#nixos-dev on 2020-09-28

2020-09-12 12:40 sphalerite changed the topic of #nixos-dev to: NixOS Development (#nixos for questions) | NixOS stable: 20.03 ✨ | 20.09 ZHF: https://discourse.nixos.org/t/nixos-20-09-zero-hydra-failures/8928 | https://hydra.nixos.org/jobset/nixos/trunk-combined https://channels.nix.gsc.io/graph.html | https://r13y.com | 20.03 RMs: worldofpeace, disasm; 20.09: worldofpeace, jonringer | https://logs.nix.samueldr.com/nixos-dev

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05:05 <cole-h> Is the fact that there are tons of queued builds for nixos-unstable-small at all alarming? I don't think I've ever seen that many queued in... ever... https://i.imgur.com/s7it0WB.png

05:16 <srhb> cole-h: Nothing looks completely broken, but there are definitely some very slow builds going on that look suspect..

05:17 <srhb> (That is, it looks like all jobsets are progressing, albeit slowly)

05:18 <cole-h> OK, fair. I think it's been like that for a few days now, though, which is why I bring it up.

05:19 <srhb> Yeah, I'm not sure either... :)

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07:31 <eyJhb> https://github.com/NixOS/nixpkgs/pull/98451 should be ready to merge, if anyone have the time

07:31 <{^_^}> #98451 (by eyJhb, 5 days ago, open): purple-slack: 2019-08-19 - 2020-09-22

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09:06 <Valodim> how can I use `nix why-depends` on a shell.nix that's not a flake?

09:10 <Valodim> ...or `nix path-info`, for that matter?

09:10 <Valodim> is that not possible without a flake.nix anymore?

10:16 <niksnut> using -f <expr>

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10:34 <Valodim> sorry, I can't figure it out even with that info. `nix path-info -rsSh -f shell.nix` tells me "path '/nix/store/9k9zywh78mp1mdd3flz1lcnmc4n3aakg-nix-shell' is not valid"

11:07 <gchristensen> somebody sent me a report of a security vulnerability in NixOS. I've asked in #nixos-security and didn't get any reply. Anyone here available to take it and get it resolved?

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15:14 <stigo> about to merge #98454 into master unless anyone objects, should only affect perl-cross and perldevel so no large rebuilds.

15:14 <{^_^}> https://github.com/NixOS/nixpkgs/pull/98454 (by stigtsp, 6 days ago, open): perldevel: 5.33.1 -> 5.33.2, perl-cross: 15ca535 -> f59d2b6

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20:09 <cole-h> Something that just occurred to me... Is there going to be an alternative to nix-shell shebangs when nix(1) is finalized? Or will it stay as nix-shell?

20:11 <cole-h> e.g. will it change to `#!/usr/bin/env nix` and `#!nix shell -f'<nixpkgs>' pkg1 -i interpreter` (or something similar)?

20:13 <samueldr> is there even a plan to deprecate and remove the nix-* commands yet?

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20:15 <cole-h> I figured that was a logical assumption (seems like "new" always deprecates and/or removes "old"), but I'd be happy to keep them around.

20:15 <infinisil> cole-h: I believe shebangs already work with the nix command

20:15 <cole-h> Oh?

20:15 <infinisil> Pretty sure I tested this at some point

20:15 <infinisil> Lemme grep through my irc logs

20:17 <infinisil> cole-h: #!/usr/bin/env -S nix run nixpkgs.hello -c bash

20:17 * cole-h tries

20:18 <qyliss> that's not really the same thouhg

20:18 <samueldr> cole-h: my thought was almost orthogonal

20:18 <qyliss> because it doesn't do the special second shebang nix-shell does

20:18 <infinisil> https://logs.nix.samueldr.com/nixos/2019-11-27#1574855642-1574857245;

20:18 <qyliss> which is important if you don't have env -S

20:19 <cole-h> infinisil: Hm. Using that shebang and having the second line be `hello` doesn't work. (hello not found)

20:19 <infinisil> Well it worked at that point lol

20:19 <infinisil> Which was like, 10 months ago

20:20 <infinisil> cole-h: Works for me

20:21 <cole-h> #!/usr/bin/env -S nix run nixpkgs.hello -c bash

20:21 <cole-h> hello

20:21 <cole-h> $ ./test.sh

20:21 <cole-h> exec: Exec format error

20:21 <infinisil> cole-h: No actual spaces in the beginning?

20:21 <cole-h> No spaces except separating the shebang args

20:21 <cole-h> jk

20:22 <cole-h> lmao

20:22 <cole-h> infinisil++ Thanks :)

20:22 <{^_^}> infinisil's karma got increased to 357

20:22 <infinisil> Haha

20:23 <cole-h> Shebang ended as `#!/usr/bin/env -S nix shell -f '<pkgs>' hello -c bash` for me (where <pkgs> is basically <nixpkgs>)

20:24 <cole-h> But qyliss's point is a good one -- that `-S` is easily-forgotten (and I even had no idea it existed)

20:24 <worldofpeace> ooh that's cool 👍️

20:24 <infinisil> I don't mind the -S, it makes it much less hacky than the #!nix-shell shebang

20:25 <cole-h> Faitr

20:25 <cole-h> s/t//

20:25 <samueldr> is -S posix compliant?

20:26 <cole-h> Don't think so

20:26 <infinisil> samueldr: See the irc logs I posted

20:26 <cole-h> Based on https://pubs.opengroup.org/onlinepubs/9699919799/utilities/env.html at least

20:26 <infinisil> I quote: 12:07 <infinisil> Ah, "Fortunately, modern versions of env have a solution. macOS and FreeBSD support the -S option, which does, quote the macOS manual:"

20:27 <cole-h> Would IFS work to trick that for POSIX env?

20:27 <infinisil> Isn't IFS a bashism?

20:28 <cole-h> o

20:28 <cole-h> Then I guess not lol

20:30 <qyliss> not requiring non-POSIX functionality is very important here IMO, because a big point of the feature is to be able to write scripts that run on as many systems as possible as long as they're running Nix

20:31 <cole-h> qyliss++

20:31 <{^_^}> qyliss's karma got increased to 73.00000000000001

20:31 <qyliss> busybox env doesn't even support -S

20:31 <drakonis> https://github.com/openzfs/zfs/issues/10982

20:31 <{^_^}> openzfs/zfs#10982 (by cheesycod, 2 days ago, open): FATAL: modpost: GPL-incompatible module zzstd.ko uses GPL-only symbol 'mutex_lock_nested'

20:31 <drakonis> aight peeps

20:31 <drakonis> 5.9 approaches

20:33 <infinisil> Hmm, I guess for just some random script, using -S might be fine

20:33 <infinisil> But yeah might be good to have a fully posix-compliant way as well

20:33 <qyliss> maybe, but there needs to be a better (more portable) solution

20:33 <qyliss> and then once that exists, might as well use it everywhere

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22:11 <worldofpeace> samueldr: infinisil do you think you could do this time https://www.thetimezoneconverter.com/?t=15:00&tz=ET%20(Eastern%20Time) on Friday for GO / NO-GO? asking because I didn't get your response in the thing

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22:35 <samueldr> I could, but I didn't know whether I'd participate or not

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23:37 <infinisil> Same ^ I'm not very involved in nixpkgs recently

23:38 <infinisil> worldofpeace: Feel free to ping me at that time though, I might join still :)

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23:44 <worldofpeace> okay, I can ping you at that time. I don't really think your presences are exactly required, but for the subsystems you're active in a formal GO will be useful to us (like the aarch64 situation atm is going to be on topic) . If you really feel like you don't have anything to add then irc is appropriate