[CRASH] Opening the vcpkg settings page throws duplicate key exception for arm64-linux #4537
Description
Summary
Opening the vcpkg package manager settings page causes UniGetUI to fail navigation because the item arm64-linux is added twice.
Version
- UniGetUI 2026.1.3
- Build 107
Steps to reproduce
- Start UniGetUI.
- Open Settings.
- Navigate to the vcpkg package manager page.
Actual behavior
The page fails to open and UniGetUI raises an unhandled exception:
Unhandled Exception raised: An item with the same key has already been added. Key: arm64-linux
at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
at UniGetUI.Pages.SettingsPages.GeneralPages.PackageManagerPage.OnNavigatedTo(NavigationEventArgs e)
Expected behavior
The vcpkg settings page should open normally, even if the triplet source contains duplicate values.
Relevant log excerpt
[2026-3-31 10:54:49] Unhandled Exception raised: An item with the same key has already been added. Key: arm64-linux
[2026-3-31 10:54:49] Stack Trace:
at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
at UniGetUI.Pages.SettingsPages.GeneralPages.PackageManagerPage.OnNavigatedTo(NavigationEventArgs e) in D:\a\UniGetUI\UniGetUI\src\UniGetUI\Pages\SettingsPages\ManagersPages\PackageManager.xaml.cs:line 350
at Microsoft.UI.Xaml.Controls.Page.Microsoft.UI.Xaml.Controls.IPageOverrides.OnNavigatedTo(NavigationEventArgs e)
at ABI.Microsoft.UI.Xaml.Controls.IPageOverrides.Do_Abi_OnNavigatedTo_1(IntPtr thisPtr, IntPtr e)
Additional note
Based on the stack trace, the crash appears to happen while populating the vcpkg triplet list for the settings page, and arm64-linux seems to be present more than once.