| 28 Apr 2025 |
|  @pablo:taktpraha.cz left the room. | 00:50:30 |
|  Anthony Oleinik joined the room. | 05:37:37 |
|  mgrrx joined the room. | 21:42:02 |
| 29 Apr 2025 |
 @trofi:matrix.org | Did you notice nix eats compiler options in warning messages as printed by gcc-14? I think I have a fix: https://github.com/NixOS/nix/pull/13109 | 14:56:04 |
| 30 Apr 2025 |
 dramforever | oh i did notice but didn't figure out what's going on! thank you | 01:33:35 |
|  vimfn joined the room. | 03:21:08 |
| vimfn changed their profile picture. | 04:42:37 |
| mgrrx changed their display name from Markus Grimm to mgrrx. | 05:22:58 |
| 1 May 2025 |
|  rosariopulella changed their display name from Rosario Pulella to Rosuavio. | 20:08:09 |
|  mnaser joined the room. | 20:12:44 |
|  Sol joined the room. | 21:21:27 |
|  oak 🏳️🌈♥️ changed their display name from oak - mikatammi.fi to oak 🫱⭕🫲. | 23:18:30 |
 Sergei Zimmerman (xokdvium) | Some effortless frontend lexer performance improvements (2 line diff). Pretty negligible compared to eval/gc, but still very much measurable and I'd expect it to stack up quite a bit.
https://github.com/NixOS/nix/pull/13126 | 23:20:05 |
| 2 May 2025 |
|  zmitchell joined the room. | 20:16:07 |
| zmitchell | Hey all, I'm working on a bug I encountered related to a race condition between GC processes, but I'm a little stuck on a C++ thing (not my forte). All links will be to 2.24.12 since that's what I'm on at the moment, but I suspect the error is still present in recent versions.
If the GC socket is disconnected, you get errno = 32 here, and you throw SysError: https://github.com/NixOS/nix/blob/f22359ba1af6d976d248318aa14e6a6326682f5c/src/libutil/unix/file-descriptor.cc#L43
So, you would expect that to get caught in addTempRoot here: https://github.com/NixOS/nix/blob/f22359ba1af6d976d248318aa14e6a6326682f5c/src/libstore/gc.cc#L135
However, if I put some debug("I'm here")-style comments in that catch block, I don't see the exception caught. I know that the exception is being throw in writeFull because I can put a try-catch block around the body, catch the SysError, throw a std::exception instead, and catch that at this location in addTempRoot. It seems like "throw SysError here, catch SysError there" should be pretty straightforward, but it's not working, and I'm out of my C++-depth if there are any nuances involved.
| 20:22:37 |
| zmitchell | I worked on this with Tom yesterday, and I'm planning to put together a PR once I know why this exception isn't being caught. | 20:25:06 |
| 3 May 2025 |
 tomberek | Perhaps related to SysError being templated? | 18:42:16 |
 hexa | https://hydra.nixos.org/build/296021551 | 21:36:42 |
| hexa | i686-gnu.nix.x86_64-linux is still allocating a build slot for 3 days | 21:37:06 |
| hexa | wondering if anyone feels responsible for that package | 21:37:22 |
| hexa |
:: (nixbld13) →
UID PID PPID STIME TIME COMMAND
30013 978082 977874 Apr30 00:00:00 bash -e /nix/store/vj1c3wf9c11a0qs6p3ymfvrnsdgsdcbq-source-stdenv.sh /nix/store/shkw4qm9qcw5sc5n1k5jznc83ny02r39-default-builder.sh
30013 2051738 978082 Apr30 00:01:09 /nix/store/fqm9bqqlmaqqr02qbalm1bazp810qfiw-python3-3.12.9/bin/python3.12 /nix/store/jvcm0xph04gl36xmwclfkg26736javak-meson-1.7.0/bin/meson test --no-rebuild --p
30013 2051835 2051738 Apr30 00:00:00 /nix/store/9nw8b61s8lfdn8fkabxhbz0s775gjhbr-bash-5.2p37/bin/bash -x -e -u -o pipefail gc-auto.sh
30013 2054090 978082 Apr30 00:00:00 /nix/store/9nw8b61s8lfdn8fkabxhbz0s775gjhbr-bash-5.2p37/bin/bash -x -e -u -o pipefail gc-non-blocking.sh
30013 2054096 2054090 Apr30 00:00:00 nix-store --gc -vvvvv
| 21:53:03 |
| hexa | * :: (nixbld13) →
UID PID PPID STIME TIME COMMAND
30013 978082 977874 Apr30 00:00:00 bash -e /nix/store/vj1c3wf9c11a0qs6p3ymfvrnsdgsdcbq-source-stdenv.sh /nix/store/shkw4qm9qcw5sc5n1k5jznc83ny02r39-default-builder.sh
30013 2051738 978082 Apr30 00:01:09 /nix/store/fqm9bqqlmaqqr02qbalm1bazp810qfiw-python3-3.12.9/bin/python3.12 /nix/store/jvcm0xph04gl36xmwclfkg26736javak-meson-1.7.0/bin/meson test --no-rebuild --p
30013 2051835 2051738 Apr30 00:00:00 /nix/store/9nw8b61s8lfdn8fkabxhbz0s775gjhbr-bash-5.2p37/bin/bash -x -e -u -o pipefail gc-auto.sh
30013 2054090 978082 Apr30 00:00:00 /nix/store/9nw8b61s8lfdn8fkabxhbz0s775gjhbr-bash-5.2p37/bin/bash -x -e -u -o pipefail gc-non-blocking.sh
30013 2054096 2054090 Apr30 00:00:00 nix-store --gc -vvvvv
| 21:53:07 |
|  Jeremy Fleischman (jfly) joined the room. | 22:20:35 |
| 4 May 2025 |
| tomberek | @hex... testing with a Nixpkgs for now (i'm getting the 403 on Hydra: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36) | 00:29:45 |
| tomberek | * hexa: ... testing with a Nixpkgs for now (i'm getting the 403 on Hydra: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36) | 00:29:54 |
| hexa | sorry, but I had to ban older chromium versions due to abuse | 00:30:51 |
| hexa | we have 136 on master | 00:31:12 |
| hexa | but 135 is also allowed | 00:31:15 |
| tomberek | got it... I guess i'm due to upgrade | 00:31:28 |
| hexa | bots are basically enumerating all kinds of software versions, so I'm only allowing recent ones | 00:31:33 |
