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Document Ghostty SSH env forwarding for Tart Linux VM #194

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6 changes: 6 additions & 0 deletions README.md
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Expand Up @@ -203,6 +203,12 @@ Avoid ten-second hangs by enabling Ubuntu to resolve the local hostname:
echo "127.0.1.1 $(hostname)" | sudo tee -a /etc/hosts
```

The cirruslabs image is currently Ubuntu 24.04, whose default `sshd_config` only has `AcceptEnv LANG LC_*`, so [allow Ghostty's environment forwarding over SSH](https://ghostty.org/docs/features/shell-integration#remote-sshd-configuration) (Ubuntu 26.04's default already accepts `COLORTERM`, so this becomes redundant once the image updates):

```sh
echo AcceptEnv COLORTERM TERM_PROGRAM TERM_PROGRAM_VERSION | sudo tee /etc/ssh/sshd_config.d/101-color.conf
```

Next, install Nix:

```sh
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