dotfiles/system/hosts/nixmsi.nix

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{ config, lib, pkgs, ... }:
let
cryptroot = "/dev/disk/by-uuid/f4edc0df-b50b-42f6-94ed-1c8f88d6cdbb";
encPart = "/dev/disk/by-uuid/ce6ccdf0-7b6a-43ae-bfdf-10009a55041a";
efiPart = "/dev/disk/by-uuid/D77D-8CE0";
in {
system.stateVersion = "22.11";
### SECTION 1: HARDWARE/BOOT PARAMETERS ###
boot = {
initrd = {
availableKernelModules = [ "nvme" "xhci_pci" ];
# insert crypto_keyfile into initrd so that grub can tell the kernel the
# encryption key once I unlock the /boot partition
secrets."/crypto_keyfile.bin" = "/boot/initrd/crypto_keyfile.bin";
luks.devices."cryptroot" = {
device = encPart;
# idk whether this is needed but it works
preLVM = true;
# see https://asalor.blogspot.de/2011/08/trim-dm-crypt-problems.html before enabling
allowDiscards = true;
# improve SSD performance
bypassWorkqueues = true;
keyFile = "/crypto_keyfile.bin";
};
};
resumeDevice = cryptroot;
kernelParams = [
"resume=/@swap/swapfile"
# resume_offset = $(btrfs inspect-internal map-swapfile -r path/to/swapfile)
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"resume_offset=533760"
"fbcon=font:TER16x32"
];
cleanTmpDir = true;
loader = {
grub = {
enable = true;
enableCryptodisk = true;
efiSupport = true;
# nodev = disable bios support
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device = "nodev";
gfxmodeEfi = "1920x1080";
gfxmodeBios = "1920x1080";
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};
efi.canTouchEfiVariables = true;
efi.efiSysMountPoint = "/boot/efi";
};
kernel.sysctl = {
"vm.dirty_ratio" = 4;
"vm.dirty_background_ratio" = 2;
"vm.swappiness" = 40;
};
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kernelPackages = pkgs.linuxPackages_zen;
};
nixpkgs.config.allowUnfreePredicate = pkg: (lib.getName pkg) == "steam-original";
hardware = {
steam-hardware.enable = true;
video.hidpi.enable = true;
enableRedistributableFirmware = true;
};
# see common/vfio.nix
vfio.enable = true;
vfio.pciIDs = [ "1002:73df" "1002:ab28" ];
vfio.libvirtdGroup = [ "user" ];
vfio.lookingGlass.ivshmem = [{ owner = "user"; }];
fileSystems = let
device = cryptroot;
fsType = "btrfs";
# max compression! my cpu is pretty good anyway
compress = "compress=zstd:15";
discard = "discard=async";
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in {
"/" = { inherit device fsType;
options = [ discard compress "subvol=@" ]; };
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"/nix" = { inherit device fsType;
options = [ discard compress "subvol=@nix" "noatime" ]; };
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"/swap" = { inherit device fsType;
options = [ discard "subvol=@swap" "noatime" ]; };
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"/home" = { inherit device fsType;
options = [ discard compress "subvol=@home" ]; };
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"/.snapshots" =
{ inherit device fsType;
options = [ discard compress "subvol=@snapshots" ]; };
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"/boot/efi" =
{ device = efiPart;
fsType = "vfat"; };
};
swapDevices = [ { device = "/swap/swapfile"; } ];
### SECTION 2: SYSTEM CONFIG/ENVIRONMENT ###
i18n.defaultLocale = lib.mkDefault "en_US.UTF-8";
i18n.supportedLocales = lib.mkDefault [ "en_US.UTF-8/UTF-8" ];
networking.useDHCP = true;
# networking.firewall.enable = false;
networking.firewall.allowedTCPPorts = [ 27015 25565 7777 ];
# networking.firewall.allowedUDPPorts = [ ... ];
# networking.hostName = "nixmsi";
networking.wireless.iwd.enable = true;
#networking.networkmanager.enable = true;
services.mullvad-vpn.enable = true;
services.mullvad-vpn.package = pkgs.mullvad-vpn;
services.xserver = {
enable = true;
libinput.enable = true;
desktopManager.xterm.enable = false;
# I couldn't get lightdm to start sway, so let's just do this
displayManager.startx.enable = true;
windowManager.i3.enable = true;
};
programs.sway.enable = true;
programs.firejail.enable = true;
environment.systemPackages = with pkgs; [
vim
wget
git
];
services.dbus.enable = true;
security.polkit.enable = true;
services.printing.enable = true;
security.rtkit.enable = true;
services.pipewire = {
enable = true;
alsa.enable = true;
alsa.support32Bit = true;
