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|
{
config,
lib,
pkgs,
...
}:
with lib; {
nixfiles.modules = {
ark.enable = true;
wireguard.client.enable = true;
syncthing.enable = true;
openssh.server.enable = true;
games = {
lutris.enable = true;
minecraft.client.enable = true;
steam.enable = true;
};
android.enable = true;
bluetooth.enable = true;
discord.enable = true;
libvirtd.enable = true;
qutebrowser.enable = true;
mpd.enable = true;
};
hm = {
home.packages = with pkgs; [obs-studio];
programs = {
# NOTE This produces very poor performance even though RX 6750 XT should
# handle VA-API hardware decoding for all major formats (including AV1) just
# fine.
firefox.profiles.default.settings."media.ffmpeg.vaapi.enabled" = false;
# Mostly just placebo. :^)
mpv.config = {
hwdec = "vdpau";
vo = "gpu";
profile = "gpu-hq";
};
};
};
# Usually stuff that is going to be compiled on this machine is going to have
# parallelisation support enabled, so we will make sure that all cores are
# utilised and limit the job queue to one.
nix.extraOptions = ''
keep-going = true
max-jobs = 1
cores = 32
'';
boot = {
# TODO Override Xanmod kernel to support ZFS. This probably will require
# some patching and whatnot.
kernelPackages = config.boot.zfs.package.latestCompatibleLinuxPackages;
kernelParams = [
# Silence benign MCE errors:
# ```
# mce: [Hardware Error]: CPU 1: Machine Check: 0 Bank 29: ffffffffffffffff
# mce: [Hardware Error]: TSC 0 MISC ff1fffffffffffff SYND ffffffffffffffff IPID ffffffffffffffff
# mce: [Hardware Error]: PROCESSOR 2:a60f12 TIME 1669988017 SOCKET 0 APIC 2 microcode a601201
# ```
"mce=nobootlog"
# Required for Hogwats Legacy.
"clearcpuid=514"
];
# The boot drive is Samsung SSD 980 PRO 2TB.
initrd.kernelModules = ["nvme"];
zfs.extraPools = ["vdata"];
};
# Filesystem creation:
# ```
# mkfs.vfat -F 32 -l nixos-boot /dev/nvmeXnYpZ
#
# zpool create
# -o ashift=12
# -o autotrim=on
# -O acltype=posixacl
# -O xattr=sa
# -O compression=zstd
# -O mountpoint=none
# nixos
# /dev/nvmeXnYpZ
#
# zfs create
# nixos/root
#
# zfs create
# -o encryption=aes-256-gcm
# -o keyformat=passphrase
# -o mountpoint=legacy
# nixos/root/ark
#
# zfs create
# -o mountpoint=legacy
# nixos/root/nix
# ```
fileSystems = {
"/" = {
device = "none";
fsType = "tmpfs";
options = ["size=8G" "mode=755"];
};
"/boot" = {
device = "/dev/disk/by-uuid/1363-02E6";
fsType = "vfat";
};
"/nix" = {
device = "nixos/root/nix";
fsType = "zfs";
options = ["noatime"];
};
${config.ark.path} = {
device = "nixos/root/ark";
fsType = "zfs";
neededForBoot = true; # Required by impermanence.
};
# Required[1] when using impermanence with agenix. Filesystem itself is
# defined as an `ark.directory` in `nixos/common/users.nix`.
#
# [1]: https://github.com/ryantm/agenix/issues/45#issuecomment-847852593
# [1]: https://github.com/nix-community/impermanence/issues/22
# [1]: https://github.com/NixOS/nixpkgs/pull/86967#pullrequestreview-667929259
"/home/${my.username}" = {
depends = [config.ark.path];
neededForBoot = true;
};
};
# No swap space is declared here because the system already has 128Gb of RAM. :^)
# I've only manage to hit around 100Gb mark when running large
# computations/compiling something big. Pretty sure that a hefty chunk of it
# was just residual cache and it wouldn't make me get to OOM situations.
}
|
