From: Simon Tournier <zimon.toutoune@gmail.com>
To: wifi <80211.532nf@simplelogin.co>, Guix Help <help-guix@gnu.org>
Subject: Re: How to export downloaded files for a system profile?
Date: Mon, 02 Dec 2024 19:59:03 +0100 [thread overview]
Message-ID: <87cyi9oqrs.fsf@gmail.com> (raw)
In-Reply-To: <173300778691.7.1670758004836259934.514586941@simplelogin.co>
[-- Attachment #1: Type: text/plain, Size: 906 bytes --]
Hi,
On Sat, 30 Nov 2024 at 23:03, wifi via <help-guix@gnu.org> wrote:
> I've been digging around looking for a way to build a complete build
> dependency and runtime dependency graph of every package and their
> derivations, but there doesn't appear to be a straightforward way to
> do it. If such a complete graph could be built, it seems to be only a
> matter of finding the leaf nodes and exporting those from the store.
Well, I think that you can write a manifest that walks the whole graph
and find the “leaf” packages, i.e., the packages that have no
dependents: packages that do appear elsewhere in any other packages.
Maybe there is some typo, but I think this manifest builds all the leaf
packages and thus it will build the whole packages of Guix.
Assuming, there is no mistake, I count 14143 leaf packages over 32459
packages.
Hope that helps.
Cheers,
simon
[-- Attachment #2: manifest.scm --]
[-- Type: text/plain, Size: 1193 bytes --]
(use-modules (gnu packages)
(guix packages)
(guix sets)
(ice-9 match)
(ice-9 vlist)
(srfi srfi-1))
(define all (all-packages))
(define (p->k p)
(string-append (package-name p) "@" (package-version p)))
(define vall-packages
(fold (lambda (package result)
(vhash-cons (p->k package) package result))
vlist-null
all))
(define vleaf-packages
(vhash-fold (lambda (key package result)
(let loop ((dependencies (package-direct-inputs package))
(updated result))
(match dependencies
('() updated)
((or ((_ p) . tail)
((_ p _) . tail))
(if (package? p)
(loop tail
(vhash-delete (p->k p) updated))
(loop tail updated))))))
vall-packages
vall-packages))
(define leaf-packages
(vhash-fold (lambda (key package result)
(cons package result))
'()
vleaf-packages))
(packages->manifest
leaf-packages)
prev parent reply other threads:[~2024-12-02 19:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-30 23:03 How to export downloaded files for a system profile? wifi via
2024-12-02 18:59 ` Simon Tournier [this message]
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