| 26 Feb 2026 |
 raitobezarius | once you get lix, please send us nix doctor | 14:12:35 |
| raitobezarius | and check that your service management for lix is running correctly | 14:12:44 |
 neobrain | As a last attempt, I tried updating cppnix, which weirdly enough brought me from 2.33.0 to 2.31.3 (lol). But at least my non-root user can use nix again | 14:51:42 |
 hexa | with upgrade-nix? that one is braindead | 15:03:44 |
| neobrain | no, upgrade-nix as used by the lix installer (?) doesn't seem to work at all. I followed the instructions on https://nix.dev/manual/nix/2.33/installation/upgrading.html instead | 15:10:28 |
| neobrain | Apparently those upgrade instructions move you to whatever nix version ships with nixos by default, which currently is the downgrade I observed. | 15:19:54 |
| hexa | yeah, hence brain-dead | 15:21:45 |
| neobrain | I was about to praise how the lix manual doesn't do this. But instead it suggests upgrade-nix, which was just called braindead, so now I have conflicted feelings :D | 15:21:48 |
| hexa | it's not an upgrade if the version decreases | 15:21:52 |
 helle (just a stray cat girl) | the manual is erm, a work in progress and is working off of the original nix manual, so it is a bit of a hassle to remove some bad practices in it | 15:23:27 |
| helle (just a stray cat girl) | (as in, even finding that they are in there can be an issue, as very few read the entire thing back to back) | 15:23:57 |
 flippette | i'm getting error: error reading daemon response: error: stream ended unexpectedly when building kcmutils-5.116.0, is this a Lix bug? | 15:26:21 |
| flippette | Download nix-build.log | 15:28:14 |
| flippette | this shows up in journalctl | 15:28:21 |
| raitobezarius | we have been considering killing upgrade-nix: https://git.lix.systems/lix-project/lix/issues/1112 | 15:29:57 |
| raitobezarius | oh well, this looks like a bondafide segfault | 15:30:52 |
| raitobezarius | flippette can you open an issue with that stacktrace and attach the corefile that coredumpctl will provide you? | 15:31:13 |
| flippette | yeah, i'm doing that | 15:31:31 |
| raitobezarius | thanks! | 15:31:36 |
|  @zshipko:matrix.org left the room. | 19:24:06 |
| 27 Feb 2026 |
 @sofiedotcafe:matrix.org | Can somebody invite sofiedotcafe@catgirl.cloud here | 10:28:30 |
|  Sofie 🏳️⚧️🐾 (she/her) joined the room. | 10:41:49 |
| @sofiedotcafe:matrix.org left the room. | 10:44:22 |
|  pulu joined the room. | 15:44:41 |
|  @lavender.pet:matrix.org changed their display name from lavender.pet to find me at @lavender.pet:queer.sh. | 20:17:38 |
|  @lavender.pet:voip.vera-visions.com changed their display name from lavender.pet to find me at @lavender.pet:queer.sh. | 20:17:22 |
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| 28 Feb 2026 |
 Arian | I found a package that builds on Hydra but doesn't build locally with lix:
nix build github:NixOS/nixpkgs/nixos-25.11#composefs --rebuild
It's fixed by this commit https://github.com/composefs/composefs/pull/415 (which has not been backported to 25.11) but kinda interesting to see a package that hydra builds just fine failing on lix consistently
stderr:
-rw-r--r-- 1 nixbld nixbld 127 Feb 28 09:38 /build/lcfs-test.tWix4N/test_mount_digest.u1D2jQ/stderr
mount.composefs: Failed to mount composefs /build/lcfs-test.tWix4N/test_mount_digest.u1D2jQ/test.cfs: Operation not permitted
File '/build/lcfs-test.tWix4N/test_mount_digest.u1D2jQ/stderr' doesn't match regexp 'Permission denied|No such file or directory'
Seems to be a sandbox difference somehow?
| 09:44:49 |
| Arian | * I found a package that builds on Hydra but doesn't build locally with lix:
nix build github:NixOS/nixpkgs/nixos-25.11#composefs --rebuild
It's fixed by this commit https://github.com/composefs/composefs/pull/415 (which has not been backported to 25.11) but kinda interesting to see a package that hydra builds just fine failing on lix consistently
stderr:
-rw-r--r-- 1 nixbld nixbld 127 Feb 28 09:38 /build/lcfs-test.tWix4N/test\_mount\_digest.u1D2jQ/stderr
# mount.composefs: Failed to mount composefs /build/lcfs-test.tWix4N/test\_mount\_digest.u1D2jQ/test.cfs: Operation not permitted
#
File '/build/lcfs-test.tWix4N/test\_mount\_digest.u1D2jQ/stderr' doesn't match regexp 'Permission denied|No such file or directory'
Seems to be a sandbox difference somehow?
| 09:45:05 |
