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GNU AFFERO GENERAL PUBLIC LICENSE
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# Description
set of nixos modules to set better (opinionated) defaults
# Usage
You could clone this repo into /etc/nixos and add a submodule.
Or, add it as a flake input.
```nix
# This enables many of the defaults from this repository
nixowos.enable = true;
# extra switches
# enables the default set of graphical settings.
# for instance if plasma6 is enabled, enable kdeconnect too
nixowos.graphical.enable = true;
# enables steam with relevant ports opened,
# enables mangohud with a nice default config,
# and loads ntsync kernel module for (possibly) better performance
nixowos.graphical.games.enable = true;
# only if you have an nvidia card, of course
nixowos.graphical.nvidia.enable = true;
# installs better asian fonts,
# and sets up fcitx for japanese input
# (toggle with ctrl+alt+space)
nixowos.graphical.jp.enable = true;
# instead of using sddm, use a tiny script on login
# to run startplasma_wayland if running on /dev/tty1
# note: this doesn't automatically unlock kwallet
nixowos.plasma.startOnFirstTTY = true;
```
Many of the extra settings can be added to or overridden.
```nix
# this would replace the default config with a single setting,
# to only extract (save) audio.
# not recommended for a global config for obvious reasons.
nixowos.cli.yt-dlp.extraConfig = "--extract-audio";
```

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{
pkgs,
lib,
config,
...
}:
let
name = "cli";
cfg = config.nixowos.${name};
in
{
imports = [
./yt-dlp.nix
./tmux.nix
./shell.nix
./helix.nix
./git.nix
];
options.nixowos.${name} = {
enable = lib.mkEnableOption name;
extraPackages = lib.mkOption {
type = lib.types.listOf lib.types.package;
default = with pkgs; [
trash-cli
killall
fd
ripgrep
iftop
dust
compsize
ffmpeg
python3
];
};
};
config = lib.mkIf cfg.enable {
nixowos.${name} = {
yt-dlp.enable = true;
tmux.enable = true;
shell.enable = true;
helix.enable = true;
git.enable = true;
};
environment.systemPackages = cfg.extraPackages;
# enter dev env on cd
programs.direnv = lib.mkDefault {
enable = true;
# hide extra logging, that isn't particularly useful
# (for only using nix at least)
settings.global.hide_env_diff = true;
};
# cat replacement
programs.bat = lib.mkDefault {
enable = true;
# settings.theme = "ansi";
extraPackages = with pkgs.bat-extras; [
# for syntax highlighting manual pages
batman
];
};
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "git";
cfg = config.nixowos.cli.${name};
in
{
options.nixowos.cli.${name} = {
enable = lib.mkEnableOption name;
delta.enable = lib.mkOption {
default = true;
example = false;
description = "Whether to enable delta with git integration.";
type = lib.types.bool;
};
};
config = lib.mkIf cfg.enable {
environment.systemPackages = lib.mkIf cfg.delta.enable [ pkgs.delta ];
programs.git = {
enable = true;
config = lib.mkMerge [
{
init.defaultBranch = "main";
core.compression = 9; # max
credential.helper = "cache";
push.autoSetupRemote = true;
pull.ff = "only";
merge.conflictStyle = "zdiff3";
commit.verbose = true; # show diffs in commit editor
}
(lib.mkIf cfg.delta.enable {
core.pager = "delta"; # depends on pkgs.delta!
interactive.diffFilter = "delta --color-only";
delta.navigate = true; # use n and N to move between diff sections
delta.diff-highlight = true; # simpler mode, highlights inter-line changes
})
];
};
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "helix";
cfg = config.nixowos.cli.${name};
in
{
options.nixowos.cli.${name} = {
enable = lib.mkEnableOption name;
extraConfig = lib.mkOption {
type = lib.types.lines;
default = /* toml */ ''
theme = "dark_high_contrast"
[editor]
soft-wrap.enable = true
[editor.cursor-shape]
insert = "bar"
normal = "block"
select = "underline"
'';
};
};
config = lib.mkIf cfg.enable {
environment.systemPackages = [
(pkgs.writeShellScriptBin "hx" "${pkgs.helix}/bin/hx -c /etc/${name}.toml $@")
];
# nixos/modules/programs/environment.nix uses mkDefault "nano"
environment.variables.EDITOR = lib.mkOverride 900 "hx";
environment.etc."${name}.toml".text = cfg.extraConfig;
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "shell";
cfg = config.nixowos.cli.${name};
# use a more verbose output style for nix than default
# only lix supports log-format = multiline-with-logs
logFormat = if config.nixowos.system.lix.enable then "multiline-with-logs" else "bar-with-logs";
in
{
options.nixowos.cli.${name} = {
enable = lib.mkEnableOption name;
};
config = lib.mkIf cfg.enable {
# use Fish, the nicest shell :)
programs.fish.enable = true;
users.defaultUserShell = pkgs.fish;
# avoid generating caches (enabled by fish) due to slowdowns during nixos-rebuild
# this may degrade autocompletion
documentation.man.generateCaches = false;
environment.shellAliases = {
# make nix-shell preserve the user's $SHELL
nix-shell = /* sh */ ''nix-shell --command "export SHELL=$SHELL; $SHELL"'';
nixos-rebuild = /* sh */ "nixos-rebuild --ask-sudo-password --log-format ${logFormat}";
nix = /* sh */ "nix --log-format ${logFormat}";
};
};
}

