如何在Wix安装包中阻止ARM/ARM64安装不兼容的键盘驱动？

我正在开发一款基于MSKLC的键盘布局驱动安装程序，这类驱动具有架构特异性，需阻止用户在不兼容计算机上安装。

此前仅涉及x86、x64和Itanium架构时，检测相对简单。在wxs文件中使用如下代码块即可：

<?if $(sys.BUILDARCH) = x86 ?>
<Condition Message="!(loc.UnsupportedPlatformMessage)">Not Msix64</Condition>
<Condition Message="!(loc.UnsupportedPlatformMessage)">Not Intel64</Condition>
<?endif ?>

该代码可阻止x86版本在x64和Itanium平台安装，后两者的安装程序也会因兼容性缺失自动在x86及彼此平台安装失败。

但加入ARM和ARM64架构后，情况变复杂：Windows Installer未定义可检测的ARM专属属性，且ARM64系统支持x86和x64模拟。上述代码仍能让x86安装包提前失败，但找不到简单方法阻止x64安装包在ARM64平台安装。

我目前编写了如下代码块，并在LaunchConditions检查前调用ResolveCpuArchitecture自定义动作：

<?if $(sys.BUILDARCH) = x86 ?>
<Property Id="TargetArchitecture" Value="X86" />
<Launch Condition="NOT VersionNT64" Message="!(loc.UnsupportedPlatformMessage)" />
<?endif?>
<?if $(sys.BUILDARCH) = x64 ?>
<Property Id="TargetArchitecture" Value="AMD64" />
<?endif?>
<?if $(sys.BUILDARCH) = arm64 ?>
<Property Id="TargetArchitecture" Value="ARM64" />
<?endif?>
<Launch Condition="CpuArchitecture=TargetArchitecture" Message="!(loc.UnsupportedPlatformMessage)" />
<CustomAction Id="ResolveCpuArchitecture" Property="CpuArchitecture" Value="[%PROCESSOR_ARCHITECTURE]" />

但该方案不够优雅，且不确定是否按预期工作（目前ARM64安装包安装失败，原因不明），请问是否有更优实现方案？

方案1：利用环境变量区分真实与模拟架构 #

ARM64系统运行x64/x86程序时，PROCESSOR_ARCHITECTURE返回模拟架构值，但PROCESSOR_ARCHITEW6432会返回真实的ARM64。通过注册表读取这两个变量组合判断真实架构，无需自定义动作：

<!-- 读取真实架构属性 -->
<Property Id="REAL_CPU_ARCHITECTURE">
  <RegistrySearch Id="FindRealArch" Root="HKLM" Key="SYSTEM\CurrentControlSet\Control\Session Manager\Environment" Name="PROCESSOR_ARCHITEW6432" Type="raw" />
</Property>
<!-- 无PROCESSOR_ARCHITEW6432时，直接使用PROCESSOR_ARCHITECTURE -->
<SetProperty Id="REAL_CPU_ARCHITECTURE" Value="[%PROCESSOR_ARCHITECTURE]" After="AppSearch">NOT REAL_CPU_ARCHITECTURE</SetProperty>

<!-- 分架构设置启动条件 -->
<?if $(sys.BUILDARCH) = x86 ?>
<LaunchCondition Condition="REAL_CPU_ARCHITECTURE = &quot;X86&quot; OR NOT VersionNT64" Message="!(loc.UnsupportedPlatformMessage)" />
<?endif?>

<?if $(sys.BUILDARCH) = x64 ?>
<LaunchCondition Condition="REAL_CPU_ARCHITECTURE = &quot;AMD64&quot;" Message="!(loc.UnsupportedPlatformMessage)" />
<?endif?>

<?if $(sys.BUILDARCH) = arm64 ?>
<LaunchCondition Condition="REAL_CPU_ARCHITECTURE = &quot;ARM64&quot;" Message="!(loc.UnsupportedPlatformMessage)" />
<?endif?>

方案2：使用Wix UtilExtension获取真实架构 #

Wix的UtilExtension提供GetWindowsVersion动作，可获取包含真实架构的WindowsVersion.Platform属性，值对应X86/X64/ARM/ARM64。
首先引入扩展：

<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi" xmlns:util="http://schemas.microsoft.com/wix/UtilExtension">

然后添加动作和条件：

<CustomActionRef Id="WixGetWindowsVersion" />

<?if $(sys.BUILDARCH) = x86 ?>
<LaunchCondition Condition="WindowsVersion.Platform = &quot;X86&quot;" Message="!(loc.UnsupportedPlatformMessage)" />
<?endif?>

<?if $(sys.BUILDARCH) = x64 ?>
<LaunchCondition Condition="WindowsVersion.Platform = &quot;X64&quot;" Message="!(loc.UnsupportedPlatformMessage)" />
<?endif?>

<?if $(sys.BUILDARCH) = arm64 ?>
<LaunchCondition Condition="WindowsVersion.Platform = &quot;ARM64&quot;" Message="!(loc.UnsupportedPlatformMessage)" />
<?endif?>

方案3：修复原有自定义动作的执行逻辑 #

若坚持使用原有方案，需调整动作执行顺序并修正架构检测逻辑：

<!-- 确保自定义动作在LaunchConditions前执行 -->
<InstallExecuteSequence>
  <Custom Action="ResolveCpuArchitecture" Before="LaunchConditions" />
</InstallExecuteSequence>
<InstallUISequence>
  <Custom Action="ResolveCpuArchitecture" Before="LaunchConditions" />
</InstallUISequence>

<?if $(sys.BUILDARCH) = x86 ?>
<Property Id="TargetArchitecture" Value="X86" />
<LaunchCondition Condition="CpuArchitecture = TargetArchitecture OR NOT VersionNT64" Message="!(loc.UnsupportedPlatformMessage)" />
<?endif?>

<?if $(sys.BUILDARCH) = x64 ?>
<Property Id="TargetArchitecture" Value="AMD64" />
<LaunchCondition Condition="CpuArchitecture = TargetArchitecture" Message="!(loc.UnsupportedPlatformMessage)" />
<?endif?>

<?if $(sys.BUILDARCH) = arm64 ?>
<Property Id="TargetArchitecture" Value="ARM64" />
<LaunchCondition Condition="CpuArchitecture = TargetArchitecture" Message="!(loc.UnsupportedPlatformMessage)" />
<?endif?>

<!-- 优先读取真实架构，不存在则回退 -->
<CustomAction Id="ResolveCpuArchitecture" Property="CpuArchitecture" Value="[%PROCESSOR_ARCHITEW6432]" />
<SetProperty Id="CpuArchitecture" Value="[%PROCESSOR_ARCHITECTURE]" After="ResolveCpuArchitecture">NOT CpuArchitecture</SetProperty>

内容的提问来源于stack exchange，提问作者Rimas Kudelis