| 29 Jul 2025 |
 John Ericson | OK! | 20:40:17 |
| John Ericson | Sergei Zimmerman (xokdvium): I wonder if I should use mutable since it is morally pure | 20:41:03 |
| John Ericson | not good for concurrency const | 20:41:13 |
 Mic92 | In reply to @Ericson2314:matrix.org
Mic92: any idea where we would get a nice meaty real-world structured attrs derivation? Anything in stdenv has to be parsed/generated multiple times. Bootstrapping in general takes most of the time in any eval flamegraph I have seen so far. | 20:41:19 |
| John Ericson | but is good for "are we changing it?" const | 20:41:21 |
| Mic92 | So this Code makes parsing 4x slower? https://github.com/NixOS/nix/commit/7f0ff4957e634de8aa2edb3cac5e79375c605148 | 20:46:04 |
| Mic92 | Surprising because the throughput of our current parser is slower than what I expect a JSON parser to be able to pull off. | 20:47:48 |
| Mic92 | * Surprising because the throughput of our current derivation parser is slower than what I expect a JSON parser to be able to pull off. | 20:48:04 |
| John Ericson | Mic92: oh wait tbh I was doing unoptimized builds | 20:51:13 |
| John Ericson | that doesn't mean much | 20:51:19 |
| John Ericson | I opened up https://github.com/NixOS/nix/issues/13573 regardless | 20:57:19 |