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{
lib,
config,
...
}:
let
name = "tmux";
cfg = config.nixowos.cli.${name};
in
{
options.nixowos.cli.${name} = {
enable = lib.mkEnableOption name;
};
config = lib.mkIf cfg.enable {
programs.tmux = lib.mkDefault {
enable = true;
# this is a sin committed for ergonomics
# since "1" and "0" are quite far apart on most keyboards
baseIndex = 1;
keyMode = "vi";
# https://unix.stackexchange.com/questions/608142/whats-the-effect-of-escape-time-in-tmux
escapeTime = 50;
clock24 = true;
extraConfig = /* sh */ ''
set -g mouse on
# open new shells in the same working directory
bind '"' split-window -c "#{pane_current_path}"
bind % split-window -h -c "#{pane_current_path}"
bind c new-window -c "#{pane_current_path}"
###### STYLING
set -g status-style 'fg=pink'
setw -g window-status-style 'fg=pink bg=black'
setw -g window-status-format ' #I #[fg=white]#W #[fg=pink]#F '
setw -g window-status-current-style 'fg=black bg=pink'
setw -g window-status-current-format ' #I #W #F '
set -g message-style 'fg=black bg=pink'
set -g mode-style 'fg=black bg=pink'
set -g pane-border-style 'fg=grey'
set -g pane-active-border-style 'fg=pink'
'';
};
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "yt-dlp";
cfg = config.nixowos.cli.${name};
in
{
options.nixowos.cli.${name} = {
enable = lib.mkEnableOption name;
package = lib.mkPackageOption pkgs name { };
extraConfig = lib.mkOption {
type = lib.types.lines;
default = ''
--no-write-auto-subs
--sub-langs all,-live_chat
--embed-subs
--embed-metadata
--embed-chapters
--sponsorblock-mark all
--paths temp:/tmp
'';
};
};
config = lib.mkIf cfg.enable {
environment.systemPackages = [ cfg.package ];
environment.etc."${name}.conf".text = cfg.extraConfig;
};
}

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{
lib,
config,
...
}:
let
cfg = config.nixowos;
in
{
imports = [
./cli
./graphical
./system
];
options.nixowos = {
enable = lib.mkEnableOption "common settings";
};
config = lib.mkIf cfg.enable {
nixowos.cli.enable = true;
nixowos.system.enable = true;
};
}

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{
lib,
config,
...
}:
let
name = "graphical";
cfg = config.nixowos.${name};
in
{
imports = [
./plasma.nix
./nvidia.nix
./games
./jp.nix
./mpv.nix
];
options.nixowos.${name} = {
enable = lib.mkEnableOption name;
};
config = lib.mkIf cfg.enable {
nixowos.${name} = {
plasma.enable = config.services.desktopManager.plasma6.enable;
mpv.enable = true;
};
};
}

