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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 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1614363567; 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=1I1JU7JdhxKD3oLtlUVgOYCoa1yQ8AZ4EVM8WgdQavI=; b=F7xviOIlJwRZeaBM+767NdTlEqWlbCAwbfnNHmm5OqWE8TiiyXHj2myD3cN3GKW68Jrsy3 wG89kxEd/OCvTvjFpzvoZG8KyhgDmaEDA3eEcPM18d49ajkSVXTkygg4pN+ka6vzhFi1A5 s3VYlxdX/M2oDINm/bdY05a9HRNlv9zH3eAGPWhHJfcYG4nW4qx2puBiOh7+ZZEc+5bffM wY1LCfncshKa755neg3x+zHM2sqoU9OM9FijguUhTLB5jQwlMgp5fqWRTDeHY5Rt1dm1S1 KhNCmYUeEc3tzl2tDjrCp7KqdfCiEzz3kep/HLcNMULJ63dyK9mEsMezEUjY2Q== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1614363567; a=rsa-sha256; cv=none; b=Yfl7+x2soEDSv6miTdLXECmuhYdb9Ke/Qlk0yTaCdt42MnXq9s95FAZWYrdrymsmERTAFU F7hEV7YAIGCdOrPumUcnoCns6KyMAwdZdROzPwW1CCrWX7DNtNM7hoaI6x0uyoIeBM5fnN RUqHl/71bGGgHSWZnxT8G0pg79WyjCuiYXjExlnZAWkAbPUeCd9PSYV/sqndTBYhegtCwp UvNpr6cHPyehigYN6hG3f5NX1BMUbBHkf5WpuBxATRyQYlnVThEUkmuRqUTSJ6VpllNUKg W/sjBuRs2PB+cNN0TUN8pcKtH8HfNuZietpsx8F061JmVIhR6Xdux/Ty8scC8Q== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20161025 header.b=SGUHRGVF; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of guix-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-devel-bounces@gnu.org X-Migadu-Spam-Score: -3.07 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20161025 header.b=SGUHRGVF; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of guix-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-devel-bounces@gnu.org X-Migadu-Queue-Id: 0EDC212849 X-Spam-Score: -3.07 X-Migadu-Scanner: scn1.migadu.com X-TUID: eFFskj000JPC Hi Andreas, On Fri, 26 Feb 2021 at 18:02, Andreas Enge wrote: > How can I personally keep the old variant? I would go with inferior. --8<---------------cut here---------------start------------->8--- (use-modules (guix inferior) (guix channels) (srfi srfi-1)) ;for 'first' (define channels ;; This is the old revision from which we want to ;; extract xpdf (list (channel (name 'guix) (url "https://git.savannah.gnu.org/git/guix.git") (commit "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx")))) (define inferior (inferior-for-channels channels)) (packages->manifest (list (first (lookup-inferior-packages inferior "xpdf")) (map specification->package (list "foo" "bar" =E2=80=A6)))) --8<---------------cut here---------------end--------------->8--- where xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx is the last commit containing the version you like. Hope that helps, simon