| 27 Nov 2025 |
 flokli | In nar-bridge, we emit a path that encodes the castore root node as the path to the NAR, giving a subtle cue to a more castore-aware substituter, who can then potentially skip downloading most of the file entirely: https://git.snix.dev/snix/snix/src/commit/9c023a073e1b7298d322c26331331ccf5249cf0f/web/content/docs/components/store/snix_flavoured_binary_cache_protocol.md | 10:42:05 |
| flokli | (and use content-encoding to emit a zstd-compressed version, if someone wants the entire NAR) | 10:42:34 |
 edef | It would bump S3 bandwidth a bit, we'd have to do the math | 10:56:02 |
 hexa (signing key rotation when) | rebooting mimas/haumea for 25.11 update | 14:32:25 |
| hexa (signing key rotation when) | looks like everything went fine and builds are ramping up again | 14:41:18 |
 Mic92 | https://meet.cccda.de/nix-osin-fra vcunat Arian Jeremy Fleischman (jfly) | 17:01:44 |
 vcunat | So just me and Mic92, basically nothing to discuss. | 17:27:34 |
| 28 Nov 2025 |
 aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | Hi, I was wondering if we could use a script to upload all the logs of Hydra's failing jobs to one location, or do we have such a service now? | 06:28:31 |
 K900 | The location is cache.nixos.org | 06:33:20 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | In reply to @k900:0upti.me
The location is cache.nixos.org But how do I only fetch failed logs? | 06:35:37 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | I guess I have to write a script myself | 06:35:45 |
| K900 | You'd have to pull the drv paths from an eval | 06:35:49 |
| K900 | It's not quite trivial | 06:35:57 |
| K900 | What are you actually trying to do? | 06:36:03 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | In reply to @k900:0upti.me
What are you actually trying to do? See if it's possible to fix common build issues treewide | 06:36:50 |
| K900 | I think Grimmauld was working on something like that | 06:38:09 |
| vcunat | Getting list of .drv shouldn't be that hard. If this way didn't work out, I'd recommend trying to start from nixpkgs' maintainers/scripts/rebuild-amount.sh | 07:16:03 |
| vcunat | (there are other places for sure which try to do something with all packages) | 07:16:46 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | Okay I'm writing it | 07:43:53 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | But how do I get the password of my hydra account if I've logged in with GitHub | 07:44:16 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | Seems like https://hydra.nixos.org/eval/1820524/builds doesn't respond unless I log in | 07:44:40 |
| vcunat | Why do you need that? | 08:32:46 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | In reply to @vcunat:matrix.org
Why do you need that? I want to query builds -> get drv paths of failed builds -> download log from cache.nixos.org | 08:47:10 |
| vcunat | You can view the logs e.g. via nix-store -l /nix/store/foo.drv | 08:47:42 |
| vcunat | Or construct the URL manually. It's trivial. | 08:47:58 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | Yeah, the last part is trivial, and I have implemented it | 08:48:14 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | Now the problem is hydra API doesn't respond so I can't get the list of failed derivations | 08:48:38 |
| vcunat | Ah, failed derivations? 🤔 | 08:49:00 |
| vcunat | Via non-presence of substitutes? | 08:49:44 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | In reply to @vcunat:matrix.org
Via non-presence of substitutes? That requires evaluating Nixpkgs | 08:50:30 |
