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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Guix Devel Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1643917819; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post:dkim-signature; bh=IaIU5syc7G+8AdkhdqzDLiK7xo9cMPrs+hn/SsfXdWI=; b=MoqklUNSZEbD2S4rVtcr2kNN+05Y2POaM/x2bZmUicS7/0FKwjkFnRKXS9ESr5gpzXQ81f 8z0ifCVtDaDE7NToRJvCINyIWkypwcQsiAujbKJADPRID+mGIWCRDKD8lNyGWbKDFLFuog O1Y2FwqpZDKbeQpyjlpDJClxoKzsY30PpnMWveUM2Cymk1ClK82GwQMP5nHP/q+rRTMj8z brDIahAv1DjqQcaudBIiMsw+xIOKpUjTi7goZl/7J70CX3AM6btWqxc91lt7HS0o/424oq SmcZSPvB49MsqbnEgUBUi0+J+1aq3ZdL3YJY4vaVvYvJZ7qpQ/1tFm7RAB6DFw== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1643917819; a=rsa-sha256; cv=none; b=mSBNp0GI/7Wffoeunw0PI855MG1h4XTe6vpadyyNMtQLoIChBSfnwCS5iuY9eiSSJ33xya 3qlpzJVDLyOPft3XA2ILJOMFV+HhGSI029tuCRdQJfiwwIX8r1jwaaVC+xri204jHZRJsi rpnLb22Vfh2dfp9f4gUlBBkiG6wzr9avptRQkFKM9yG6UFdfGZV5VMqZ0ch4Jf+0EuvlRa i1VdFTd3Ntas0uyKmMiNrYpjcDyMmpi5eCplLNWMIfnIIxXzDsRaWSplpyySoZ9lEoeXYX SDmGwbHQAdWFPXIBCTmi5a2Yy7yn0Ya6daZjvuK/z6S3DgsjIvO9qT4bYgxPzg== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gmail.com header.s=20210112 header.b=Ns5oW3nN; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -0.53 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gmail.com header.s=20210112 header.b=Ns5oW3nN; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 57A9537E7B X-Spam-Score: -0.53 X-Migadu-Scanner: scn1.migadu.com X-TUID: YcRJxk2zICq2 Hi Timothy, On Thu, 03 Feb 2022 at 10:46, Timothy Sample wrote: >> But the question is if Disarchive dissambles and preserves external >> patches. Timothy? [...] > The bad news is that 0.75 is not there. At first I was going to > apologize for the shortcomings of the sampling approach... until I > realized you are trying to trick me! ;) Unless I=E2=80=99m misreading t= he Git > history, that patch appeared and disappeared on core-updates and was > never part of master. Because of the good news, the same could be applied for these patches, no? For instance, one missing patch=E2=80=93as Maxime pointed it=E2=80=93is the= re: https://github.com/archlinux/svntogit-packages/blob/155510dd18d2f290085f40d= 2a95a3701db4a224d/texlive-bin/repos/extra-x86_64/pdftex-poppler0.75.patch And SWH contains it: https://archive.softwareheritage.org/browse/revision/155510dd18d2f290085f40= d2a95a3701db4a224d/?path=3Dtexlive-bin/repos/extra-x86_64/pdftex-poppler0.7= 5.patch Therefore, somehow it =E2=80=9Conly=E2=80=9D misses to dissamble this data = and add an entry to the database, no? I miss what you mean by =C2=ABwas never part of master=C2=BB. After the me= rge, what was core-updates and what was master is somehow indistinguishable, no? Or are you walking only to first-parent after merge commit? Well, Git history and sorting leads to headache; as git-log doc shows. :-) I think it is fine to simplify =E2=80=9Ccomplex=E2=80=9D history with a sam= pling considering only first-parent walk. > The way the PoG script tracks down sources is pretty robust. It takes > the derivation graph to be canonical, and only uses the graph of > high-level objects (packages, origins, etc.) for extra info. I do my > best to follow the links of the high-level objects, and then verify that > I did a good job by lowering them and checking coverage against the set > of derivations found by following the derivation graph. Since the > derivation graph necessarily contains everything that matters, this is a > good way to track down all the high-level objects that matter. See > > for a rather scary looking procedure that finds the edges of the > high-level object graph. Cool! Thanks for explaining and pointing how PoG is doing. > That being said, coverage is not perfect. The most obvious problem (to > me) is the sampling approach. Surely there are sources that are missed > by only examining one commit per week. This can be checked and fixed by > using data from the Guix Data Service, which has data from essentially > every Guix commit. No, the Data Service and even Cuirass are using a sampling approach too; they do not process all the commits. Cuirass uses a =C2=ABevery 5 minutes=C2=BB approach; please CI savvy people correct me if I mistake. The Data Service uses a =C2=ABbatch guix-commits= =C2=BB approach; more details in this thread [1]. Well, the coverage is twofold, IMHO. 1. preserve what is currently entering in Guix 2. archive what was available in Guix About #1, the main mechanism are sources.json, =E2=80=9Cguix lint=E2=80=9D,= and update disarchive-db (now done by CI). What is missed should be fixed by #2. About #2, it is hard to fix all the issues at once. One commit per week already provides a good view to spot some problems. Somehow, process all the commits just means burn more CPU; it seems =E2=80=9Ceasy=E2=80=9D o= nce the infrastructure is in-place, no? 1: Cheers, simon