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nixfiles/hosts/zinc/initrd.nix

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{ config, pkgs, lib, ... }:
with lib;
let
configure_network = pkgs.writeScriptBin "configure-network" ''
ifdisplay=""
while true; do
ifdisplay_new=$(ipconfig -t 10 all)
ipconfig_status=$?
# Only show network config if something changes
if [[ "$ifdisplay" != "$ifdisplay_new" ]]; then
ifdisplay=$ifdisplay_new
echo
echo "$ifdisplay"
echo
fi
# Wait a little before checking again
if [[ $ipconfig_status == 0 ]]; then
sleep 5
fi
done
'';
in {
boot.initrd.network.enable = true;
boot.initrd.network.ssh = {
enable = true;
port = 1022;
#shell = "/bin/cryptsetup-askpass";
authorizedKeys = config.users.users.clerie.openssh.authorizedKeys.keys;
hostKeys = [
"/var/src/secrets/initrd/ssh_host_ed25519_key"
];
};
boot.initrd.extraFiles."/root/.ash_history".source = pkgs.writeText ".ash_history" ''
cryptsetup-askpass
'';
boot.initrd.kernelModules = [
"igc" # integrated rj45 network interface
"cdc_ether" # external 5G modem via usb
];
boot.initrd.extraUtilsCommands = ''
copy_bin_and_libs ${configure_network}/bin/configure-network
'';
boot.initrd.network.postCommands = mkBefore ''
configure-network &
'';
boot.initrd.postMountCommands = mkBefore ''
pkill -x configure-network
# Override the previously set interfaces with the ones that really exist
ifaces=$(ip -o link show | grep "link/ether" | cut -d: -f2 | xargs -n 1)
'';
boot.initrd.network.wireguard = {
enable = true;
ipv6s = [ "2a01:4f8:c0c:15f1::8110/128" ];
ipv4s = [ "10.20.30.110/32" ];
privateKeyFile = "/var/src/secrets/wireguard/wg-initrd";
};
}