try to avoid build installer issue:

WixToolset.UI.wixext : warning WIX6101: Could not find expected package root folder wixext6. Ensure WixToolset.UI.wixext/7.0.0-rc.1 is compatible with WiX v6.
Compiling PythonScript installer
wix.exe : error WIX0144: The extension 'WixToolset.UI.wixext' could not be found. Checked paths: WixToolset.UI.wixext
Error!

Author: chcg

.github/workflows/CI_build.yml

@@ -48,5 +48,5 @@ jobs:
            $env:PYTHONBUILDDIR_X64='${{ github.workspace }}\packages\python.3.14.3\tools'
            $env:PYTHONBUILDDIR='${{ github.workspace }}\packages\pythonx86.3.14.3\tools'
            Rename-Item -Path ".\buildPaths.bat.orig" -NewName "buildPaths.bat"
-           dotnet tool install --global wix
+           dotnet tool install --global wix --version 6.0.2
            .\buildAll.bat ${{ matrix.build_platform }}

appveyor.yml

@@ -9,11 +9,12 @@ environment:
 platform:
     - x64
     - Win32
+    - ARM64
 
 configuration:
     - Release
     - Debug
-    # see https://www.boost.org/doc/libs/1_87_0/libs/python/doc/html/building/python_debugging_builds.html
+    # see https://www.boost.org/doc/libs/1_90_0/libs/python/doc/html/building/python_debugging_builds.html
     # not available by boost nuget package
     #- PythonDebug
 
@@ -25,6 +26,9 @@ install:
     - if "%platform%"=="Win32" set archi=x86
     - if "%platform%"=="Win32" set platform_input=Win32
 
+    - if "%platform%"=="ARM64" set archi=arm64
+    - if "%platform%"=="ARM64" set platform_input=ARM64
+
     - if "%PlatformToolset%"=="v143" call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat" %archi%
 
     - nuget restore "%APPVEYOR_BUILD_FOLDER%"\PythonScript\project\packages.config -PackagesDirectory "%APPVEYOR_BUILD_FOLDER%"\packages
@@ -36,15 +40,16 @@ build_script:
 
 after_build:
     - if "%configuration%"=="Release" cd "%APPVEYOR_BUILD_FOLDER%"\docs
-    - if "%configuration%"=="Release" set PATH=C:\Python312-x64;C:\Python312-x64\Scripts;%PATH%
+    - if "%configuration%"=="Release" set PATH=C:\Python314-x64;C:\Python314-x64\Scripts;%PATH%
     - if "%configuration%"=="Release" python -m pip install --upgrade pip
     - if "%configuration%"=="Release" pip install -U sphinx
     - if "%configuration%"=="Release" make.bat html
 
     - cd "%APPVEYOR_BUILD_FOLDER%"\installer
     - dotnet tool install --global wix
-    - if "%platform_input%"=="x64" SET PYTHONBUILDDIR_X64="%APPVEYOR_BUILD_FOLDER%"\packages\python.3.12.10\tools
-    - if "%platform_input%"=="Win32" SET PYTHONBUILDDIR="%APPVEYOR_BUILD_FOLDER%"\packages\pythonx86.3.12.10\tools
+    - if "%platform_input%"=="ARM64" SET PYTHONBUILDDIR_X64="%APPVEYOR_BUILD_FOLDER%"\packages\python.3.14.3\tools
+    - if "%platform_input%"=="x64" SET PYTHONBUILDDIR_X64="%APPVEYOR_BUILD_FOLDER%"\packages\python.3.14.3\tools
+    - if "%platform_input%"=="Win32" SET PYTHONBUILDDIR="%APPVEYOR_BUILD_FOLDER%"\packages\pythonx86.3.14.3\tools
     - copy "%APPVEYOR_BUILD_FOLDER%"\installer\buildPaths.bat.orig "%APPVEYOR_BUILD_FOLDER%"\installer\buildPaths.bat
     - if "%configuration%"=="Release" buildAll.bat %platform_input%
     - cd "%APPVEYOR_BUILD_FOLDER%"
@@ -59,6 +64,13 @@ after_build:
         }
 
         if ($($env:APPVEYOR_REPO_TAG) -eq "true" -and $env:CONFIGURATION -eq "Release" -and $env:PLATFORMTOOLSET -eq "v143") {
+            if($env:PLATFORM_INPUT -eq "ARM64"){
+                $ZipFileName = "PythonScript_$($env:APPVEYOR_REPO_TAG_NAME)_arm64.zip"
+                7z a $ZipFileName $env:APPVEYOR_BUILD_FOLDER\$env:PLATFORM_INPUT\$env:CONFIGURATION\*.dll
+                Push-AppveyorArtifact $ZipFileName -FileName $ZipFileName
+                Get-ChildItem .\installer\build\**\*.msi | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name -DeploymentName releases}
+                Get-ChildItem .\installer\build\**\*.zip | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name -DeploymentName releases}
+            }
             if($env:PLATFORM_INPUT -eq "x64"){
                 $ZipFileName = "PythonScript_$($env:APPVEYOR_REPO_TAG_NAME)_x64.zip"
                 7z a $ZipFileName $env:APPVEYOR_BUILD_FOLDER\$env:PLATFORM_INPUT\$env:CONFIGURATION\*.dll

installer/buildInstaller.bat

@@ -51,7 +51,7 @@ SET /p PYTHONSCRIPTVERSION= < %INST_TEMP_DIR%\version.txt
 
 cd ..\packages
 echo add UI extension globally
-wix extension add -g WixToolset.UI.wixext
+wix extension add -g WixToolset.UI.wixext/6.0.2
 wix extension list -g
 cd ..\installer