winui-setup Skill

Source

• Creator: microsoft
• Repository: microsoft/win-dev-skills
• Skill file: plugins/winui/skills/winui-setup/SKILL.md

What it does

Install and verify the prerequisites the win-dev-skills WinUI 3 toolchain depends on — .NET SDK 10, the WinApp CLI, the WinUI 3 .NET templates, and Developer Mode. Use when setting up a new machine, after a Windows reset, or when another winui skill reports a missing prerequisite (e.g., winapp not found, dotnet not fou

Skill instructions

Purpose Install and verify the prerequisites every other winui- skill assumes are already present on the machine. This skill is idempotent — every step checks first, skips if already satisfied, prints [OK] already installed and moves on. Re-running on a fully set-up machine is a fast no-op. Steps The first thing to do is batch all detection up front — run every check in parallel/together so you can show the user the full picture before installing anything. Then install only what's missing. Detect everything Run all of these together; collect the results: powershell .NET SDK — accept any installed SDK = 8.0 $dotnetSdks = (& dotnet --list-sdks 2$null) -replace ' .$','' $dotnetOk = $dotnetSdks | ForEach-Object { [version[0] } | Where-Object { $.Major -ge 8 } | Select-Object -First 1 WinApp CLI — needs to be present AND = 0.3 $winappVersion = $null $winappOk = $false $winappCmd = Get-Command winapp -ErrorAction SilentlyContinue if ($winappCmd) { $raw = (& winapp --version 2$null) -as [str