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72 lines
1.7 KiB
Nix
72 lines
1.7 KiB
Nix
2 months ago
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# makes for nice-behaving pve-guests:
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# - qemu-guest-agent & drivers
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# - support for serial output (but graphic output should still work the same)
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# works for installers as well (does NOT include common.nix)
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{
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lib,
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modulesPath,
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pkgs,
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...
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}:
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let
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# Based on https://unix.stackexchange.com/questions/16578/resizable-serial-console-window
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resize = pkgs.writeShellScriptBin "resize" ''
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export PATH="${lib.getBin pkgs.coreutils}/bin"
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if [ ! -t 0 ]; then
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# not a interactive...
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exit 0
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fi
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TTY="$(tty)"
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if [[ "$TTY" != /dev/ttyS* ]] && [[ "$TTY" != /dev/ttyAMA* ]] && [[ "$TTY" != /dev/ttySIF* ]]; then
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# probably not a known serial console, we could make this check more
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# precise by using `setserial` but this would require some additional
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# dependency
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exit 0
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fi
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old=$(stty -g)
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stty raw -echo min 0 time 5
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printf '\0337\033[r\033[999;999H\033[6n\0338' > /dev/tty
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IFS='[;R' read -r _ rows cols _ < /dev/tty
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stty "$old"
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stty cols "$cols" rows "$rows"
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'';
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in
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{
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imports = [
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# from nixpkgs
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"${modulesPath}/profiles/qemu-guest.nix"
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];
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config = {
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boot = {
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# TODO probably until https://github.com/NixOS/nixpkgs/issues/340086
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initrd.availableKernelModules = lib.singleton "virtio_iommu";
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kernelParams = [
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# show kernel log on serial
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"console=ttyS0,115200"
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# but use virtual tty as /dev/console (last entry)
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"console=tty0"
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];
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};
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environment.systemPackages = [ resize ];
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services = {
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qemuGuest.enable = true;
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};
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systemd.services."serial-getty@".environment.TERM = "xterm-256color";
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time.hardwareClockInLocalTime = false; # just to make sure
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};
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}
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