structuredAttrs is enabled

trying https://registry.npmjs.org/@musistudio/claude-code-router/-/claude-code-router-3.0.20.tgz
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100  4.55M 100  4.55M   0      0 11.28M      0                              0
unpacking source archive /nix/var/nix/builds/nix-26007-1206533382/claude-code-router-3.0.20.tgz