pulse.enable = true;
jack.enable = true;
};
users.users.user = {
isNormalUser = true;
extraGroups = [ "networkmanager" "wheel" ];
};
nix = {
settings.allowed-users = [ "user" ];
package = pkgs.nixFlakes;
extraOptions = ''
experimental-features = nix-command flakes
'';
};
### RANDOM PATCHES ###
# System76 scheduler (not actually a scheduler, just a renice daemon) for improved responsiveness
services.dbus.packages = [ pkgs.system76-scheduler ];
systemd.services."system76-scheduler" = {
description = "Automatically configure CPU scheduler for responsiveness on AC";
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "dbus";
BusName= "com.system76.Scheduler";
ExecStart = "${pkgs.system76-scheduler}/bin/system76-scheduler daemon";
ExecReload = "${pkgs.system76-scheduler}/bin/system76-scheduler daemon reload";
};
};
environment.etc."system76-scheduler/assignments.ron".source =
lib.mkOptionDefault "${pkgs.system76-scheduler}/etc/system76-scheduler/assignments.ron";
environment.etc."system76-scheduler/config.ron".source =
lib.mkOptionDefault "${pkgs.system76-scheduler}/etc/system76-scheduler/config.ron";
environment.etc."system76-scheduler/exceptions.ron".source =
lib.mkOptionDefault "${pkgs.system76-scheduler}/etc/system76-scheduler/exceptions.ron";
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# I can't enable early KMS with VFIO, so this will have to do
# (amdgpu resets the font upon being loaded)
systemd.services."systemd-vconsole-setup2" = {
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
ExecStart = "${pkgs.systemd}/lib/systemd/systemd-vconsole-setup";
};
wantedBy = ["graphical.target"];
wants = ["multi-user.target"];
after = ["multi-user.target"];
};
# autologin once after boot
# --skip-login means directly call login instead of first asking for username
# (normally login asks for username too, but getty prefers to do it by itself for whatever reason)
services.getty.extraArgs = ["--skip-login"];
services.getty.loginProgram = with pkgs; writeScript "login-once" ''
#! ${bash}/bin/bash
LOCKFILE=/tmp/login-once.lock
if [ -f $LOCKFILE ]
then
exec ${shadow}/bin/login $@
else
${coreutils}/bin/touch $LOCKFILE
exec ${shadow}/bin/login -f user
fi
'';
# overlays
nixpkgs.overlays = [(self: super: with lib; with pkgs; {
system76-scheduler = rustPlatform.buildRustPackage {
pname = "system76-scheduler";
version = "unstable-2022-10-05";
src = fetchFromGitHub {
owner = "pop-os";
repo = "system76-scheduler";
rev = "25a45add4300eab47ceb332b4ec07e1e74e4baaf";
sha256 = "sha256-eB1Qm+ITlLM51nn7GG42bydO1SQ4ZKM0wgRl8q522vw=";
};
cargoPatches = [(pkgs.writeText "system76-scheduler-cargo.patch" ''
diff --git i/daemon/Cargo.toml w/daemon/Cargo.toml
index 0397788..fbd6202 100644
--- i/daemon/Cargo.toml
+++ w/daemon/Cargo.toml
@@ -33,7 +33,7 @@ clap = { version = "3.1.18", features = ["cargo"] }
# Necessary for deserialization of untagged enums in assignments.
[dependencies.ron]
git = "https://github.com/MomoLangenstein/ron"
-branch = "253-untagged-enums"
+rev = "a9c5444d74677716f4a8a00504fb1bedbde55156"
[dependencies.tracing-subscriber]
version = "0.3.11"
diff --git i/Cargo.lock w/Cargo.lock
index a782756..fe56c1f 100644
--- i/Cargo.lock
+++ w/Cargo.lock
@@ -788,7 +788,7 @@ dependencies = [
[[package]]
name = "ron"
version = "0.7.0"
-source = "git+https://github.com/MomoLangenstein/ron?branch=253-untagged-enums#a9c5444d74677716f4a8a00504fb1bedbde55156"
+source = "git+https://github.com/MomoLangenstein/ron?rev=a9c5444d74677716f4a8a00504fb1bedbde55156#a9c5444d74677716f4a8a00504fb1bedbde55156"
dependencies = [
"base64",
"bitflags",
'')];
cargoSha256 = "sha256-EzvJEJlJzCzNEJLCE3U167LkaQHzGthPhIJ6fp0aGk8=";
nativeBuildInputs = [ pkg-config ];
buildInputs = [ dbus ];
EXECSNOOP_PATH = "${bcc}/bin/execsnoop";
postInstall = ''
install -D -m 0644 data/com.system76.Scheduler.conf $out/etc/dbus-1/system.d/com.system76.Scheduler.conf
mkdir -p $out/etc/system76-scheduler
install -D -m 0644 data/*.ron $out/etc/system76-scheduler/
'';
meta = {
description = "System76 Scheduler";
homepage = "https://github.com/pop-os/system76-scheduler";
license = licenses.mpl20;
platforms = [ "i686-linux" "x86_64-linux" ];
};
};
})];
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}