OpenCode Desktop → Scan VM testing

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

What it does

• Removes DeepSeek Harness if it finds it — the package and its ~/.dsh directory. We are no longer using it, so this is not asked about; pass -KeepDsh if you want it left alone.
• Confirms the Scan VM is reachable and actually serving the model.
• Downloads and silently installs the OpenCode desktop app (~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. The desktop app is a standalone binary — npm is only used to uninstall the old harness, and only if it is present.

It asks nothing. Paste it, walk away, come back to a working install. The one thing it will not do unprompted is overwrite an existing opencode config — see Updating below.

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.
• -Force — replace an existing opencode config (backs it up first).
• -KeepDsh — leave DeepSeek Harness installed.
• -ConfigOnly — write the config, skip the download.
• -Reinstall — reinstall the app even if already present.
• -NoInstall — change nothing; just report what it would do.

Updating

The desktop app updates itself — there is nothing to re-run for a new version. Re-run the one-liner only to repair or re-apply the configuration.

Your config is never overwritten on a re-run. If you already have an opencode.jsonc, the script writes opencode.scan-provider.jsonc beside it for you to merge, or use -Force.

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 — an existing config was left in place. Look for opencode.scan-provider.jsonc next to your opencode.jsonc and merge it, or re-run with -Force.
• 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.