| 26 Feb 2026 |
|  @chrisoboe:one.ems.host removed their display name ChrisOboe. | 20:15:29 |
| @chrisoboe:one.ems.host left the room. | 20:16:06 |
 Sergei Zimmerman (xokdvium) | Eelco: debugged the i686-linux failures in hydra. Turns out we had a buggy unsigned promotion this whole time if time_t is 32 bit (which it apparently still is on i686?)
https://github.com/NixOS/nix/pull/15356
| 20:59:03 |
| Sergei Zimmerman (xokdvium) | I recall there was a push to switch to 64 bit everywhere but I can't find the nixpkgs issue now | 20:59:41 |
| 27 Feb 2026 |
|  amadaluzia changed their profile picture. | 03:55:36 |
|  devi0usm0nk joined the room. | 17:14:11 |
| devi0usm0nk changed their display name from devi0us.m0nk to devi0usm0nk. | 18:29:20 |
 jaen | Playing around with dynamic derivations and the following:
builtins.outputOf (builtins.outputOf plannerDrv.outPath "out") "out"
nets me an error like this:
error: error parsing derivation '/nix/store/…-group-0': store path '…-group-0' is not a valid derivation path
This an attempt at multi-level CA-guarded rebuild chunking — the planner creates the build graph (in this case, from ninja files), the intermediate builder (or builders depending on what makes more sense there can be > 1 level of chunks) that eventually emits a directory with build outputs. And I'm not entirely sure if it's me who is doing something wrong and this is intended not to work, or whether this is some implementation oversight and/or current limitation?
| 18:31:13 |
| jaen | Now that I think about it, it's probably what https://github.com/NixOS/nix/issues/12727 is talking about, in which case I'm wondering how hard would it be to fix? I seem to have hacked this out by just checking if this parses as a derivation or not to decide whether we arrived at the leaf, but looking at the issue I assume that's not probably a principled enough solution? | 18:31:16 |
| Sergei Zimmerman (xokdvium) | 2.32 bump in 25.11 https://github.com/NixOS/nixpkgs/pull/494829 | 22:36:42 |
| Sergei Zimmerman (xokdvium) | Jens Petersen: Artemis Tosini (NixOS) and John Ericson have put significant effort into getting multiuser installs working working without requiring root for 2.34. It works by running the daemon in an unprivilidged userns with subuid/subgid mappings for build users. Would that be something that fedora packaging would be interested in? | 22:43:49 |
| Sergei Zimmerman (xokdvium) | Might still be rough around the edges, but our test suite passes with that setup in nixos tests https://github.com/NixOS/nix/blob/master/tests/nixos/functional/unprivileged-daemon.nix | 22:48:19 |
| 28 Feb 2026 |
|  Bogdan Burlacu joined the room. | 06:44:11 |
 Jens Petersen | Sergei Zimmerman (xokdvium): Oh wow, fascinating, for sure! I probably need to start looking at build 2.33 - needs aws-crt-cpp I think | 12:04:30 |
| Jens Petersen | Will have to give it a try | 12:05:53 |
| Jens Petersen | * Sergei Zimmerman (xokdvium): Oh wow, fascinating, for sure! I probably need to start looking at building 2.33 - needs aws-crt-cpp I think | 12:06:07 |
| Sergei Zimmerman (xokdvium) | Should be easier than aws-sdk-cpp, aws-crt-cpp is much lighter weight dep and should already be included in the aws-sdk | 12:06:53 |
| Jens Petersen | Okay - we don't have aws-sdk in fedora 🙃 | 12:09:32 |
| Jens Petersen | * Okay - we don't have aws-sdk in fedora 🙃 afaik | 12:09:42 |
| Jens Petersen | Anyway first I should probably build 2.32.6 :-) | 12:10:03 |
| Jens Petersen | Seems a rather long list of deps - wish they would bootstrap aws-crt-cpp... 😿 | 12:51:08 |
| Sergei Zimmerman (xokdvium) | FWIW s3 dep is optional - only needed for sigv4 auth | 12:56:38 |
 Sandro 🐧 | Or ignore it for now, it's not that important for the start | 12:56:53 |
| Sergei Zimmerman (xokdvium) | If you were not building 2.31 with aws-sdk then crt-cpp is not necessary too | 12:58:27 |
| Jens Petersen | Sergei Zimmerman (xokdvium): ah okay - it is optional - let me check how to turn it off if needed, thanks | 13:19:01 |
| Jens Petersen | * Sergei Zimmerman (xokdvium): ah okay - is it optional - let me check how to turn it off if needed, thanks | 13:19:10 |
| Sergei Zimmerman (xokdvium) | I think we have it set up as meson feature that gets auto disabled if the dep isn’t found | 13:19:55 |
| Sergei Zimmerman (xokdvium) | libstore:aws-s3-auth or something | 13:20:31 |
| Jens Petersen | Okay cool got past that, now at jv | 13:31:43 |
| Jens Petersen | * Okay cool got past that, now at jv
edit: okay I turned off two checks and now seems to be building | 17:09:16 |
