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print info during boot
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@ -5,6 +5,8 @@
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./dns.nix
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./dns.nix
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# Nix garbage collection.
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# Nix garbage collection.
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./nix-gc.nix
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./nix-gc.nix
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# Display contact information during boot.
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./initrd-contact-info.nix
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];
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];
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# Firmware.
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# Firmware.
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119
modules/initrd-contact-info.nix
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119
modules/initrd-contact-info.nix
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# Display contact information during boot. https://discourse.nixos.org/t/display-contact-info-in-nixos-boot-stage-1/38118/4
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{ config, pkgs, lib, ... }:
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let
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contact_name = "Daniel Langbein";
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# TODO: move phone number to secret file
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contact_phone = "+49 xxx yyy";
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contact_mail = "daniel@systemli.org";
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# https://wiki.nixos.org/wiki/Shell_Scripts
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contact-info-str = pkgs.stdenv.mkDerivation rec {
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name = "Contact information string";
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# disable unpackPhase etc
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phases = "buildPhase";
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builder = pkgs.writeShellScript "builder.sh" ''
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set -eu -o pipefail
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echo -e "If found, please contact:\n${contact_name}\n${contact_phone}\n${contact_mail}" \
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| cowsay --bold --aurora -f dragon > $out
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'';
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nativeBuildInputs = with pkgs; [ coreutils neo-cowsay ];
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PATH = lib.makeBinPath nativeBuildInputs;
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};
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contact-info-img = pkgs.stdenv.mkDerivation rec{
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name = "Contact information image";
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nativeBuildInputs = with pkgs; [ imagemagick liberation_ttf ];
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phases = "installPhase";
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# magick add label: https://imagemagick.org/Usage/text/#label
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# magick font list: magick -list font | grep Font
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installPhase = ''
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set -eu -o pipefail
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mkdir -p $out
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#export XDG_CACHE_HOME="$out/.cache"
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magick -background black -fill 'hsb(120, 255, 63.75)' -font ${pkgs.liberation_ttf}/share/fonts/truetype/LiberationSans-Regular.ttf -pointsize 92 'label:If found, please contact:\n${contact_name}\n${contact_phone}\n${contact_mail}' $out/img.png
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'';
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};
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in
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{
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# Plymouth boot splash screen.
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# TODO: Only on graphical installations!
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#
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# To see the splash screen. https://wiki.archlinux.org/title/Plymouth#Installation
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#boot.kernelParams = [ "splash" ];
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#
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boot.plymouth = lib.mkIf (config.boot.initrd.systemd.enable) {
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enable = true;
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#theme = "breeze";
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logo = "${contact-info-img}/img.png";
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};
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# Print contact info as text during boot.
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boot.initrd.preDeviceCommands = lib.mkIf (! config.boot.initrd.systemd.enable) ''
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cat <<'EOF'
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${builtins.readFile contact-info-str}
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EOF
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'';
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# TODO: cleanup
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#
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# TODO: systemd service output is not displayed during boot. onyl [info] service xxx started
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#
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# # https://github.com/oxalica/nixpkgs/blob/3562c1d5c6ff868924fe95ba7b51344f3c141311/nixos/modules/config/console.nix#L158
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# boot.initrd.systemd.storePaths = [
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# "${config.boot.initrd.systemd.package.kbd}/bin/some-foo-package"
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# ];
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#
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# boot.initrd.systemd.services."If-found-please-send-email-to___${mail}___" = lib.mkIf (config.boot.initrd.systemd.enable) {
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# description = "Display part of the contact information inside service name";
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# wantedBy = [ "initrd.target" ];
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# after = [ "systemd-vconsole-setup.service" ];
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# before = [ "cryptsetup-pre.target" "local-fs-pre.target" ];
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# unitConfig.DefaultDependencies = "no";
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# serviceConfig.Type = "oneshot";
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# script = ''
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# wall TESTING-SOMETHING-OUT
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# '';
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# };
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#
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# # Soruces:
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# # - https://discourse.nixos.org/t/zfs-rollback-not-working-using-boot-initrd-systemd/37195/3
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# # - https://github.com/cole-h/nixos-config/blob/26f77d5d24e5859a1bb690cff63371d1ebf7d707/hosts/nixos/scadrial/modules/boot/remote-unlock.nix#L57-L69
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# boot.initrd.systemd.services."contact-info" = lib.mkIf (config.boot.initrd.systemd.enable) {
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# description = "Display contact information";
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# wantedBy = [
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# "initrd.target"
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# ];
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# after = [
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# "systemd-vconsole-setup.service"
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# ];
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# before = [
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# # Flowchart displaying the ordering of targets: https://www.freedesktop.org/software/systemd/man/latest/bootup.html
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# # cryptsetup-pre.target and local-fs-pre.target don't depend on each other but are instead orthogonal
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#
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# # This passive target unit may be pulled in by services that want to run before any encrypted block device is set up.
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# # https://www.freedesktop.org/software/systemd/man/systemd.special#cryptsetup-pre.target
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# "cryptsetup-pre.target"
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#
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# # This target unit is automatically ordered before all local mount points marked with auto.
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# # https://www.freedesktop.org/software/systemd/man/systemd.special#local-fs-pre.target
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# "local-fs-pre.target"
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#
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# # If the root device can be mounted at /sysroot, the sysroot.mount unit becomes active and initrd-root-fs.target is reached.
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# # https://man7.org/linux/man-pages/man7/bootup.7.html
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# #"sysroot.mount"
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# ];
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## path = with pkgs; [
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## neo-cowsay
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## ];
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# unitConfig.DefaultDependencies = "no";
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# serviceConfig.Type = "oneshot";
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# script = ''
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# cat <<'EOF'
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# ${builtins.readFile contact-info-str}
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# EOF
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# '';
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# };
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}
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