---
synopsis: "nix3-build: show all FOD errors with `--keep-going`"
prs: 10734
---

The [`nix build`](@docroot@/command-ref/new-cli/nix3-build.md) command has been updated to improve the behavior of the [`--keep-going`] flag. Now, when `--keep-going` is used, all hash-mismatch errors of failing fixed-output derivations (FODs) are displayed, similar to the behavior for other build failures. This enhancement ensures that all relevant build errors are shown, making it easier for users to update multiple derivations at once or to diagnose and fix issues.

Author: [**Jörg Thalheim (@Mic92)**](https://github.com/Mic92), [**Maximilian Bosch (@Ma27)**](https://github.com/Ma27)

[`--keep-going`](@docroot@/command-ref/opt-common.md#opt-keep-going)
