From 843d0c601349649267777e018c838ecce4d0454d Mon Sep 17 00:00:00 2001
From: Matthew Leibowitz <mattleibow@live.com>
Date: Tue, 24 Feb 2026 18:24:24 +0200
Subject: [PATCH] Use wildcard versions for template dependencies in preview
 builds

When StabilizePackageVersion is false, strip the build number from
external dependency versions used in templates and replace with a
wildcard. For example, 11.0.0-preview.2.26103.111 becomes
11.0.0-preview.2.* so template-generated projects don't pin to a
specific build number during preview.

Affects: MS_EXT_LOG_DEBUG_VERSION_VALUE, MS_COMPONENTS_WEB_VERSION_VALUE,
MS_COMPONENTS_WEBASSEMBLY_VERSION_VALUE,
MS_COMPONENTS_WEBASSEMBLY_SERVER_VERSION_VALUE

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 .../src/Microsoft.Maui.Templates.csproj       | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/Templates/src/Microsoft.Maui.Templates.csproj b/src/Templates/src/Microsoft.Maui.Templates.csproj
index d69a81e135b7..9e3aec06a9d0 100644
--- a/src/Templates/src/Microsoft.Maui.Templates.csproj
+++ b/src/Templates/src/Microsoft.Maui.Templates.csproj
@@ -81,12 +81,29 @@
         DestinationFiles="%(TemplateJsonInput.RelativeDir)templatestrings.json"
         Condition="'%(TemplateJsonInput.Filename)%(TemplateJsonInput.Extension)' == 'templatestrings.en.json'" />
 
+    <!-- When not stabilized (preview builds), strip the build number and replace with a wildcard:
+         e.g. 11.0.0-preview.2.26103.111 -> 11.0.0-preview.2.*
+         MSBuild has no built-in API for semver parsing, so we use Regex to strip the trailing build segments. -->
+    <PropertyGroup Condition="'$(StabilizePackageVersion)' != 'true'">
+      <_PreviewWildcardPattern>(-[a-zA-Z][a-zA-Z0-9]*\.\d+)\.\d+\.\d+</_PreviewWildcardPattern>
+      <_TemplateLoggingDebugVersion>$([System.Text.RegularExpressions.Regex]::Replace('$(MicrosoftExtensionsLoggingDebugVersion)', '$(_PreviewWildcardPattern)', '%241.*'))</_TemplateLoggingDebugVersion>
+      <_TemplateComponentsWebVersion>$([System.Text.RegularExpressions.Regex]::Replace('$(MicrosoftAspNetCoreComponentsWebPackageVersion)', '$(_PreviewWildcardPattern)', '%241.*'))</_TemplateComponentsWebVersion>
+      <_TemplateComponentsWebAssemblyVersion>$([System.Text.RegularExpressions.Regex]::Replace('$(MicrosoftAspNetCoreComponentsWebAssemblyPackageVersion)', '$(_PreviewWildcardPattern)', '%241.*'))</_TemplateComponentsWebAssemblyVersion>
+      <_TemplateComponentsWebAssemblyServerVersion>$([System.Text.RegularExpressions.Regex]::Replace('$(MicrosoftAspNetCoreComponentsWebAssemblyServerPackageVersion)', '$(_PreviewWildcardPattern)', '%241.*'))</_TemplateComponentsWebAssemblyServerVersion>
+    </PropertyGroup>
+    <PropertyGroup Condition="'$(StabilizePackageVersion)' == 'true'">
+      <_TemplateLoggingDebugVersion>$(MicrosoftExtensionsLoggingDebugVersion)</_TemplateLoggingDebugVersion>
+      <_TemplateComponentsWebVersion>$(MicrosoftAspNetCoreComponentsWebPackageVersion)</_TemplateComponentsWebVersion>
+      <_TemplateComponentsWebAssemblyVersion>$(MicrosoftAspNetCoreComponentsWebAssemblyPackageVersion)</_TemplateComponentsWebAssemblyVersion>
+      <_TemplateComponentsWebAssemblyServerVersion>$(MicrosoftAspNetCoreComponentsWebAssemblyServerPackageVersion)</_TemplateComponentsWebAssemblyServerVersion>
+    </PropertyGroup>
+
     <!-- Replace .NET TFM versions -->
     <ReplaceFileText
         InputFilename="%(TemplateJsonInput.IntermediateLocation)"
         OutputFilename="%(TemplateJsonInput.IntermediateLocation)"
         MatchExpression="DOTNET_TFM_VALUE;DOTNET_TFM_VERSION_VALUE;DOTNET_TFM_VERSION_MAJOR_VALUE;MS_EXT_LOG_DEBUG_VERSION_VALUE;MS_COMPONENTS_WEB_VERSION_VALUE;MS_COMPONENTS_WEBASSEMBLY_VERSION_VALUE;MS_COMPONENTS_WEBASSEMBLY_SERVER_VERSION_VALUE"
-        ReplacementText="$(_MauiDotNetTfm);$(_MauiDotNetVersion);$(_MauiDotNetVersionMajor)000;$(MicrosoftExtensionsLoggingDebugVersion);$(MicrosoftAspNetCoreComponentsWebPackageVersion);$(MicrosoftAspNetCoreComponentsWebAssemblyPackageVersion);$(MicrosoftAspNetCoreComponentsWebAssemblyServerPackageVersion)" />
+        ReplacementText="$(_MauiDotNetTfm);$(_MauiDotNetVersion);$(_MauiDotNetVersionMajor)000;$(_TemplateLoggingDebugVersion);$(_TemplateComponentsWebVersion);$(_TemplateComponentsWebAssemblyVersion);$(_TemplateComponentsWebAssemblyServerVersion)" />
 
     <ItemGroup>
       <FileWrites Include="%(TemplateJsonInput.IntermediateLocation)" />