| 21 Nov 2025 |
 helle (just a stray cat girl) | it's the binary cache that is failing | 13:27:30 |
 522 it/its ⛯ΘΔ | ah, right, yeah | 13:27:38 |
| 522 it/its ⛯ΘΔ | disabling http2 in nix.conf doesn't work? | 13:28:24 |
| 522 it/its ⛯ΘΔ | (or using the flag) | 13:28:32 |
| helle (just a stray cat girl) | nope, does not seem to work, huh | 13:35:17 |
| helle (just a stray cat girl) | well, this is making updating this system a tad challenging | 14:05:28 |
 Rutile (Commentator2.0) feel free to ping | substitutors=? | 14:08:22 |
| helle (just a stray cat girl) | yeah, I am actually grabbing a copy now with some effort and going to throw that in a local one | 14:08:45 |
 hexa | --http3? 😄 | 14:18:34 |
 raitobezarius | normally, --no-http2 should be effective except if your deployment tool just silently ignores nix options | 14:46:10 |
| raitobezarius | (or i just redo the upgrade until it passes) | 14:46:20 |
| helle (just a stray cat girl) | eeeh, ended up with substitue = false and prefetching the one file I needed that was failing with curl and a local nixpkgs pointed at that (trying to find the cache entry for it I was not in the mood for) | 15:02:12 |
 John Ericson | I did that too | 17:10:17 |
| John Ericson | split libcmd into store layer and not store layer parts | 17:10:40 |
|  isabel changed their profile picture. | 18:13:57 |
| Rutile (Commentator2.0) feel free to ping | https://gerrit.lix.systems/c/lix/+/4605
its merged 🎉
| 18:34:13 |
| raitobezarius | I looked and I may have missed it but I still see special cases in libcmd on master. | 18:41:27 |
|  mzero joined the room. | 20:37:43 |
| mzero | did the special casing for small lists get removed? there are still comments that refer to it, but I'm not seeing it in the code (though I could just be missing it) | 20:54:15 |
| raitobezarius | removed, indeed | 20:54:40 |
| raitobezarius | did you notice something problematic for small lists? | 20:54:48 |
| mzero | no, I was just looking at the string changes in the release notes and noticed it. is there any perforce impact from it? I assume lists with exactly 2 elems aren't that common, but I'm still curious. | 20:59:59 |
| raitobezarius | AFAIK, this optimization is noise when we looked | 21:07:47 |
| raitobezarius | Lists with 2 elems are usually pairs in Nixlang | 21:07:58 |
| raitobezarius | Unnamed pairs | 21:08:07 |
 Sergei Zimmerman (xokdvium) | I did research a bit the distribution of list sizes when evaling nixpkgs. Small lists are quite often used, but lists just pale in comparison with attrsets overall | 21:17:12 |
| mzero | name value pairs are so common because of listToAttrs, etc, I wonder if a pair type would actually make a significant perf difference | 21:19:00 |
| Sergei Zimmerman (xokdvium) | A more generic approach could be to have "attrset shapes". Very similar to how v8 optimizes classes with the same layout | 21:20:09 |
| Sergei Zimmerman (xokdvium) | Then names wouldn't need to be stored in the attribute set and function calls could reuse the same memory and not copy anything to a new Env.
(I and Robert Hensing discussed this a bit at some point) | 21:21:57 |
 Qyriad | In reply to @xokdvium:matrix.org
A more generic approach could be to have "attrset shapes". Very similar to how v8 optimizes classes with the same layout benefits of a JIT especially | 21:22:04 |
