Build failure: mcphost

[samueltardieu]

Nixpkgs version

• Unstable (25.11)

Steps to reproduce

nix shell nixpkgs#mcphost

Can Hydra reproduce this build failure?

Yes, Hydra can reproduce this build failure.

Link to Hydra build job

https://hydra.nixos.org/build/309853224

Relevant log output

error: builder for '/nix/store/6gmny0blq1m28mfcrm7lxb7lqygnvgd0-mcphost-0.19.2.drv' failed with exit code 1;
       last 11 log lines:
       > Running phase: unpackPhase
       > unpacking source archive /nix/store/gll8c3man372gpyjiy9q45izcn430bcd-source
       > source root is source
       > Running phase: patchPhase
       > Running phase: updateAutotoolsGnuConfigScriptsPhase
       > Running phase: configurePhase
       > Running phase: buildPhase
       > Building subPackage .
       > # github.com/bytedance/sonic/internal/rt
       > vendor/github.com/bytedance/sonic/internal/rt/stubs.go:33:22: undefined: GoMapIterator
       > vendor/github.com/bytedance/sonic/internal/rt/stubs.go:36:54: undefined: GoMapIterator
       For full logs, run:
         nix log /nix/store/6gmny0blq1m28mfcrm7lxb7lqygnvgd0-mcphost-0.19.2.drv

Additional context

No response

System metadata

• system: "x86_64-linux"
• host os: Linux 6.12.48, NixOS, 25.11 (Xantusia), 25.11.20250924.e643668
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.28.5
• channels(root): "nixos, nixos-hardware"
• nixpkgs: /nix/store/cf1g0afyf2xcxfzg35hh4cd4x6wl242q-nixpkgs/nixpkgs

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