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Mon, 03 May 2021 05:05:48 -0700 (PDT) From: zimoun To: Ricardo Wurmus , Konrad Hinsen Subject: Re: Managing data files in workflows In-Reply-To: <87a6pckwf9.fsf@elephly.net> References: <87r1k2ti7k.fsf@elephly.net> <87czvmt5w3.fsf@elephly.net> <87h7kq2kzy.fsf@elephly.net> <87blaqz5mq.fsf@elephly.net> <87a6pckwf9.fsf@elephly.net> Date: Mon, 03 May 2021 13:58:40 +0200 Message-ID: <86eeeovxjj.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::430; envelope-from=zimon.toutoune@gmail.com; helo=mail-wr1-x430.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 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: gwl-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gwl-devel@gnu.org Errors-To: gwl-devel-bounces+larch=yhetil.org@gnu.org Sender: "gwl-devel" X-Migadu-Flow: FLOW_IN ARC-Message-Signature: i=1; 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aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20161025 header.b="GMXbdG/N"; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of gwl-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=gwl-devel-bounces@gnu.org X-Migadu-Spam-Score: -3.16 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20161025 header.b="GMXbdG/N"; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of gwl-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=gwl-devel-bounces@gnu.org X-Migadu-Queue-Id: DF157183DA X-Spam-Score: -3.16 X-Migadu-Scanner: scn0.migadu.com X-TUID: TIz6NQFRxHyQ Hi, On Mon, 03 May 2021 at 11:18, Ricardo Wurmus wrote: > I=E2=80=99d like to introduce modifiers =E2=80=9Cimmutable=E2=80=9D and = =E2=80=9Cmutable=E2=80=9D, so that=20 > you can write =E2=80=9Cimmutable file "whatever" you "want"=E2=80=9D etc.= =20 > =E2=80=9Cimmutable=E2=80=9D would take care of recording hashes and check= ing=20 > previously recorded hashes in a local state directory. Ah, maybe it is same idea that we discussed some days ago on #guix-hpc. To me, everything should be =E2=80=9Cimmutable=E2=80=9C and stored =E2=80= =9Csomewhere=E2=80=9D. Somehow, you do not need to hash all the contents but only hash all the inputs hashes and the =E2=80=99process=E2=80=99 itself. And it is done som= ehow for packages. The only intense hash is the fixed-output, i.e., the initial data input. Well, I have not sent my explanations because my picture about how GWL currently works is a bit vague for me. And I have not done my homework, yet. Without say, I need to re-read the previous discussions we had on the topic. :-) However, I miss what =E2=80=9Cmutable=E2=80=9D could be? Cheers, simon