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windows: seal mode -- generic OOBE-deferred base, per-VM data on a config CD

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A sealed image bakes no per-VM data. generalize.nix gains a gated
configMedium flag (false path byte-identical, so the shared macOS
generalize path is untouched): the baked answer file stays generic and
the target's first boot reads hostname/static-IP/timezone/tint off a
small removable CD via a finder (vmix-load-config.cmd) + applier
(vmix-apply-config.ps1), with the static-IP script dot-sourcing the same
config. templates.seal is a thin preset (delayOobeRun + configMedium +
D:\Users profiles + a data disk); images gain a .seal leaf next to
.generalize; makeConfigMedium renders the per-VM ISO.

So one sealed store path is shared by every VM, each mints its own SID
on first boot and builds the whole profile on D:, and only a cheap ISO
is per-VM. Also folds in the delayOobeRun reconcile: extraDisk (and the
audit-mode data-disk init) are gated off under deferral, so a sealed
image ships with no throwaway `data` output -- the target's specialize
formats the host zvol instead.

vms: disks.config.file attaches the config medium as a second CD-ROM.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0117qMyjpuXsjpVAcpJbFD8g
This commit is contained in:
Git Sagar 2026-09-16 13:01:12 -03:00
parent c40f4460e3
commit 702f723e6d
6 changed files with 173 additions and 15 deletions
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10
nixos/vms/submoduleOptions.nix
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@ -189,6 +189,16 @@ with lib;
description = "Path to the ISO file. Can be a Nix store path or a string path to a local file.";
default = null;
};
disks.config.file = mkOption {
type = types.nullOr (types.either types.path types.str);
default = null;
description = ''
A small read-only config medium attached as a second CD-ROM. For Windows
sealed images (templates.seal) this is the per-VM ISO from
vmixLib.windows.makeConfigMedium, carrying hostname/static-IP/etc. that
the image's baked first-boot scripts consume. Null to attach nothing.
'';
};
disks.add = mkOption {
default = {};
type = types.attrsOf (types.submodule {