Describe the bug

I was doing a nixos-rebuild switch when I was greeted with a "lost connection to nix-daemon, maybe it crashed" (from memory)

Looking at journalctl, I can see:

oct. 07 09:50:02 jedha HOST[67468]: nix-daemon: ../build/derivation-goal.cc:186: nix::Goal::Co nix::DerivationGoal::haveDerivation(): Assertion `buildResult.builtOutputs.count(wantedOutput) > 0' failed.

This is with nix 2.31.1.

what might have triggered this:

• I modified the flake after starting the command (added an input) ?
• I've got > 20 cores on CPU

Steps To Reproduce

Cant reproduce .

Expected behavior

No crash.

Metadata

Additional context

Checklist

I will check with more recent nix after update

• checked latest Nix manual (source)
• checked open bug issues and pull requests for possible duplicates

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