| 10 Aug 2022 |
|  luxus joined the room. | 09:55:36 |
| 17 Aug 2022 |
 @trofi:matrix.org | Quiz question: for a final glibc used in nixpkgs all over the place which gcc you think is used to build it on linux? a) Possible answers: gcc from bootstrap tools b) gcc from nixpkgs. | 17:36:21 |
| @trofi:matrix.org | You knew :) | 17:39:09 |
 Artturin | obviously it is the more ridiculous answer 🙃 | 17:40:03 |
| @trofi:matrix.org | Yeah :) Spoiler: https://dpaste.com/DMD34BUN9.txt | 17:40:23 |
| @trofi:matrix.org | * Quiz question: for a final glibc used in nixpkgs all over the place which gcc you think is used to build it on linux? Possible answers: a) gcc from bootstrap tools b) gcc from nixpkgs. | 17:42:06 |
 vcunat | AFAIK it isn't easy to do better. gcc links against glibc. So either somehow try replacing it later (rather hacky, probably) or build gcc twice during bootstrapping (will remain persistently annoying). Or as you suggest, update the bootstrapping tools more often. | 17:49:27 |
| vcunat | I might've missed some options. Or perhaps even confuse something. | 17:49:48 |
| vcunat | * I might've missed some options. Or perhaps even confused something. | 17:49:52 |
| vcunat | * AFAIK it isn't easy to do better. gcc links against glibc. So either somehow try replacing gcc's glibc later (rather hacky, probably) or build gcc twice during bootstrapping (will remain persistently annoying). Or as you suggest, update the bootstrapping tools more often. | 17:50:20 |
| @trofi:matrix.org | [The other day I found stdenv.__bootPackages as a way to refer to each stage's package set. Now I use it and nix-store --query --graph all the time to find out what gets built when and why.]
nod. Your description matches my understanding. Today we build glibc and gcc once during bootstrap (and 3 times binutils?). In this setup at least one of them will have to be built by bootstrapTools.
| 17:58:53 |
 @rick:matrix.ciphernetics.nl | This maybe: https://github.com/NixOS/nixpkgs/pull/132343 | 17:58:54 |
| @trofi:matrix.org | AFAIU splitting libraries out does not fully solve the reliance on code generated directly by bootstrapTools toolchain. glibc would still have to be rebuilt once again. But the split might ease adding extra lightweight stages to rebuild some parts of stdenv. I dread of the thought maintaining such patches downstream though :) | 18:06:57 |
|  greaka joined the room. | 20:21:08 |
| 20 Aug 2022 |
|  kayla (she/they) joined the room. | 17:25:29 |
| 21 Aug 2022 |
| greaka changed their display name from greaka ⚡️ to greaka . | 09:25:58 |
| 24 Aug 2022 |
 hexa | John Ericson: can I have your opinion on this diff (staging-next -> staging)
diff --cc pkgs/development/compilers/llvm/git/libcxxabi/default.nix
index 441aba65166,2d4fe974c01..00000000000
--- a/pkgs/development/compilers/llvm/git/libcxxabi/default.nix
+++ b/pkgs/development/compilers/llvm/git/libcxxabi/default.nix
@@@ -61,7 -80,7 +80,11 @@@ stdenv.mkDerivation rec
postInstall = ''
mkdir -p "$dev/include"
++<<<<<<< HEAD
+ install -m 644 ../include/${if stdenv.isDarwin then "*" else "cxxabi.h"} "$dev/include"
++=======
+ install -m 644 ../../${pname}/include/${if stdenv.isDarwin then "*" else "cxxabi.h"} "$dev/include"
++>>>>>>> origin/staging-next
'';
meta = llvm_meta // {
| 22:16:01 |
| hexa | moved into #staging:nixos.org 🙂 | 22:17:11 |
|  underpantsgnome changed their display name from tinybronca to underpantsgnome. | 23:00:14 |
| 26 Aug 2022 |
|  pennae joined the room. | 13:45:35 |
| pennae | currently playing around with a mkDerivation' :: (Attrs -> Attrs) -> Attrs -> Drv. could be useful to solve eg the rust overrideAttrs problem (where rust would use mkDerivation' to do rust-specific processing to the args before passing them on, and regular mkDerivation would just pass id). is this something? is there something other than stdenv adapters that could turn into a problem? | 13:48:02 |
| pennae | this hinges on overlayable mkDerivation, so the signature should really be mkDerivation' :: (Attrs -> Attrs) -> (Either Attrs (Attrs -> Attrs)) -> Drv i guess 🤔 | 13:50:42 |
| Artturin | In reply to @pennae:matrix.eno.space
currently playing around with a mkDerivation' :: (Attrs -> Attrs) -> Attrs -> Drv. could be useful to solve eg the rust overrideAttrs problem (where rust would use mkDerivation' to do rust-specific processing to the args before passing them on, and regular mkDerivation would just pass id). is this something? is there something other than stdenv adapters that could turn into a problem? I have rust overriding working in https://github.com/NixOS/nixpkgs/pull/179392 | 16:04:34 |
| pennae | okay, let's use that :) | 16:23:22 |
| 30 Aug 2022 |
|  aru joined the room. | 14:41:45 |
| aru left the room. | 15:54:41 |
| 7 Sep 2022 |
 Winter (she/her) | what part of stdenv actually adds libraries to ldflags? i see where binaries are added to path and rpath is set, but not libraries... am i missing something obvious here? | 07:23:29 |
| vcunat | bintoolsWrapper_addLDVars I think. | 07:30:19 |
| Winter (she/her) | ahhh, i was thinking it would be in a different setup hook like that, no clue why grepping around wasn't helping there | 07:43:12 |
| Winter (she/her) | thanks, i think you're right | 07:43:20 |
