[BUG] native install fails with EINVAL: invalid argument, copyfile '~/.cache/claude/staging/1.0.123/claude' -> ...

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?

When installing the native version of claude-code on Ubuntu 22.04.5 I get an error from copyfile.
Apparently, the installation aborts, because when I type the command 'claude' in the terminal, I get "command not found".

I tried to remove all relevant files and directories and try again, but got the same error. Here is the command I used to remove leftovers from a failed install:

rm -rf ~/.cache/claude ~/.local/share/claude ~/.claude*

After manually copying '~/.cache/claude/staging/1.0.123/claude' to '~/bin', I can run 'claude', but 'claude doctor' complains: "Warning: Running native installation but config install method is 'unknown'". Also, this setup will probably fail when claude code tries to update to a new version.

What Should Happen?

Claude Code native should get installed in ~/.local/share/claude and runnable.

Error Messages/Logs

The error message is:
✘ Installation failed

EINVAL: invalid argument, copyfile '/home/user/.cache/claude/staging/1.0.123/claude' -> '/home/user/.local/share/claude/versions/1.0.123.tmp.1129780.1758754356342'

Try running with --force to override checks

Steps to Reproduce

Try to install native Claude Code as suggested in documentation:
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

1.0.123 (Claude Code)

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Xterm

Additional Information

$ claude doctor

Diagnostics
└ Currently running: native (1.0.123)
└ Path: /home/user/bin/claude
└ Invoked: /home/user/claude-bin/claude
└ Config install method: unknown
└ Auto-updates enabled: default (true)
└ Search: OK (bundled)
Warning: Running native installation but config install method is 'unknown'
Fix: Run claude install to update configuration

$ cat /etc/os-release
PRETTY_NAME="Ubuntu 22.04.5 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.5 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy