| 11 Apr 2026 |
 raitobezarius | to keep using Lix with very old Nixpkgs that suffers from deprecated features | 12:00:57 |
| raitobezarius | I personally care about the ability to evaluate over decades but I don't want this (secondary?) goal to stand in the path of evolution, so there must be some mechanisms to achieve both things while balancing out efforts | 12:02:15 |
 blitz | Yes that's sensible | 12:55:57 |
| blitz | Since most of the deprecations are just syntax, having a way to specify what nix language version you want to parse would also be cool (a bit like rust editions) | 12:57:09 |
| raitobezarius | It's the whole topic of langver at Lix that we want to address someday | 12:59:32 |
| raitobezarius | (there's also its variants: derivation versions too) | 12:59:47 |
 lassulus | langver would be cool | 13:31:18 |
 kfiz | Indeed. I think there needs to be a clear story or at least good “central” recommendations on how to approach which use cases in lix (nix). Currently it’s to confusing even for people who have been using nix for a while. | 15:42:30 |
| raitobezarius | Yep, definitely | 17:10:42 |
 Lotte (it/its)/Cinny (she/her) θΔ& | is there a lix equivalent of the cppnix setting [abort-on-warn](https://nix.dev/manual/nix/2.24/command-ref/conf-file#conf-abort-on-warn)? | 18:27:03 |
 whispers [& it/fae] | yes it's abort-on-warn (added in 2.95) | 18:32:20 |
| whispers [& it/fae] | second item here https://docs.lix.systems/manual/lix/stable/release-notes/rl-2.95.html#features | 18:33:17 |
| Lotte (it/its)/Cinny (she/her) θΔ& | oh | 18:39:26 |
| Lotte (it/its)/Cinny (she/her) θΔ& | should have used .latest instead of .stable | 18:40:01 |
| Lotte (it/its)/Cinny (she/her) θΔ& | thanks | 18:40:06 |
| 12 Apr 2026 |
|  Crystal changed their profile picture. | 02:15:00 |
|  Sappho joined the room. | 06:32:14 |
|  leona changed their profile picture. | 12:15:24 |
| 13 Apr 2026 |
 Lisanna | I might take a crack at beginning to fix this at least for nix develop, I've been doing a little bit of work on that code recently. | 00:25:49 |
| Lisanna | There're some ideas for how to fix it in https://github.com/NixOS/nix/issues/7501 | 00:26:16 |
|  evelyn joined the room. | 03:23:12 |
 K900 | In reply to @lisanna-dettwyler:matrix.org
I might take a crack at beginning to fix this at least for nix develop, I've been doing a little bit of work on that code recently. This is very cross-cutting tbh | 05:03:57 |
| K900 | I think you'd have to start at nixpkgs | 05:04:08 |
| K900 | And probably structuredAttrs? | 05:04:30 |
| blitz | I almost have a prototype of attic that solves this for now by calling the Nix CLI. Will check gorgon once I have something working. One last obstacle: Is there a stable way to list the signatures of a store path without resorting to nix path-info (which has changed output formats a couple of times...) ? | 07:35:48 |
| Lisanna | Oh for sure, the whole point would be to make nixpkgs do the heavy lifting here | 08:11:59 |
 zoë (she/her) | is there any way to see previous build logs after rebuilding a derivation? kind of like journalctl's --boot option to see previous boot logs instead of the current one. it seems like nix overwrites them now; would there be any obstacle to renaming them to foo.drv-1, foo.drv-2, etc when a new build is launched? | 08:41:12 |
| zoë (she/her) | * is there any way to see previous build logs after rebuilding a derivation? kind of like journalctl's --boot option to see previous boot logs instead of the current one. it seems like current nix overwrites them; would there be any obstacle to renaming them to foo.drv-1, foo.drv-2, etc when a new build is launched? | 08:41:27 |
 boop-north | I did sudo -i nix upgrade-nix and now can't run commands related to nix. `nix/var/nix/profiles/default/bin exists in path | 09:56:08 |
| boop-north | I did sudo -i nix upgrade-nix and now can't run commands related to nix. nix/var/nix/profiles/default/bin exists in path | 09:56:15 |
