 | Nix Hackers | 904 Members |
| For people hacking on the Nix package manager itself | 189 Servers |
| Nix Hackers | 904 Members |
| For people hacking on the Nix package manager itself | 189 Servers |
| Sender | Message | Time |
|---|---|---|
| 11 Nov 2024 | ||
 Vladimír Čunát | I found this long-closed issue, but surely we don't have a very old Nix on Hydra builders: https://github.com/NixOS/nix/issues/6572 | 06:29:12 |
 Mic92 | vcunat: is it reproducible? | 09:01:03 |
| Vladimír Čunát | Two different machines did this on this particular derivation. | 09:01:27 |
| Vladimír Čunát | (same output, though as usual, on Hydra this got overwritten, but I remember) | 09:01:55 |
| Vladimír Čunát | Mic92: now I tried the same derivation on a machine outside NixOS infra and there this issue won't reproduce. Hard to guess what's the key difference, though. | 09:08:50 |
| Vladimír Čunát | * Mic92: now I tried the same-hashed derivation on a machine outside NixOS infra and there this issue won't reproduce. Hard to guess what's the key difference, though. | 09:09:12 |
 Martin Schwaighofer | In reply to @joerg:thalheim.ioIs the meeting link https://jitsi.lassul.us/nix-maintainers or something else? The link to the google calendar entry for the work meeting is a dead link. 😅 | 13:02:47 |
 gr_h_m joined the room. | 20:04:08 | |
| 12 Nov 2024 | ||
 John Ericson | In reply to @mschwaig:matrix.orgHi @mschwaig:matrix.org have you looked at CA derivations? From a lightening quick skim of your paper, sounds like we've had some similar ideas on how to retrofit the benefits of content addressed derivation outputs for input-addressed derivation outputs | 01:45:29 |
| John Ericson | I would be happy to talk to you about this more | 01:45:55 |
| Martin Schwaighofer | In reply to @Ericson2314:matrix.org Yes I have looked at CA derivations! 😊 I'd be interested in you ideas on this topic and how similarly/differently we see those things! If you're looking for specifics in the paper, I think besides T3/M3 the sections relevant to the content addressing vs input addressing issue are 6.3.2, the first half of 6.4.2, and 4.1.1. | 02:07:32 |
| Martin Schwaighofer | In reply to @Ericson2314:matrix.orgSounds great, let's do that. 😊 | 02:08:05 |
 pfhuh joined the room. | 05:53:47 | |
 jade_ | In reply to @vcunat:matrix.orgcan happen if the scheduler fucks up (we had this bug in lix HEAD recently because of a big scheduler refactor) | 09:47:49 |
| jade_ | also maybe a remote builds GC related bug | 09:48:02 |
| jade_ | since the remote build system does not keep paths live properly | 09:48:14 |
| jade_ | * since the remote build system does not keep paths live properly often | 09:48:16 |
| jade_ | https://git.lix.systems/lix-project/lix/issues/505 see | 09:50:48 |
 hexa | I did run a full GC in the mac builders last night | 09:52:12 |
| Mic92 | hexa: maybe we need to take out machines out of hydra when doing a GC. Machines are under load when this happen anyway. | 11:45:10 |
 p14 | I am having a problem with a http tarball URL used as a flake input somehow resulting in an incomplete unpack on disk. Are there known bugs in this area? Out of 70k files I am missing 1k in the unpack; these are present if I run ‘tar xf’ manually but not in the nix store for the flake input outPath. | 12:26:07 |
| p14 | It is repeatable in that the same problem seems to have occurred with two different tarballs | 12:51:32 |
 puck | are the files in the tarball ordered? | 15:04:05 |
 azahi changed their profile picture. | 18:51:18 | |
| jade_ | In reply to @joerg:thalheim.iounless the gc system was rewritten in cppnix, it is merely running one deleter thread and is not going to be loading the machine that hard | 22:03:56 |
| jade_ | but yes, probably would not be too absurd to take machines out while gc'ing them | 22:04:14 |
| hexa | yeah, it didn't seem to affect the mac much | 22:04:16 |
| hexa | and all other builders regularly run gcs as well | 22:04:51 |
| hexa | if this was a substantial problem we'd know | 22:05:07 |
| jade_ | i have a prototype for multithreaded gc deletion in lix, but i haven't finished it. it is an area where nix scales badly, anyhow. | 22:04:58 |