Alyssa Ross <hi@alyssa.is> writes:

> Alyssa Ross <hi@alyssa.is> writes:
>
>> Bisected to the following range:
>>
>> 1e9c681 lib/nixpkgs.default.nix: update to nixos-unstable-small
>> f41b4ab tools: move lsvm out of subdirectory
>> 5ad749b tools: enable clippy::ptr-as-ptr lint
>> a4d7aa9 tools: enable clippy::map-unwrap-or lint
>> 3451250 host/rootfs: group VMM-backing services
>> 99f09ab pkgs: remove dbus overlay
>>
>> Most likely something in the Nixpkgs upgrade.  Needs further bisection.
>
> 1e9c6812b7497743a8473d5eb327c26c53cfbef2 is the first bad commit
> commit 1e9c6812b7497743a8473d5eb327c26c53cfbef2
> Author: Alyssa Ross <hi@alyssa.is>
> Date:   Sat Nov 22 13:13:28 2025 +0100
>
>     lib/nixpkgs.default.nix: update to nixos-unstable-small
>     
>     Signed-off-by: Alyssa Ross <hi@alyssa.is>
>
>  lib/nixpkgs.default.nix | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> So needs a Nixpkgs bisect.

# bad: [2ac8b8ee243d52c2a4b429307c23fb72cac43a5c] gitlab-runner: apply patch for file variable handling (#463714)
# good: [b549734f6b3ec54bb9a611a4185d11ee31f52ee1] codex: 0.56.0 -> 0.57.0 (#460287)
git bisect start '2ac8b8ee243d52c2a4b429307c23fb72cac43a5c' 'b549734f6b3ec54bb9a611a4185d11ee31f52ee1'
# good: [ccea08b7b36a1b1388c174d5b8398fcbb0bdb757] Merge master into staging-nixos
git bisect good ccea08b7b36a1b1388c174d5b8398fcbb0bdb757
# good: [ccea08b7b36a1b1388c174d5b8398fcbb0bdb757] Merge master into staging-nixos
git bisect good ccea08b7b36a1b1388c174d5b8398fcbb0bdb757
# bad: [6db9eed557c922da1e7dc287726e6e492ef24326] python313Packages.langchain: fix build (#461518)
git bisect bad 6db9eed557c922da1e7dc287726e6e492ef24326
# good: [1a41aa87c3f40f7493b3e4da391b2ff3af9ffb24] linux_6_17: 6.17.7 -> 6.17.8
git bisect good 1a41aa87c3f40f7493b3e4da391b2ff3af9ffb24
# bad: [14dc5ea9de0e8745374ecbdc6916e3c85b15e4e3] staging-nixos merge for 2025-11-14 (#461577)
git bisect bad 14dc5ea9de0e8745374ecbdc6916e3c85b15e4e3
# good: [c4d1151093af5d483d1900d9214a65e68bc21560] flutterPackages-source: clean (#460613)
git bisect good c4d1151093af5d483d1900d9214a65e68bc21560

Most likely looking remaining candidate is 6725ca2dabdd ("gtk3: 3.24.50 → 3.24.51").

I also found https://gitlab.com/qemu-project/qemu/-/issues/3191, which
looks like the same thing.  Doesn't look like there's a patch yet.  I'll
continue with the bisect in case it helps them to have the specific
change that caused the regression.

>> To reproduce:
>>
>> cd host/rootfs
>> nix-shell --run 'make clean && make run'
>> View → virtiocon0
>> Wait for kernel messages to finish
>> Try typing, see that backspace doesn't work