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win: Allow for selection specific image

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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.

The default case is index 1, which has the same effect as before, with
the possibility of having a slightly smaller install.wim file because
all unwanted variants are discarded.
This commit is contained in:
Markus Partheymüller 2021-02-25 10:06:54 +01:00
parent 90cc7b14a4
commit e8232ab89a
1 changed files with 14 additions and 2 deletions
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wfvm/win.nix
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@ -5,6 +5,8 @@
, impureMode ? false
, installCommands ? []
, users ? {}
# autounattend always installs index 1, so this default is backward-compatible
, imageSelection ? "1"
, ...
}@attrs:
@ -106,10 +108,20 @@ let
mkdir -p win/nix-win
7z x -y ${windowsIso} -owin
# Split image so it fits in FAT32 partition
wimsplit win/sources/install.wim win/sources/install.swm 3072
# Extract desired variant from install.wim
# This is useful if the install.wim contains multiple Windows
# versions (e.g., Home, Pro, ..), because the autounattend file
# will always select index 1. With this mechanism, a variant different
# from the first one can be automatically selected.
# imageSelection can be either an index (1-N) or the image name
# wiminfo can list all images contained in a given WIM file
wimexport win/sources/install.wim "${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 3072
rm win/sources/install_selected.wim
cp ${autounattend.autounattendXML} win/autounattend.xml
virt-make-fs --partition --type=fat win/ usbimage.img