{ config, pkgs, lib, ... }: with lib; let cfg = config.pub-solar.core.hibernation; in { options.pub-solar.core.hibernation = { enable = mkOption { type = types.bool; default = false; description = "Whether the device can hibernate. This creates a swapfile at /swapfile."; }; resumeDevice = mkOption { type = types.nullOr types.str; default = null; description = "The location of the hibernation resume swap file."; }; resumeOffset = mkOption { type = types.nullOr types.int; default = null; description = "The swap file offset. Can be found by running `filefrag -v $swap_file_location`. See https://wiki.archlinux.org/title/Power_management/Suspend_and_hibernate#Hibernation_into_swap_file"; }; }; config = { boot = mkIf cfg.enable { resumeDevice = mkIf (cfg.resumeDevice != null) cfg.resumeDevice; kernelParams = mkIf (cfg.resumeOffset != null) ["resume_offset=${builtins.toString cfg.resumeOffset}"]; }; }; }