From 6f8953ccb92fea96fb1d2ae017d9c1ad7e5c6013 Mon Sep 17 00:00:00 2001
From: w0rldx <michaelgmx1@googlemail.com>
Date: Sat, 8 Aug 2026 19:36:44 +0200
Subject: [PATCH] fix(win): resolve apphost license pack from the SDK-chosen
 apphost path

The apphost-license copy target hardcoded the NuGet global cache path.
That only works when the installed SDK downloads the pinned apphost pack
to the cache; a machine whose SDK BUNDLES $(DotNetRuntimeVersion) serves
the apphost from its own packs/ dir and never populates the cache, so the
build failed with 'apphost MIT license is missing from the restored host
pack'. Derive the pack directory from $(AppHostSourcePath) (the exact
apphost the SDK resolved), with the old cache path as fallback. Verified:
Release build clean; RuntimeLicensePackagingTests 5/5; launcher publish
copies both license assets.
---
 .../XE-Local-AI-Engine.WindowsLauncher.csproj          | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/XE-Local-AI-Engine.WindowsLauncher/XE-Local-AI-Engine.WindowsLauncher.csproj b/XE-Local-AI-Engine.WindowsLauncher/XE-Local-AI-Engine.WindowsLauncher.csproj
index 6f0afcd7..a18d3cdd 100644
--- a/XE-Local-AI-Engine.WindowsLauncher/XE-Local-AI-Engine.WindowsLauncher.csproj
+++ b/XE-Local-AI-Engine.WindowsLauncher/XE-Local-AI-Engine.WindowsLauncher.csproj
@@ -10,7 +10,15 @@
           BeforeTargets="ComputeFilesToPublish"
           Condition="'$(UseAppHost)' == 'true' and $(RuntimeIdentifier.StartsWith('win-'))">
     <PropertyGroup>
-      <_WindowsApphostPackDirectory>$(NuGetPackageRoot)microsoft.netcore.app.host.$(RuntimeIdentifier)/$(DotNetRuntimeVersion)</_WindowsApphostPackDirectory>
+      <!--
+        Resolve the apphost pack directory from the exact apphost the SDK chose ($(AppHostSourcePath) points at
+        <pack>/runtimes/<rid>/native/apphost.exe, so three levels up is the pack root). This finds the license
+        whether the pack was downloaded to the NuGet global cache OR served from the SDK's own packs/ dir — a
+        machine whose SDK bundles $(DotNetRuntimeVersion) serves the apphost from packs/ and never populates the
+        cache, which is why the old cache-only path failed there. Falls back to the historical NuGet-cache path.
+      -->
+      <_WindowsApphostPackDirectory Condition="'$(AppHostSourcePath)' != ''">$([System.IO.Path]::GetFullPath('$([System.IO.Path]::GetDirectoryName($(AppHostSourcePath)))/../../..'))</_WindowsApphostPackDirectory>
+      <_WindowsApphostPackDirectory Condition="'$(_WindowsApphostPackDirectory)' == '' or !Exists('$(_WindowsApphostPackDirectory)/LICENSE.TXT')">$(NuGetPackageRoot)microsoft.netcore.app.host.$(RuntimeIdentifier)/$(DotNetRuntimeVersion)</_WindowsApphostPackDirectory>
     </PropertyGroup>
     <Error Condition="!Exists('$(_WindowsApphostPackDirectory)/LICENSE.TXT')"
            Text="The .NET $(DotNetRuntimeVersion) $(RuntimeIdentifier) apphost MIT license is missing from the restored host pack."/>