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| 4 Feb 2025 |
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| pveierland | Are there any ways to check whether certain store paths are considered reproducible, without running the checks locally? | 05:02:16 |
| raboof | Not currently AFAIK | 07:55:02 |
| 6 Feb 2025 |
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 dish [Fox/It/She] | will there be updated builds of https://reproducible.nixos.org reports generated? Seems like the last ones were generated over a year or two ago at this point, would be good to see if they're substantially different from what's on the website | 20:16:35 |
| dish [Fox/It/She] | * will there be updated builds of the https://reproducible.nixos.org reports generated? Seems like the last ones were generated over a year or two ago at this point, would be good to see if they're substantially different from what's on the website | 20:16:43 |
| raboof | I agree that would be good! I've been focusing on https://github.com/JulienMalka/lila (which should replace those reports eventually) and some upstream work - but happy to take PRs? | 21:31:32 |
| dish [Fox/It/She] | I'll see if I can, yeah | 21:37:16 |
| dish [Fox/It/She] | running a build now(on my laptop 🥴) | 22:17:36 |
| 9 Feb 2025 |
| dish [Fox/It/She] | regenerated the minimal ISO reports(https://github.com/NixOS/reproducible.nixos.org/pull/7) | 15:59:41 |
| dish [Fox/It/She] | haven't regenerated the GNOME reports(idk if I will, the minimal ISO reports took like an entire day to generate) but these should be helpful | 16:00:25 |
| raboof | thanks, merged! | 21:49:01 |
|  @tired:fairydust.space left the room. | 22:50:19 |
| 10 Feb 2025 |
| raboof | created issues for the failures affecting the runtime closure of the minimal iso, https://github.com/NixOS/nixpkgs/issues/380852 https://github.com/NixOS/nixpkgs/issues/380854 and https://github.com/NixOS/nixpkgs/issues/380856 | 10:08:30 |
| 11 Feb 2025 |
| pveierland | Is reproducible compression a topic? Can any popular algorithms be configured to be reproducible? | 12:05:18 |
 @r522:matrix.org | there's discussion of this over at https://github.com/facebook/zstd/issues/2949 for zstd
zstd is deterministic... given the same version
which for the sake of reproducible builds isn't an issue, you can just use the older version
| 12:43:47 |
| pveierland | Interesting, thank you! | 12:46:01 |
| @r522:matrix.org | reproducible across all versions is quite a niche requirement, especially since that means you can't ever make the compression more efficient space-wise
for that i guess you'd just pick a given zstd(or other library) version and fork it, applying changes as needed, but having tests that ensure you never break reproducability
| 12:47:57 |
| pveierland | It does sound a bit fickle. Seems like a case similar to e.g. the NAR format where it would make sense to make a dedicated reproducible compression format (even if it's just a fork of an existing algorithm with frozen parameters) | 12:50:09 |
| pveierland | Good to know that it should be possible out-of-the box with zstd 👍️ | 12:50:34 |
