vscode-extensions.anthropic.claude-code: Missing darwin-arm64 binary

vscode-extensions.anthropic.claude-code: Missing darwin-arm64 binary causes "Unsupported platform" error

Describe the bug

The vscode-extensions.anthropic.claude-code extension only packages the Windows binary (claude.exe), causing an "Unsupported platform: darwin-arm64" error when used on Apple Silicon Macs.

Steps to reproduce

1. Add pkgs.vscode-extensions.anthropic.claude-code to VSCodium/VS Code extensions
2. Set mutableExtensionsDir = false in home-manager config
3. Open VSCodium
4. Claude Code extension fails with: "Error: Unsupported platform: darwin-arm64. No compatible Claude Code binary found."

Expected behaviour

The extension should either:

1. Package platform-specific binaries for darwin-arm64 (and other platforms)
2. Or respect the claudeCode.claudeProcessWrapper setting before checking for bundled binaries

Evidence

The packaged extension only contains the Windows binary:

$ ls /nix/store/*-vscode-extension-anthropic-claude-code-*/share/vscode/extensions/anthropic.claude-code/resources/native-binary/
claude.exe

The extension code (extension.js) looks for binaries at:

• resources/native-binaries/${platform}-${arch}/claude
• Falls back to resources/native-binary/claude

Neither path exists for darwin-arm64.

Current workaround

Using an overlay to symlink an externally installed Claude CLI:

{
  vscode-extensions = prev.vscode-extensions // {
    anthropic = prev.vscode-extensions.anthropic // {
      claude-code = prev.vscode-extensions.anthropic.claude-code.overrideAttrs (old: {
        postInstall = (old.postInstall or "") + ''
          mkdir -p $out/share/vscode/extensions/anthropic.claude-code/resources/native-binaries/darwin-arm64
          ln -s /path/to/claude $out/share/vscode/extensions/anthropic.claude-code/resources/native-binaries/darwin-arm64/claude
        '';
      });
    };
  };
}

Suggested fix

The VS Code extension marketplace distributes platform-specific .vsix files. The nixpkgs packaging should:

1. Fetch the correct platform-specific .vsix for the build platform
2. Or fetch all platform variants and include appropriate binaries

System information

• NixOS/nixpkgs version: unstable
• System: aarch64-darwin (Apple Silicon)
• Editor: VSCodium with home-manager programs.vscode

Metadata

• Notify: @maintainers of vscode-extensions

Start by reviewing the packaged extension's extension.js and the resources/native-binary and resources/native-binaries/${platform}-${arch} paths described in the report. Compare the platform-specific .vsix files from the VS Code marketplace for aarch64-darwin and other platforms. Done means the nixpkgs extension includes or selects a compatible Claude Code binary instead of reporting an unsupported platform.