Opencode build fails in a nix flake input #18273

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1. filipeltsilva

   added

   bugSomething isn't workingSomething isn't working

   on Mar 19, 2026
2. github-actions

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   rekram1-node

   on Mar 19, 2026
3. github-actions

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   nix

   on Mar 19, 2026
4. github-actions commented on Mar 19, 2026

   

   github-actionsbot

   on Mar 19, 2026 – with GitHub Actions

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   This issue doesn't fully meet our contributing guidelines.

   What needs to be fixed:

   • Steps to reproduce is empty — please provide the exact commands or steps used to trigger the build failure (e.g. the nix command you ran, your flake input configuration)
   • OpenCode version is empty — please provide the version you are using
   • Operating System field is empty — you mentioned macOS Sonoma in the description, but please fill in the dedicated field as well

   Please edit this issue to address the above within 2 hours, or it will be automatically closed.

   ---

   This issue might be a duplicate of existing issues. Please check:

   • Nix flake: desktop package fails to build - missing outputHashes for specta git dependency #11755: Nix flake build failure (desktop package, missing outputHashes for git dependency)
   • Bun version mismatch with nixpkgs causes Nix build failure #15394: Bun version mismatch with nixpkgs causes Nix build failure (closed)
   • Failed to build opencode v1.2.15 with nix flake #15635: Failed to build opencode with nix flake due to bun version mismatch (closed)

   If your error matches one of the above, please comment there instead (or reference it here with details on how your case differs).

   If you believe this was flagged incorrectly, please let a maintainer know.
5. github-actions

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   needs:complianceThis means the issue will auto-close after 2 hours.This means the issue will auto-close after 2 hours.

   and removed

   needs:complianceThis means the issue will auto-close after 2 hours.This means the issue will auto-close after 2 hours.

   on Mar 19, 2026
6. github-actions commented on Mar 19, 2026

   

   github-actionsbot

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   Thanks for updating the issue! It now meets our contributing guidelines. We appreciate you providing the steps to reproduce, your OpenCode version, and system information.
7. filipeltsilva commented on Mar 19, 2026

   

   filipeltsilva

   on Mar 19, 2026

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   Apparently, the flake runs bun install one way or another without consider if bun is locally installed.
8. gigamonster256 commented on Mar 24, 2026

   

   gigamonster256

   on Mar 24, 2026

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   bun requires a CPU with AVX extensions to run - hence the illegal instruction error message. You can try overriding the bun version to baseline, but according to nixpkgs even that will have issues
9. filipeltsilva commented on Mar 24, 2026

   

   filipeltsilva

   on Mar 24, 2026

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   My CPU is a Sandy Bridge generation. It has AVX support (256-bit SIMD). I'll do some research to see what I can do, because I can't acquire new hardware for now.
10. kirelagin commented on Apr 25, 2026

    

    kirelagin

    on Apr 25, 2026

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    I think “Illegal Instruction” (i.e. SIGILL) on macOS does not necessarily mean that it is an unsupported CPU instruction, it could also be a system library incompatibility. Nixpkgs does not build bun itself, it just pulls pre-compiled binaries from the upstream, so it might be that those binaries require a newer macOS than what you have.
11. kirelagin commented on Apr 25, 2026

    

    kirelagin

    on Apr 25, 2026

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    That’s actually oven-sh/bun#26872.
12. ghaif commented on Apr 29, 2026

    

    ghaif

    on Apr 29, 2026

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    same issue in nixos, and it has been for a while
13. thdxr

    removed

    bugSomething isn't workingSomething isn't working

    nix

    on May 3, 2026
14. alain-san commented on May 28, 2026

    

    alain-san

    on May 28, 2026

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    same issue in nixos

    👍React with 👍2Reacted by suptimal and John-Appleseed
15. github-actions commented on Jul 28, 2026

    

    github-actionsbot

    on Jul 28, 2026 – with GitHub Actions

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    To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.
16. github-actions

    closed this as not plannedon Jul 28, 2026