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{
lib,
config,
...
}:
let
name = "games";
cfg = config.nixowos.graphical.${name};
in
{
imports = [
./mangohud.nix
./steam.nix
];
options.nixowos.graphical.${name} = {
enable = lib.mkEnableOption name;
};
config = lib.mkIf cfg.enable {
nixowos.graphical.${name} = {
mangohud.enable = true;
steam.enable = true;
};
# load ntsync, which can improve performance
# for games running through wine/proton using it
boot.kernelModules = [ "ntsync" ];
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "mangohud";
cfg = config.nixowos.graphical.games.${name};
in
{
options.nixowos.graphical.games.${name} = {
enable = lib.mkEnableOption "${name}, a performance overlay";
package = lib.mkPackageOption pkgs name { };
extraConfig = lib.mkOption {
type = lib.types.lines;
default = ''
legacy_layout=false
background_alpha=0.2
background_color=000000
font_size=24
text_color=FFFFFF
position=top-left
no_display
table_columns=3
gpu_stats
gpu_load_change
gpu_load_value=50,90
gpu_load_color=FFFFFF,FFAA7F,CC0000
cpu_stats
cpu_temp
cpu_load_change
cpu_load_value=50,90
cpu_load_color=FFFFFF,FFAA7F,CC0000
swap
ram
fps
frame_timing
frametime_color=22FF00
fps_limit_method=late
fps_limit=60,5
fps_color_change
fps_value=30,60
fps_color=B22222,FDFD09,39F900
'';
};
};
config = lib.mkIf cfg.enable {
environment.systemPackages = [ cfg.package ];
environment.variables = {
MANGOHUD = 1; # enables mangohud by default on all vulkan games
MANGOHUD_CONFIG = cfg.extraConfig;
};
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "steam";
cfg = config.nixowos.graphical.games.${name};
in
{
options.nixowos.graphical.games.${name} = {
enable = lib.mkEnableOption name;
};
config = lib.mkIf cfg.enable {
programs.steam = lib.mkDefault {
enable = true;
# open firewall to let these steam features work
localNetworkGameTransfers.openFirewall = true;
remotePlay.openFirewall = true;
dedicatedServer.openFirewall = true;
# make GE-Proton avaliable
extraCompatPackages = [ pkgs.proton-ge-bin ];
# protontricks.enable = true;
};
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "jp";
cfg = config.nixowos.graphical.${name};
in
{
options.nixowos.graphical.${name} = {
enable = lib.mkEnableOption name;
};
config = lib.mkIf cfg.enable {
# enable default fonts (helps with emojis, etc)
fonts.enableDefaultPackages = lib.mkDefault true;
# for higher quality asian fonts
# without this, chromium might not render asian text at all
fonts.packages = [ pkgs.noto-fonts-cjk-sans ];
# for typing in japanese
i18n.inputMethod = lib.mkDefault {
enable = true;
type = "fcitx5";
fcitx5 = {
waylandFrontend = true;
addons = with pkgs; [
fcitx5-mozc # japanese module
fcitx5-gtk
];
settings.globalOptions = {
# also require "alt" for triggering IME
# this is to avoid conflicts with other apps/games
"Hotkey/TriggerKeys"."0" = "Control+Alt+space";
};
# basic configuration for switching between normal mode and mozc
settings.inputMethod = {
"Groups/0" = {
Name = "Default";
"Default Layout" = "us";
DefaultIM = "mozc";
};
"Groups/0/Items/0" = {
Name = "keyboard-us";
Layout = "us";
};
"Groups/0/Items/1" = {
Name = "mozc";
Layout = "us";
};
GroupOrder."0" = "Default";
};
settings.addons.classicui.globalSection.Theme =
lib.mkIf config.services.displayManager.plasma6.enable "plasma";
};
};
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "mpv";
cfg = config.nixowos.graphical.${name};
in
{
options.nixowos.graphical.${name} = {
enable = lib.mkEnableOption name;
package = lib.mkPackageOption pkgs name { };
extraConfig = lib.mkOption {
type = lib.types.lines;
default = ''
hwdec
autocreate-playlist=same
use-filedir-conf
screenshot-format=webp
# 6 is maximum size efficency
screenshot-webp-compression=6
screenshot-webp-lossless=yes
'';
};
};
config = lib.mkIf cfg.enable {
environment.systemPackages = [ cfg.package ];
environment.etc."${name}/${name}.conf".text = cfg.extraConfig;
};
}

