74 lines
1.9 KiB
Nix
74 lines
1.9 KiB
Nix
# This module defines a systemd service that automatically installs NixOS to the disk.
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# It is intended to be used in an installation ISO.
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# It expects `targetSystem` (the closure to install) and `diskoScript` (the partitioning script) to be passed as arguments.
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{
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config,
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lib,
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pkgs,
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inputs,
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hostName,
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hostPlatform,
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targetSystem,
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diskoScript,
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...
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}:
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{
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# Ensure the entire system closure and all dependencies are included in the ISO
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environment.systemPackages = [
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pkgs.git
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pkgs.bashInteractive
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pkgs.curl
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targetSystem
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];
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# Explicitly include the system closure in the ISO image to prevent any need to build or fetch
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isoImage.contents = [
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{
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source = targetSystem;
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target = "/system";
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}
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];
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nixpkgs.hostPlatform = hostPlatform;
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systemd.services.auto-install = {
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description = "Automatic NixOS install for ${hostName}";
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after = [
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"network-online.target"
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"systemd-udev-settle.service"
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];
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wants = [ "network-online.target" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Type = "oneshot";
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StandardOutput = "journal+console";
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StandardError = "journal+console";
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Environment = "PATH=/run/current-system/sw/bin";
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};
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script = ''
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echo "=== AUTO INSTALL START for ${hostName} ==="
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echo ">>> Running disko script..."
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${diskoScript}
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echo ">>> Copying system closure to target..."
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# Copy the entire system closure without substitution
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nix-store --store /mnt --load-db < <(nix-store --dump-db)
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nix-copy-closure --to /mnt ${targetSystem} 2>/dev/null || true
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echo ">>> Running nixos-install..."
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# Install with pre-built closure already in store
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nixos-install \
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--no-root-passwd \
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--root /mnt \
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--system ${targetSystem} \
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--option substitute false
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echo ">>> Done. Rebooting."
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systemctl reboot
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'';
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};
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}
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