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[2a01:cb04:60a:1100:6ed8:a3f5:9c74:d082]) by smtp.gmail.com with ESMTPSA id d9-20020a05600c34c900b0040b2c195523sm3256478wmq.31.2023.11.29.11.14.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Nov 2023 11:14:23 -0800 (PST) From: Simon Tournier To: Ludovic =?utf-8?Q?Court=C3=A8s?= , Maxim Cournoyer Cc: Ricardo Wurmus , guix-devel Subject: Re: Building and caching old Guix derivations for a faster time machine In-Reply-To: <87h6ldiqyh.fsf@gnu.org> References: <87o7g29c94.fsf@elephly.net> <878r6xu2pe.fsf@gnu.org> <877cmfd6tm.fsf@gmail.com> <87h6ldiqyh.fsf@gnu.org> Date: Wed, 29 Nov 2023 17:34:26 +0100 Message-ID: <87plzsr019.fsf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::436; envelope-from=zimon.toutoune@gmail.com; helo=mail-wr1-x436.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: guix-devel-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN X-Migadu-Scanner: mx13.migadu.com X-Migadu-Spam-Score: -7.05 X-Spam-Score: -7.05 X-Migadu-Queue-Id: 5E9C3619C5 X-TUID: K3P7JyFdTyO0 Hi, On mer., 22 nov. 2023 at 19:27, Ludovic Court=C3=A8s wrote: > For long-term storage though, we could choose to keep lzip only (because > it compresses better). Not something we can really do with the current > =E2=80=98guix publish=E2=80=99 setup though. It looks good to me. For me, the priority list looks like: 1. Keep for as longer as we can all the requirements for running Guix itself, e.g., =E2=80=9Cguix time-machine=E2=80=9D. Keep all the dependenc= ies and all the outputs of derivations. At least, for all the ones the build farms are already building. 2. Keep for 3-5 years all the outputs for specific Guix revision, as v1.0, v1.1, v1.2, v1.3, v1.4. And some few others. Cheers, simon