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{
lib,
config,
...
}:
let
name = "nvidia";
cfg = config.nixowos.graphical.${name};
in
{
options.nixowos.graphical.${name} = {
enable = lib.mkEnableOption name;
};
config = lib.mkIf cfg.enable {
# enable nvidia drivers (not just for xorg!)
services.xserver.videoDrivers = [ "nvidia" ];
hardware.nvidia = {
# Nvidia power management. Experimental, and can cause sleep/suspend to fail.
# Enable this if you have graphical corruption issues or application crashes after waking
# up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead
# of just the bare essentials.
# powerManagement.enable = false;
# Use the NVidia open source kernel module (not to be confused with the
# independent third-party "nouveau" open source driver).
# Support is limited to the Turing and later architectures:
# https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
# Only available from driver 515.43.04+
open = true;
# Enable the Nvidia settings menu,
# accessible via `nvidia-settings`.
nvidiaSettings = true;
};
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "plasma";
cfg = config.nixowos.graphical.${name};
in
{
options.nixowos.graphical.${name} = {
enable = lib.mkEnableOption name;
startOnFirstTTY = lib.mkEnableOption "${name} auto start from tty1";
};
config = lib.mkIf cfg.enable {
environment.systemPackages = [ pkgs.kdePackages.plasma-keyboard ];
environment.interactiveShellInit =
lib.mkIf cfg.startOnFirstTTY
/* sh */ "test $(tty) = /dev/tty1 && startplasma-wayland";
services.displayManager.sddm.enable = !cfg.startOnFirstTTY;
# remove plasma6 packages included by default
# from optionalPackages defined in nixpkgs/nixos/modules/services/desktop-managers/plasma6.nix
environment.plasma6.excludePackages = with pkgs.kdePackages; [
plasma-workspace-wallpapers
kwin-x11
elisa
krdp
];
# use kdeconnect (opens ports)
programs.kdeconnect.enable = true;
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "system";
cfg = config.nixowos.${name};
in
{
imports = [
./lix.nix
./nix.nix
];
options.nixowos.${name} = {
enable = lib.mkEnableOption name;
extraPackages = lib.mkOption {
type = lib.types.listOf lib.types.package;
default = with pkgs; [
sshfs
];
};
};
config = lib.mkIf cfg.enable {
nixowos.${name} = {
lix.enable = true;
nix.enable = true;
};
environment.systemPackages = cfg.extraPackages;
boot.loader.grub = lib.mkDefault {
# modern installation
device = "nodev";
efiSupport = true;
# if your /boot partition is encrypted, this is needed
# grub takes a long time to unlock a partition though, so this is undesirable
# and you might also need to embed the key into initramfs to avoid needing to enter the password twice
# enableCryptodisk = true;
# keep the grub background black
splashImage = null;
# look for other efi entries and add them to the boot menu
# useOSProber = true;
# extra grub entry for memory testing
memtest86.enable = true;
};
# use tmpfs for /tmp to minimize disk wear
# consider disabling if you have very limited memory
boot.tmp = lib.mkDefault {
useTmpfs = true;
tmpfsSize = "70%";
};
# run fstrim monthly instead of weekly
# weekly is unecessary for preventing long-term performance degredation
# https://unix.stackexchange.com/questions/218076/ssd-how-often-should-i-do-fstrim
services.fstrim.interval = lib.mkDefault "monthly";
# extra memory if you can spare the CPU cycles
zramSwap = lib.mkDefault {
enable = true;
# this is the amount of uncompressed data that can be swapped out
# practical maximum is 150%
memoryPercent = 100;
};
security.sudo-rs.enable = lib.mkDefault true;
services.openssh = lib.mkDefault {
enable = true;
# only accept key authentication, for security
settings.PasswordAuthentication = false;
};
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "lix";
cfg = config.nixowos.system.${name};
in
{
options.nixowos.system.${name} = {
enable = lib.mkEnableOption name;
};
config = lib.mkIf cfg.enable {
# use lix, a fork of nix
# see: https://lix.systems/about
nix.package = pkgs.lixPackageSets.stable.lix;
# overlays so that all nix tools use lix
nixpkgs.overlays = [
(final: prev: {
inherit (prev.lixPackageSets.stable)
nixpkgs-review
nix-eval-jobs
nix-fast-build
colmena
;
})
];
};
}

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{
pkgs,
lib,
config,
...
}:
let
name = "nix";
cfg = config.nixowos.system.${name};
in
{
options.nixowos.system.${name} = {
enable = lib.mkEnableOption name;
};
config = lib.mkIf cfg.enable {
# enable useful nix tools, and the flakes system
nix.settings.experimental-features = "nix-command flakes";
# you (should) never need this
nix.channel.enable = false;
# reduces disk usage of the nix store
# It does this by performing `nix store optimize` incrementally for each new path
# source: https://nix.dev/manual/nix/2.26/command-ref/new-cli/nix3-store-optimise
nix.settings.auto-optimise-store = true;
environment.systemPackages = with pkgs; [
nixd
nixfmt
];
};
}