| 23 Jan 2026 |
 niko ⚡️ | Does Lix expose any probes for profiling, especially when it comes to eval? | 11:51:38 |
 piegames | What do you mean with probes? If you want to profile your Nix code then it has performance counters you can print with some flags (IIRC), when it comes to profiling eval itself then perf and callgrind it is | 12:44:10 |
 thubrecht | NIX_SHOW_STATS=1 is the env variable that makes it print the counters | 12:54:39 |
|  nea joined the room. | 13:05:52 |
 raitobezarius | we have USDT probes for HTTP transfers | 15:24:01 |
| raitobezarius | i want to introduce more probes, like, significantly more | 15:24:09 |
| raitobezarius | so that it's possible to write an eBPF profiler based on them for eval | 15:24:18 |
| raitobezarius | but didn't have time | 15:24:26 |
| niko ⚡️ | In reply to @piegames:flausch.social
What do you mean with probes? If you want to profile your Nix code then it has performance counters you can print with some flags (IIRC), when it comes to profiling eval itself then perf and callgrind it is I mean not profiling the eval implementation itself but profiling nix code against the current eval implementation. But those answer my question, thank you, I’ll see if the counters are sufficient for what I want to look into. Worst case I’ll just wait with anticipation for raito to get back to introducing more probes | 15:54:23 |
| 13 May 2024 |
|  zrsk joined the room. | 13:37:30 |
|  dariof4 joined the room. | 14:16:05 |
|  abbe joined the room. | 14:42:22 |
 mjm | lix is now in nixos-unstable, what's the best way to use it in a NixOS config? | 15:47:41 |
 K900 | nix.package = pkgs.lix | 15:47:54 |
| K900 | Probably | 15:47:58 |
| K900 | Or just keep using the module | 15:48:02 |
 puck | you can use nix.package = pkgs.lix; if you want; but using the overlay will guarantee more updates (tho less binary cache) | 15:48:44 |
| mjm | well, the module/overlay doesn't easily support using the one from nixpkgs | 15:48:44 |
| mjm | i do want more binary cache | 15:49:21 |
| mjm | yeah i guess i'll just do nix.package then | 15:50:43 |
| raitobezarius | to have binary cache and HEAD, we will probably need to track the channels and bolt a lix on there and rebuild with our own CI then push in our binary cache | 17:33:17 |
 Charles | What's lix using as its binary cache? Attic? | 17:34:36 |
|  Arian left the room. | 17:37:44 |
 @tc424:glasgow.social | Last I heard they were using garage as the back end, and think about attic | 17:39:11 |
| @tc424:glasgow.social | I don't know if that means they're just pushing directly into garage's s3 interface for the moment | 17:39:36 |
| @tc424:glasgow.social | * Last I heard they were using garage as the back end, and thinking about attic | 17:39:57 |
| raitobezarius | In reply to @charles:computer.surgery
What's lix using as its binary cache? Attic? garage without attic | 17:41:16 |
| raitobezarius | it's homemade just nix push thingie | 17:41:24 |
| raitobezarius | and nix sign | 17:41:25 |
 Qyriad | yep | 17:44:26 |
