remove wimsplit, do imageSelection by name

wfvm/autounattend.nix

@@ -15,6 +15,7 @@
 , impureShellCommands ? []
 , driveLetter ? "D:"
 , efi ? true
+, imageSelection ? "Windows 10 Pro"
 , ...
 }:
 
@@ -203,8 +204,8 @@ let
               </InstallTo>
               <InstallFrom>
                 <MetaData wcm:action="add">
-                  <Key>/IMAGE/INDEX</Key>
-                  <Value>1</Value>
+                  <Key>/IMAGE/NAME</Key>
+                  <Value>${imageSelection}</Value>
                 </MetaData>
               </InstallFrom>
             </OSImage>
@@ -302,7 +303,7 @@ let
         </component>
       </settings>
 
-      <cpi:offlineImage cpi:source="wim:c:/wim/windows-10/install.wim#Windows 10 Enterprise LTSC 2019 Evaluation" xmlns:cpi="urn:schemas-microsoft-com:cpi" />
+       <cpi:offlineImage cpi:source="wim:c:/wim/windows-10/install.wim#${imageSelection}" xmlns:cpi="urn:schemas-microsoft-com:cpi" />
     </unattend>
   '';
 

wfvm/win.nix

@@ -6,7 +6,7 @@
 , installCommands ? []
 , users ? {}
 # autounattend always installs index 1, so this default is backward-compatible
-, imageSelection ? "1"
+, imageSelection ? "Windows 10 Pro"
 , efi ? true
 , ...
 }@attrs:
@@ -117,19 +117,9 @@ let
         mkdir -p win/nix-win
         7z x -y ${windowsIso} -owin
 
-        # Extract desired variant from install.wim
-        # This is useful if the install.wim contains multiple Windows
-        # versions (e.g., Home, Pro, ..), because the autounattend file
-        # will always select index 1. With this mechanism, a variant different
-        # from the first one can be automatically selected.
-        # imageSelection can be either an index (1-N) or the image name
-        # wiminfo can list all images contained in a given WIM file
-        wimexport win/sources/install.wim "${imageSelection}" win/sources/install_selected.wim
-        rm win/sources/install.wim
-
         # Split image so it fits in FAT32 partition
-        wimsplit win/sources/install_selected.wim win/sources/install.swm 4096
-        rm win/sources/install_selected.wim
+        wimsplit win/sources/install.wim win/sources/install.swm 4090
+        rm win/sources/install.wim
 
         cp ${autounattend.autounattendXML} win/autounattend.xml