[BUG] Bash installation method failure on Linux

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Trying to run the installation command on a GNU Guix machine with an i3-N300 CPU (x86_64), I got an error that is not very informative:

$ curl -fsSL https://claude.ai/install.sh | bash
Setting up Claude Code...
bash: line 151: /home/mat/.claude/downloads/claude-2.1.68-linux-x64: cannot execute: required file not found

The file is present:

$ ls .claude/downloads/claude-2.1.68-linux-x64 
.claude/downloads/claude-2.1.68-linux-x64*

Executing this binary manually results in the same error, but it doesn't tell which file it's failing to find.

Not sure what to do. The same worked fine on another GNU Guix machine with an i7 1195G7 Intel CPU.

What Should Happen?

The installation should proceed or at least provide a more meaningful error.

Error Messages/Logs

Steps to Reproduce

curl -fsSL https://claude.ai/install.sh | bash

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.68

Platform

Other

Operating System

Other Linux

Terminal/Shell

Other

Additional Information

_No response_