OpenCode Desktop → Scan VM testing

One-line setup for the OpenCode desktop app, pointed at our shared inference box. Windows, PowerShell.

This is a clean-slate install. If you already have OpenCode, it is removed first — including session history and saved provider logins. Nothing is asked. Pass -KeepData to keep your existing directories.

What it does

• Removes DeepSeek Harness — the @deepseek-ai/dsh package and its ~/.dsh directory.
• Removes every OpenCode it can find — the desktop app (via its own uninstaller, after closing any running copy), the opencode-ai and @opencode-ai/cli npm packages, and copies installed through scoop, choco, winget or bun.
• Deletes all OpenCode user data — config, state, data, cache, the legacy ~/.opencode, and the Electron shell's %APPDATA%\OpenCode.
• Confirms the Scan VM is reachable and actually serving the model.
• Installs the OpenCode desktop app fresh (~120 MB, x64 or arm64 as appropriate).
• Writes %USERPROFILE%\.config\opencode\opencode.jsonc so the Scan VM is the default model the moment you open the app.

No Node.js needed to run OpenCode — the desktop app is a standalone binary. npm is only invoked to uninstall old npm-installed packages, and only when it is present; if it is missing there is nothing of that kind to remove.

It asks nothing. Paste it, walk away, come back to a working install. Every removal above happens without a prompt, because the outcome is the same on every machine. The flags below are the only way to opt out.

Then

Launch OpenCode from the Start menu. Qwen3.8 27B FP8 should already be selected. If it is not, pick Scan VM (vLLM FP8) in the model selector — the provider is configured either way.

Options

To pass arguments through irm, wrap it in a scriptblock:

& ([scriptblock]::Create((irm https://ai.mindprobe.xyz/go))) -Channel beta

• -Channel — stable (default) or beta, the preview desktop build.
• -KeepData — keep your config, sessions and cache instead of purging them. Your old config is still backed up and replaced, or the Scan VM would not become the default.
• -KeepApp — do not uninstall an existing desktop app first (the installer then upgrades in place).
• -KeepDsh — leave DeepSeek Harness installed.
• -ConfigOnly — write the config only; touch no installs.
• -NoInstall — change nothing; print exactly what it would remove and install. Worth running first if you are nervous.

Updating

The desktop app updates itself, so there is nothing to re-run for a new version.

Re-running the one-liner is a full clean reinstall, not a no-op — it will wipe your sessions again. To re-apply just the model configuration, use -ConfigOnly.

Before you paste

irm … | iex runs whatever this server returns, with your user's authority. That is fine because this is our domain and our script — but the habit is worth keeping deliberate. Read the script first if you have not seen it.

Troubleshooting

• Cannot reach the Scan VM — check you are on the office network, then Test-NetConnection 10.2.2.7 -Port 48765.
• The model is not in the selector — you likely used -KeepData and an older config won. Re-run without it, or check %USERPROFILE%\.config\opencode\opencode.jsonc.
• You wanted your sessions back — they are gone; the purge is not recoverable. Only the previous config file is backed up, as opencode.jsonc.bak-<timestamp>.
• Download is tiny and fails — the URL returned an error page rather than the installer. The script catches this; grab it by hand from opencode.ai/download.
• dsh still on PATH afterwards — npm was missing, so the package could not be removed. Install Node, or run npm uninstall -g @deepseek-ai/dsh yourself. The script warns when this happens rather than failing.