Nix-Configs/configs/filesystems.nix

{ config, lib, pkgs, modulesPath, ... }:
let systemInformation = import ../system/system-information.nix; in
{
	boot.tmp.useTmpfs = true;
	boot.tmp.tmpfsSize = "75%";
	boot.initrd.luks.devices = {
		cryptoroot = {
			device = systemInformation.rootPartition;
			allowDiscards = true;
			bypassWorkqueues = true;
		};
		cryptoswap = {
			device = systemInformation.swapPartition;
			keyFile = "/crypto_keyfile.bin";
			allowDiscards = true;
			bypassWorkqueues = true;
		};
	};
	fileSystems = {
		"/" = {
			device = "/dev/mapper/cryptoroot";
			options = [
				"defaults"

				# Batch journaling commits to 2 minutes for power saving
				# https://wiki.archlinux.org/title/Power_management#Writeback_Time
				"commit=120"

				# Turn on zstd compression
				"compress=zstd"

				# Performance optimizations for SSD
				"noatime"
				"nodiratime"
				"discard"
			];

			# Uncomment this once the root fs is actually btrfs
			# fsType = "btrfs";
		};
		"/boot/efi" = {
			device = systemInformation.efiPartition;
			fsType = "vfat";
		};
	};
	swapDevices = [
		{
			device = "/dev/mapper/cryptoswap";
			discardPolicy = "both";
		}
	];
}