GNU bug report logs - #63634
nar 404 leads to hard ‘guix substitute’ crash

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Message #22 received at 63634 <at> debbugs.gnu.org (full text, mbox):

From: Christopher Baines <mail <at> cbaines.net>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 63634 <at> debbugs.gnu.org
Subject: Re: bug#63634: nar 404 leads to hard ‘guix substitute’ crash
Date: Mon, 22 May 2023 11:59:28 +0100

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Ludovic Courtès <ludo <at> gnu.org> writes:

> So it seems ‘guix substitute’ picked /nar/zstd, even though
> bordeaux.guix is not advertising that.
>
> Or is it?
>
> $ sudo cat /var/guix/substitute/cache/kzwjeblndsbkjzmjailrt4bnhguil7tqjmewzcyw22hgajbhfy3q/apw1y9nf8rqgxvjnlr1isbhpd502bcs5
> (narinfo (version 2) (cache-uri "https://bordeaux.guix.gnu.org") (date 1683633757) (ttl 15552000) (value "StorePath: /gnu/store/apw1y9nf8rqgxvjnlr1isbhpd502bcs5-gcc-cross-aarch64-linux-gnu-11.3.0\nNarHash: sha256:1am3v254jr9dpgd9r4dkjqxfgbp1xm0vl1hxl49cmmh97dg117z8\nNarSize: 144790464\nReferences: 8rz7yh6zdzp4b78f4n9wqj3hav2md4d4-isl-0.24 930nwsiysdvy2x5zv1sf6v7ym75z8ayk-gcc-11.3.0-lib apw1y9nf8rqgxvjnlr1isbhpd502bcs5-gcc-cross-aarch64-linux-gnu-11.3.0 brzrf6qx5d83j1zvirc1xk14wrhyx4hf-binutils-cross-aarch64-linux-gnu-2.38 cinj0g8krh5s428jawsazawlfarp912k-gcc-cross-aarch64-linux-gnu-11.3.0-lib cs3hw1wnxgijjzsd61whc8ar3qy9wjd6-mpfr-4.2.0 gsjczqir1wbz8p770zndrpw4rnppmxi3-glibc-2.35 ib2n2vzqpchc3bhh9i712w5sq9zapn8d-gmp-6.2.1 rbjq50q2ik8c1glkj5f0ksnwfz64g16g-mpc-1.3.1 rib9g2ig1xf3kclyl076w28parmncg4k-bash-minimal-5.1.16 rjgpaj54q1q9n3hcvpzyp29fgi2nx6ls-ld-wrapper-aarch64-linux-gnu-0 slzq3zqwj75lbrg4ly51hfhbv2vhryv5-zlib-1.2.13 y4ndp9n5krkaiwgvw58c61n7h8ls9b0f-glibc-cross-aarch64-linux-gnu-2.35\nSystem: x86_64-linux\nDeriver: fqb09jygm70cmq03xmjm7al6gzajp1p5-gcc-cross-aarch64-linux-gnu-11.3.0.drv\nSignature: 1;bayfront;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\nURL: nar/lzip/apw1y9nf8rqgxvjnlr1isbhpd502bcs5-gcc-cross-aarch64-linux-gnu-11.3.0\nCompression: lzip\nFileSize: 24767829\nURL: nar/zstd/apw1y9nf8rqgxvjnlr1isbhpd502bcs5-gcc-cross-aarch64-linux-gnu-11.3.0\nCompression: zstd\nFileSize: 39822104"))ludo <at> ribbon ~/src/guix [env]$
>
> So it seems that bordeaux.guix did advertise zstd at some point (and
> that narinfo is still in cache) but no longer does.
>
> Chris, can you confirm?

Yeah, this would have been a consequence of reducing the cache size [1].

1: https://git.savannah.gnu.org/cgit/guix/maintenance.git/commit/?id=ce8d3000fda6b80c0cf3e6f8204e0ee293024e6b

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