!VRULIdgoKmKPzJZzjj:nixos.org

Nix Hackers

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For people hacking on the Nix package manager itself191 Servers

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9 Sep 2025
@winter:catgirl.cloudWinter this is seemingly missing where commonPatches comes from fyi 02:21:31
@sandro:supersandro.deSandro 🐧 *

Also an example on how to add patches

    nixComponents_2_31 = (prev.nixComponents_2_31.overrideScope (finalScope: prevScope: {
      aws-sdk-cpp = null;
      boost = boost231;
      withAWS = false;
    })).appendPatches [
      ./nix-derivation-better-copy-2.30.diff
    ];
08:50:38
@sandro:supersandro.deSandro 🐧That's just a list I have somewhere above in a let in08:50:56
@aciceri:nixos.devaciceri changed their display name from zrsk to aciceri.15:02:57
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)Curiously, Boehm granule size on 64 bit systems is 16 bytes. That means that 16 byte atomics for Value are very workable, since x86_64 needs stuff to be 16 bytes aligned (otherwise memory might straddle the cache line and that won’t be atomic ever)17:31:17
10 Sep 2025
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11 Sep 2025
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12 Sep 2025
@getchoo:matrix.orggetchoo joined the room.00:07:47
@getchoo:matrix.orggetchoo hey Mic92: just came across your comment on the detnix installer thread. i'm not super familiar with the codebase just yet, but i have a good bit of experience with gha and ci janitor work, and would love to help out if i can! :) 00:16:11
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)Here are some notes from our meeting with the installer team. I forgor to publish them to discourse https://pad.lassul.us/KgpbqiQpQEOX2cKF5Ehjwg#00:24:04
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)Very incomplete and half-way00:24:49
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)But basically it'd be great to start integrating it into our dogfooding setup https://github.com/NixOS/nix/blob/master/.github/actions/install-nix-action/action.yaml00:25:28
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)PoC for 16 byte atomics on x86_64 for paralell eval: https://github.com/NixOS/nix/pull/13964. Lovers of compiler intrinsics are welcome01:07:35
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@thefossguy:matrix.orgPratham Patel joined the room.04:41:40
@getchoo:matrix.orggetchoo thanks for the link! i'll take a closer look at some of the stuff mentioned and what's already there this weekend hopefully (new job has had me a bit busy, catching covid from it didn't help either πŸ˜†), but i definitely think i can get this dogfooding setup going. i already have a bit of experience with very similar things in other action projects 05:01:36

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