtès
2023-09-22 22:28         ` [bug#65866] [PATCH v2 8/8] tests: Assume ‘git’ is always available Ludovic Courtès
2023-09-11 14:25 ` [bug#65866] [PATCH 5/8] build: Add dependency on Git Ludovic Courtès
2023-09-20 17:57   ` [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Maxim Cournoyer
2023-09-22 22:00     ` Ludovic Courtès
2023-09-25 15:59       ` Maxim Cournoyer
2023-09-11 14:25 ` [bug#65866] [PATCH 6/8] perform-git-download: Use the ‘git’ command captured at configure time Ludovic Courtès
2023-09-20 17:34   ` [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Maxim Cournoyer
2023-09-11 14:25 ` [bug#65866] [PATCH 7/8] git-download: Use “builtin:git-download” when available Ludovic Courtès
2023-09-20 17:50   ` [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Maxim Cournoyer
2023-09-22 21:58     ` Ludovic Courtès
2023-09-25 15:56       ` Maxim Cournoyer
2023-09-11 14:25 ` [bug#65866] [PATCH 8/8] tests: Assume ‘git’ is always available Ludovic Courtès
2023-09-20 17:59   ` [bug#65866] [PATCH 0/8] Add built-in builder for Git checkouts Maxim Cournoyer

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