| 27 Jun 2025 |
 emily | (and nix develop uses a /var/folders path even with temp-dir set so it doesn't actually help nix develop) | 10:43:53 |
| emily | in any case, you do have to explicitly set use-case-hack, since it conditions only on platform. also maybe this should be #macos:nixos.org :) | 10:44:27 |
|  nbp changed their display name from nbp to nbp — PTO. | 17:26:30 |
 aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | Redacted or Malformed Event | 18:18:47 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | https://github.com/NixOS/nixpkgs/issues/420513 | 18:19:00 |
| emily | pretty non actionable until we can get a bisection going on an affected machine | 18:21:11 |
| emily | since I'm assuming it does not reproduce on Hydra or the community builders? | 18:21:26 |
| emily | ideally someone experiencing it will give SSH access to someone with experience bisecting staging | 18:21:58 |
| emily | was the GCC minor bump that cycle? | 18:22:52 |
| emily | would be pretty funny if GCC 14 betrayed us again | 18:23:01 |
 Tristan Ross | There is a GCC bump | 18:23:23 |
| Tristan Ross | I have a Threadripper Pro 7995wx available currently, I have plenty of compute to (hopefully) bisect this. If someone provides a very reproducible runner, I can give it a try. Currently, the machine runs 25.05 and its fine. | 18:24:29 |
| Tristan Ross | There's also an LLVM bump in that cycle | 18:25:19 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | In reply to @rosscomputerguy:matrix.org
There's also an LLVM bump in that cycle llvm is probably unrelated as nix has a problem too, and it's not involving aws-sdk-cpp | 18:28:09 |
| Tristan Ross | Yeah, I was thinking about that as well after I mentioned it | 18:28:49 |
| Tristan Ross | I saw there's some cc-wrapper changes but they look harmless enough, it probably is GCC like emily mentioned. | 18:29:20 |
 sielicki | stupid question: is there a reason that stdenvNoCC.fetchurl cannot assume builtins.fetchurl here? | 19:44:01 |
| emily | I believe https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-support/fetchurl/boot.nix is used for the boostrap | 19:45:37 |
| sielicki | nix-repl> :e <nix/fetchurl.nix>
error: cannot open '<nix/fetchurl.nix>' in an editor because it has no physical path
i do not understand what this is
| 19:50:16 |
| sielicki | is <nix/*> special? | 19:50:43 |
| emily | yes, it's magic builtin stuff | 19:51:13 |
| emily | I think builtins.fetchurl is a wrapper around it or something (probably newer than <nix/fetchurl.nix>?) | 19:51:23 |
| emily | or vice versa | 19:51:24 |
| sielicki | nix-repl> builtins.findFile builtins.nixPath "nix/fetchurl.nix"
<nix/fetchurl.nix>
turtles all the way down
| 19:51:40 |
| sielicki | okay, yes, it's right in the root of libexpr | 19:52:25 |
| emily | actually I think the difference is that <nix/fetchurl.nix> produces an actual FOD | 19:52:41 |
| emily | whereas builtins.fetchurl is a bulitin fetcher that runs at eval time | 19:52:48 |
| emily | but don't quote me on that | 19:52:49 |
| sielicki | it's a shame that this is so difficult to touch without catastrophic levels of rebuilds | 20:00:24 |
| emily | you can override stdenv for individual packages though of course for bootstrap that does not help | 20:01:38 |
