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Nix Hackers

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For people hacking on the Nix package manager itself194 Servers

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30 Mar 2026
@coltonzg:matrix.org@coltonzg:matrix.org joined the room.02:56:13
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@eveeifyeve:matrix.orgeveeifyeve Eelco: It's really interesting looking through the movement on NaN canonicalization wasm issue, I am not too exactly some user choose to make it required and some don't. It might be a good to get some idea from the wasm developers (if it's not required, The question is what is it's use.). 13:14:56
@eveeifyeve:matrix.orgeveeifyeve * Eelco: It's really interesting looking through the movement on NaN canonicalization wasm issue for builtins.wasm pr, I am not too exactly some user choose to make it required and some don't. It might be a good to get some idea from the wasm developers (if it's not required, The question is what is it's use.). 13:15:18
@eveeifyeve:matrix.orgeveeifyeve * Eelco: It's really interesting looking through the movement on NaN canonicalization wasm issue for builtins.wasm pr, I am not too exactly some runtimes choose to make it required and some don't. It might be a good to get some idea from the wasm developers (if it's not required, The question is what is it's use.). 13:15:34
@eveeifyeve:matrix.orgeveeifyeve * Eelco: It's really interesting looking through the movement on NaN canonicalization wasm issue for builtins.wasm pr, I am not too exactly some runtimes choose to make it required and some don't from what I was reading. It might be a good to get some idea from the wasm developers (if it's not required, The question is what is it's use.). 13:15:50
@eveeifyeve:matrix.orgeveeifyeve * Eelco: It's really interesting looking through the movement on NaN canonicalization wasm issue for builtins.wasm pr, I am not too exactly some runtimes choose to make it required and some don't from what I was reading. It might be a good to get some idea from the wasm developers (if it's not required, The question is what is it's use when some languages like nix don't deal with floating points often.). 13:17:25
@eveeifyeve:matrix.orgeveeifyeve * Eelco: It's really interesting looking through the movement on NaN canonicalization wasm issue for builtins.wasm pr, I am not too exactly some runtimes choose to make it required and some don't from what I was reading. It might be a good to get some idea from the wasm developers (if it's not required, The question is what is it's use when some languages like nix don't deal with floating points often). 13:17:28
@eveeifyeve:matrix.orgeveeifyeve * Eelco: It's really interesting looking through the movement on NaN canonicalization wasm issue for builtins.wasm pr, I am not too exactly some runtimes choose to make it required and some don't from what I was reading. It might be a good to get some idea from the wasm developers, if it's not required, The question is what is it's use when some languages like nix don't deal with floating points often? 13:17:41
@eveeifyeve:matrix.orgeveeifyeve * Eelco: It's really interesting looking through the movement on NaN canonicalization wasm issue for builtins.wasm pr, I am not too exactly some runtimes choose to make it required and some don't from what I was reading. It might be a good to get some idea from the wasm developers, if it's not required, The question is what is it's use when some languages like nix don't deal with floating points often? Like are we expected to handle or ignore these? 13:18:17
31 Mar 2026
@pleune:matrix.orgPleune changed their display name from mitchpleune to Pleune.02:01:16
@vcunat:matrix.orgVladimír Čunát I noticed when looking around Hydra that now tests.nix-copy very often fails, even on multiple older Nix branches, e.g. https://hydra.nixos.org/build/325164327#tabs-buildsteps 07:04:53
@vcunat:matrix.orgVladimír Čunát * I noticed when looking around Hydra that now tests.nix-copy very often fails, even on multiple older Nix branches, e.g. https://hydra.nixos.org/build/325164327#tabs-buildsteps or https://hydra.nixos.org/build/325166328 07:05:40
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)I’ve seen a lot of nixosTests timing out because backdoor service doesn’t spin up or something along those lines. It seems like something borked with vm tests machinery08:15:32
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)In nix-copy specifically I think we just lack some synchronisation between server/client08:18:18
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)

This seems like a smoking gun:


client: waiting for Password: to appear on screen
server # [  356.772255] sshd[897]: Timeout before authentication for connection from 2001:db8:1::1 to 2001:db8:1::2, pid = 1023
08:30:38
@juhp:matrix.orgJens Petersen I am getting this warning/error on Fedora with nix-2.34:
warning: unable to download 'https://channels.nixos.org/flake-registry.json': Problem with the SSL CA cert (path? access rights?) (77) error adding trust anchors from file: ; using cached version
Any ideas? (nix-2.33 seems okay)
10:00:16
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)Hm, that’s with the release binaries, right? Wonder why the path is empty10:43:38
@juhp:matrix.orgJens Petersen Sergei Zimmerman (xokdvium): no it is a fedora build 11:15:45
@juhp:matrix.orgJens Petersen Okay thanks Sergei Zimmerman (xokdvium) - seems i need to set ssl-cert-file now 11:29:57
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)For onlookers, Jens shared that fedora 44 is removing the default PEM certs https://fedoraproject.org/wiki/Changes/droppingOfCertPemFile11:42:22
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)Not a nix change11:42:55
19 May 2021
@eelco:nixos.org@eelco:nixos.org changed the history visibility to "world_readable" from "shared".15:40:14
@eelco:nixos.org@eelco:nixos.org changed the room name to "Nix Hackers" from "Nix Development".15:45:04
@eelco:nixos.org@eelco:nixos.org changed the room topic to "For people hacking on the Nix package manager itself" from "Development of the Nix package manager".15:45:04
@casey:hubns.netcransom joined the room.15:45:08
@sumner:sumnerevans.comsumner joined the room.15:45:19
@danielle:fairydust.spacedanielle joined the room.15:47:55
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