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fix(live-iso): stop initrd GPU panic + clear install pointer on login

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- boot.initrd.kernelModules force-loaded amdgpu+radeon+nouveau+i915 in the
  live ISO, panicking on hosts where more than one driver matched the GPU.
  Move them to availableKernelModules so udev only loads what fits.
- Override services.getty.helpLine with a Nomarchy welcome that points at
  `sudo /etc/install.sh` (+ --dry-run / --resume variants). Replaces the
  upstream "NixOS" message.
- Ship installer/hardware-db.sh as /etc/hardware-db.sh so the installer's
  auto-detection works when invoked from the live ISO.
- Add live-ISO-only Hyprland exec-once: notify-send + an alacritty
  "Nomarchy Installer" terminal that prints the install commands. The
  graphical autologin user now sees a pointer instead of guessing how to
  start the install.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Bernardo Magri
2026-04-25 10:24:49 +01:00
parent e66537523a
commit bb435a47bb
2 changed files with 38 additions and 3 deletions
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9
flake.nix
View File

@@ -144,6 +144,15 @@
home-manager.users.nixos = {
imports = [ ./features ];
home.stateVersion = "25.11";
# Live-ISO-only welcome. Pops a notification a few seconds
# after the graphical session is up and opens a terminal
# parked at the installer command, so the user never has to
# hunt for it.
wayland.windowManager.hyprland.extraConfig = nixpkgs.lib.mkAfter ''
exec-once = sh -c 'sleep 3; notify-send -u critical -t 0 "Welcome to Nomarchy" "Run \`sudo /etc/install.sh\` in the open terminal — or \`--dry-run\` to preview."'
exec-once = sh -c 'sleep 4; alacritty --title "Nomarchy Installer" -e bash -lc "echo; echo \"Welcome to the Nomarchy live ISO.\"; echo; echo \" sudo /etc/install.sh # install\"; echo \" sudo /etc/install.sh --dry-run # preview only\"; echo \" sudo /etc/install.sh --resume # resume after an interrupt\"; echo; exec bash"'
'';
};
}
];

32
hosts/live-iso.nix
View File

@@ -25,9 +25,16 @@
users.users.nixos.extraGroups = [ "wheel" "video" "render" "audio" "networkmanager" ];
# Graphics support for live environment.
# `virtio` is a no-op on real hardware (no virtio-gpu PCI device) but lets
# the ISO render correctly when booted in QEMU via nomarchy-test-live-iso.
boot.initrd.kernelModules = [ "amdgpu" "radeon" "nouveau" "i915" "virtio_gpu" ];
#
# Force-loading every GPU driver in the initrd (amdgpu+radeon+nouveau+i915)
# panics most machines — only one of them can claim the GPU and the others
# explode. List them under `availableKernelModules` instead so udev only
# loads the one that matches the present hardware. We still force the AMD
# pair when Plymouth needs KMS early; `virtio_gpu` is auto-loaded when
# we're booted in QEMU via nomarchy-test-live-iso.
boot.initrd.availableKernelModules = [
"amdgpu" "radeon" "nouveau" "i915" "virtio_gpu"
];
services.xserver.videoDrivers = [ "amdgpu" "radeon" "nouveau" "modesetting" "fbdev" "virtio" ];
environment.etc."install.sh" = {
@@ -35,9 +42,28 @@
mode = "0755";
};
environment.etc."hardware-db.sh" = {
source = ../installer/hardware-db.sh;
mode = "0644";
};
environment.etc."disko-golden.nix" = {
source = ../installer/disko-golden.nix;
};
environment.etc."nomarchy".source = inputs.self;
# Override the upstream installer helpLine (says "NixOS", points nowhere
# useful for us). Shown on every TTY before login and again as the MOTD.
services.getty.helpLine = lib.mkForce ''
Welcome to the Nomarchy live environment.
To install Nomarchy: sudo /etc/install.sh
To preview the install: sudo /etc/install.sh --dry-run
To resume an interrupted run: sudo /etc/install.sh --resume
The graphical session autologins as 'nixos' (no password).
The 'nixos' and 'root' accounts have empty passwords.
'';
}