Update installer to use 7z format for archives and include installed size property

Author: PierreRaybaut

scripts/build_installer.bat

@@ -33,10 +33,10 @@ call %FUNC% DeployPython
 @REM Create archive of Python environment
 @REM ===========================================================================
 echo Creating archive of Python environment...
-set ARCHIVE_PATH=%ROOTPATH%\dist\%CI_DST%-files.zip
+set ARCHIVE_PATH=%ROOTPATH%\dist\%CI_DST%-files.7z
 if exist "%ARCHIVE_PATH%" ( del /q "%ARCHIVE_PATH%" )
 pushd %ROOTPATH%\dist\%CI_DST%
-"C:\Program Files\7-Zip\7z.exe" a -tzip -mx=1 "%ARCHIVE_PATH%" *
+"C:\Program Files\7-Zip\7z.exe" a -t7z -m0=bzip2 -mx=1 -mmt=on "%ARCHIVE_PATH%" *
 popd
 echo Archive created: %ARCHIVE_PATH%
 

wix/generic-DataLab-WinPython.wxs

@@ -9,18 +9,19 @@
         <WixVariable Id="WixUIBannerBmp" Value=".\wix\banner.bmp" />
         <MediaTemplate EmbedCab="yes" CompressionLevel="none" />
         <Property Id="MSIFASTINSTALL" Value="2" />
+        <Property Id="ARPSIZE" Value="{installed_size}" />
         <ui:WixUI Id="WixUI_InstallDir" InstallDirectory="INSTALLFOLDER"/>
         <Feature Id="ProductFeature" Title="DataLab-WinPython" Level="1">
             <ComponentGroupRef Id="ProductComponents" />
         </Feature>
 
         <!-- Custom actions for archive extraction using bundled 7za.exe with hidden VBScript wrappers -->
         <CustomAction Id="ExtractArchive" Directory="INSTALLFOLDER" Execute="deferred" Impersonate="no" HideTarget="yes"
-                      ExeCommand="&quot;[System64Folder]wscript.exe&quot; &quot;[INSTALLFOLDER]extract.vbs&quot; &quot;[INSTALLFOLDER]7za.exe&quot; &quot;[INSTALLFOLDER]DataLab-WinPython-files.zip&quot; &quot;[INSTALLFOLDER]&quot;"
+                      ExeCommand="&quot;[System64Folder]wscript.exe&quot; &quot;[INSTALLFOLDER]extract.vbs&quot; &quot;[INSTALLFOLDER]7za.exe&quot; &quot;[INSTALLFOLDER]DataLab-WinPython-files.7z&quot; &quot;[INSTALLFOLDER]&quot;"
                       Return="check" />
 
         <CustomAction Id="DeleteArchive" Directory="INSTALLFOLDER" Execute="deferred" Impersonate="no" HideTarget="yes"
-                      ExeCommand="&quot;[System64Folder]cmd.exe&quot; /c &quot;del /q &quot;[INSTALLFOLDER]DataLab-WinPython-files.zip&quot; &amp; del /q &quot;[INSTALLFOLDER]7za.exe&quot; &amp; del /q &quot;[INSTALLFOLDER]extract.vbs&quot;&quot;"
+                      ExeCommand="&quot;[System64Folder]cmd.exe&quot; /c &quot;del /q &quot;[INSTALLFOLDER]DataLab-WinPython-files.7z&quot; &amp; del /q &quot;[INSTALLFOLDER]7za.exe&quot; &amp; del /q &quot;[INSTALLFOLDER]extract.vbs&quot;&quot;"
                       Return="ignore" />
 
         <CustomAction Id="CleanupOnUninstall" Directory="INSTALLFOLDER" Execute="deferred" Impersonate="no" HideTarget="yes"
@@ -56,7 +57,7 @@
 
             <!-- Archive component -->
             <Component Id="PC_Archive" Directory="INSTALLFOLDER" Guid="a1b2c3d4-e5f6-4a5b-8c9d-0e1f2a3b4c5d">
-                <File Id="ArchiveFile" Name="DataLab-WinPython-files.zip" Source="{archive_path}" KeyPath="yes" />
+                <File Id="ArchiveFile" Name="DataLab-WinPython-files.7z" Source="{archive_path}" KeyPath="yes" />
             </Component>
 
             <!-- Launcher executables component -->

wix/makewxs.py

@@ -48,7 +48,7 @@ def make_wxs(product_name: str, version: str) -> None:
     wix_dir = osp.abspath(osp.dirname(__file__))
     proj_dir = osp.abspath(osp.join(wix_dir, os.pardir))
     dist_dir = osp.join(proj_dir, "dist", product_name)
-    archive_path = osp.join(proj_dir, "dist", f"{product_name}-files.zip")
+    archive_path = osp.join(proj_dir, "dist", f"{product_name}-files.7z")
     wxs_path = osp.join(wix_dir, f"generic-{product_name}.wxs")
     output_path = osp.join(wix_dir, f"{product_name}-{version}.wxs")
 
@@ -62,12 +62,24 @@ def make_wxs(product_name: str, version: str) -> None:
     # Get archive size for statistics
     archive_size_mb = osp.getsize(archive_path) / (1024 * 1024)
 
+    # Calculate actual installed size (extracted files) in KB for ARPSIZE
+    total_size_bytes = 0
+    for root, dirs, files in os.walk(dist_dir):
+        for filename in files:
+            filepath = osp.join(root, filename)
+            if osp.exists(filepath):
+                total_size_bytes += osp.getsize(filepath)
+    installed_size_kb = int(total_size_bytes / 1024)
+
     # Count files in dist directory for statistics
     total_files = sum(len(files) for _, _, files in os.walk(dist_dir))
 
     print("Archive-based installer mode:")
     print(f"  Archive: {osp.basename(archive_path)}")
     print(f"  Archive size: {archive_size_mb:.1f} MB")
+    print(
+        f"  Installed size: {installed_size_kb / 1024:.1f} MB ({installed_size_kb} KB)"
+    )
     print(f"  Total files archived: {total_files}")
     print("  Components in MSI: ~15 (executables + archive + cleanup)")
 
@@ -77,7 +89,8 @@ def make_wxs(product_name: str, version: str) -> None:
 
     # Replace version placeholder
     wxs = wxs.replace("{version}", version)
-    wxs = wxs.replace("{archive_path}", f"dist\\{product_name}-files.zip")
+    wxs = wxs.replace("{archive_path}", f"dist\\{product_name}-files.7z")
+    wxs = wxs.replace("{installed_size}", str(installed_size_kb))
 
     with open(output_path, "w", encoding="utf-8") as fd:
         fd.write(wxs)