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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= In-Reply-To: <877cds0z4l.fsf@gnu.org> ("Ludovic =?UTF-8?Q?Court=C3=A8s?="'s message of "Thu, 11 Jul 2024 16:41:46 +0200") References: <87bk34113k.fsf@inria.fr> <877cds0z4l.fsf@gnu.org> Date: Thu, 11 Jul 2024 17:33:24 +0200 Message-ID: <87wmlsymd7.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: bug-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN X-Spam-Score: -7.30 X-Migadu-Queue-Id: 4334472456 X-Migadu-Scanner: mx10.migadu.com X-Migadu-Spam-Score: -7.30 X-TUID: seTdRkIWPABv Ludovic Court=C3=A8s skribis: > The =E2=80=9Cright=E2=80=9D one: > > $ setarch -R guix time-machine -q --commit=3D0ff72d105 -- build avahi -d > /gnu/store/fy39r2y8dg2ycdzvnbqyfd1kpandnpxb-avahi-0.8.drv > > > The =E2=80=9Cwrong=E2=80=9D one: > > $ setarch -R guix time-machine -q --commit=3D0ff72d105 -- build avahi -d > /gnu/store/vhj8f01bwddshnc75ar5z62ndcij4pgy-avahi-0.8.drv Turns out the =E2=80=9Cright=E2=80=9D one uses =E2=80=98builtin:git-downloa= d=E2=80=99, the =E2=80=9Cwrong=E2=80=9D one doesn=E2=80=99t: --8<---------------cut here---------------start------------->8--- $ guix time-machine -q --commit=3D0ff72d105 -- repl=20 GNU Guile 3.0.9 Copyright (C) 1995-2023 Free Software Foundation, Inc. Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'. This program is free software, and you are welcome to redistribute it under certain conditions; type `,show c' for details. Enter `,help' for help. scheme@(guix-user)> ,use(guix) scheme@(guix-user)> (define set-builders! (record-modifier (@@ (guix store)= ) 'built-in-builders)) ;;; :2:0: warning: possibly unused local top-level variable `set-bui= lders!' scheme@(guix-user)> (define s (open-connection)) ;;; :3:0: warning: possibly unused local top-level variable `s' scheme@(guix-user)> (set-builders! s (delay '("download"))) $1 =3D #:4:17 ()>> scheme@(guix-user)> ,use(gnu packages avahi) scheme@(guix-user)> ,run-in-store (lower-object avahi) error: #{ %make-platform-procedure/abi-check}#: unbound variable hint: Did you forget a `use-modules' form? $2 =3D # /gnu/store/4gzpnfm6pw7cwwgrmswrsibbzdxz1j1w-avahi-0.8 7fad68382af0> scheme@(guix-user)> (run-with-store s (lower-object avahi)) $3 =3D # /gnu/store/64f62b0klc3mrncad6x79cwfd3smmf8z-avahi-0.8 7fad68d15230> --8<---------------cut here---------------end--------------->8--- QED. Presumably whether =E2=80=98builtin:git-download=E2=80=99 is used changes t= he DAG traversal order, which could explain this discrepancy. It does mean that all the users running an old guix-daemon find themselves having no substitutes for =E2=80=98guix pull=E2=80=99. Ouch. Ludo=E2=80=99.