| 18 Feb 2026 |
 ris_ | that's interesting - https://hydra.nixos.org/build/319824740 - since 2026-01-22 we've always been able to find pacret instructions in our aarch64 binaries | 22:22:07 |
| ris_ | whether we've got the flag enabled or not | 22:22:30 |
| ris_ | and the weird thing is it's for both clang and gcc | 22:22:47 |
| ris_ | does this correspond to the gcc 15 switch? | 22:26:58 |
| 19 Feb 2026 |
| ris_ | on closer inspection it looks like paciaspis being added to just _init and _fini when "disabled" | 19:16:46 |
 emily | those are hand-written assembly, right? | 19:21:54 |
| ris_ | beyond my understanding | 19:33:47 |
| ris_ | my solution https://github.com/NixOS/nixpkgs/pull/492221 | 19:34:32 |
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| 6 Aug 2022 |
| Winter (she/her) | Does anyone know where the fact that the Darwin stdenv builds CMake twice comes from? As far as I can tell, it's from stage 0, and then just gets used in the other stages from there. Am I missing something here, is it something with the overrides? It looks like it might be, but then the fact that those are only allowed in the final stage (per booter.nix) (when that doesn't seem true, since then they wouldn't be defined...?) comes up.
(Isn't this the same pattern (defining in one stage and referencing in the others) that makes Glibc only build a limited number of times in the Linux stdenv?) | 08:00:17 |
 @trofi:matrix.org | You think cmake should be rebuild less? Or more?
glibc's is probably a bit different as it's a part of stdenv.cc.libc and mainly used by that I would guess. Also, if depends if the package is used or not by other packages in the derivation would affect rebuild count as well.
| 14:59:09 |
| @trofi:matrix.org | Looking at stdenv's dep tree I see 2 cmake-boot hashes and one cmake hash: https://dpaste.com/8GGM6P9BF.txt | 15:03:11 |
| Winter (she/her) | In reply to @trofi:matrix.org
You think cmake should be rebuild less? Or more?
glibc's is probably a bit different as it's a part of stdenv.cc.libc and mainly used by that I would guess. Also, if depends if the package is used or not by other packages in the derivation would affect rebuild count as well.
I have no particular opinion, I'm just curious how that happens. | 21:22:09 |
| Winter (she/her) | Oh, for clarification, I was talking about cmake-boot. | 21:22:19 |
| Winter (she/her) | (which is cmake in the stdenv stages) | 21:22:29 |
| Winter (she/her) | see the line i linked | 21:22:36 |
| @trofi:matrix.org | AFAIU cmake = cmakeMinimal is only for stage1-4 (first build: bootstrapTools -> cmake-boot in pastebin). Last stage uses cmake as is. Also note that cmakeMinimal is used by zstd (used by final stage, does second build: stage4 -> cmake-boot -> zstd in pastebin). | 21:44:31 |
| @trofi:matrix.org | I used the following command to grep through the full depgraph: $ nix-store --query --graph $(nix-instantiate -A stdenv --argstr system x86_64-darwin) | 21:45:39 |
