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nixos/modules/pxe-boot/stage-installer-artifacts.nix
beatzaplenty e92aab617f
Check NixOS configurations / eval-hosts (pull_request) Successful in 10m42s
Rename PXE installer menu entry, add vanilla NixOS minimal netboot entry
The iPXE menu's "nixos" entry actually chain-loads this flake's own
custom auto-installer image, not a stock NixOS image — rename it to
"auto-installer" (label "NixOS Auto-Installer") so the menu says what it
boots, and set networking.hostName on netbootSystem to match, so the
generated system name (nixos-system-auto-installer-*) and staged
directory (/srv/pxe/http/auto-installer) agree with the menu entry too.

Add a second, genuinely vanilla NixOS minimal netboot image
(netbootMinimalSystem in flake.nix — nixpkgs' netboot-minimal.nix on its
own, none of modules/installer/common.nix's auto-installer wiring),
built from source the same way as the auto-installer image and exposed
as packages.x86_64-linux.pxe-minimal. Staged and menu-wired the same
way, as "nixos-minimal" (item, hostname, and directory all matching).

modules/pxe-boot/stage-installer-artifacts.nix is generalized to stage
both images via a shared rule-builder instead of one hardcoded set of
paths.

Verified: nix eval confirms both images' config.system.name matches
their menu entry/directory names, the pxe-boot host itself builds
clean with the new menu.ipxe, and the new pxe-minimal image was booted
directly under QEMU (kernel+initrd, no KVM) to a working login shell
with hostname nixos-minimal, no hang.
2026-07-21 22:45:25 +00:00

33 lines
1.5 KiB
Nix

{ netbootSystem, netbootMinimalSystem, ... }:
let
# config.system.build.kernel and .netbootRamdisk are directories, not the
# files themselves — nixpkgs' own system.build.kexecTree does the same
# ${...}/<file> dereference for the same reason.
mkStageRules = { dirName, system }:
let
inherit (system.config.system.boot.loader) kernelFile;
dir = "/srv/pxe/http/${dirName}";
in
[
# Declared here too (not just in build-types/pxe-boot.nix) so this
# module's C+ rules don't depend on cross-module list-merge ordering —
# tmpfiles' C type needs the target directory to already exist.
"d ${dir} 0755 root root -"
"C+ ${dir}/${kernelFile} 0644 root root - ${system.config.system.build.kernel}/${kernelFile}"
"C+ ${dir}/initrd 0644 root root - ${system.config.system.build.netbootRamdisk}/initrd"
"C+ ${dir}/netboot.ipxe 0644 root root - ${system.config.system.build.netbootIpxeScript}/netboot.ipxe"
];
in
{
# Builds this flake's own installer netboot image (the same one
# `nix build .#pxe` produces) plus the vanilla NixOS minimal netboot image
# (`nix build .#pxe-minimal`), and stages both where menu.ipxe's
# :auto-installer / :nixos-minimal entries expect them, so the pxe-boot
# host is self-contained — no manual operator step to populate
# /srv/pxe/http after deploy.
systemd.tmpfiles.rules =
mkStageRules { dirName = "auto-installer"; system = netbootSystem; }
++ mkStageRules { dirName = "nixos-minimal"; system = netbootMinimalSystem; };
}