!VRULIdgoKmKPzJZzjj:nixos.org

Nix Hackers

847 Members
For people hacking on the Nix package manager itself182 Servers

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15 May 2025
@james.wilmot:matrix.orgJames Wilmot joined the room.01:27:33
@regalk:regalk.devregalk removed their profile picture.13:02:21
@joerg:thalheim.ioMic92 jade_: is the code that causes this bug shared between poll() and select()? 13:42:35
@mrtrk:matrix.orgMarco Turchetto joined the room.20:41:29
16 May 2025
@winter:catgirl.cloudWinter why does setting preferLocalBuild on a drv change its store path? i know it's because it leaks into env, but... why? 02:20:38
@winter:catgirl.cloudWinternvm i think i got it02:23:02
@kranzes:matrix.orgIlan Joselevich (Kranzes)Are you asking why it leaks into env then?07:35:27
@jade_:matrix.orgjade_ i don't know. but isn't select broken for having more than 1024 fds? i think also if you poll for readable events as eelco did in 2023ish, it probably does avoid the kernel shenanigans, but by the time i wrote the platform specific implementation i wanted off of macOS poll's wild ride 20:00:58
@jade_:matrix.orgjade_ there is also an undocumented kqueue API (used by netty) that only works for sockets and gives us exactly what we want, but it doesn't work on pipes, which we use for nix-daemon --stdio 20:01:52
17 May 2025
@mjolnir:nixos.orgmjolnir banned @mightyiam:matrix.org@mightyiam:matrix.org (persistent time-wasting).23:30:27
18 May 2025
@normalcea:matrix.orgjasi 🏳️‍⚧️ set a profile picture.00:08:54
@joerg:thalheim.ioMic92We only need two fds for the case you were trying to fix. And my hope is that using multiple fds in select() is so common that it just works even on macOS.14:57:10
@joerg:thalheim.ioMic92This would avoid platform specific code.14:57:29
@qyliss:fairydust.spaceAlyssa RossIt's not the number of fds that select is limited by — it's the fd numbers14:59:21
@qyliss:fairydust.spaceAlyssa Rosslike if you have two fds but both of them are high values that's not compatible with select14:59:39
@qyliss:fairydust.spaceAlyssa RossI have heard that select on macOS does work though14:59:49
@joerg:thalheim.ioMic92Ok. that makes it a non-starter for this api.14:59:59
19 May 2025
@orzklv:floss.uz@orzklv:floss.uz left the room.18:04:43
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