{ device ? throw "device argument is required", ... }: { disko.devices = { disk.usb = { inherit device; type = "disk"; content = { type = "gpt"; partitions = { boot = { name = "boot"; size = "1M"; type = "EF02"; }; esp = { name = "esp"; size = "512M"; type = "EF00"; content = { type = "filesystem"; format = "vfat"; mountpoint = "/boot"; mountOptions = [ "umask=0077" ]; }; }; root = { name = "root"; size = "100%"; content = { name = "usb"; type = "luks"; settings = { allowDiscards = true; }; content = { type = "btrfs"; extraArgs = [ "-f" ]; subvolumes = { "@" = { mountpoint = "/"; }; "@persist" = { mountpoint = "/persist"; mountOptions = [ "compress=zstd" "noatime" ]; }; "@nix" = { mountpoint = "/nix"; mountOptions = [ "compress=zstd" "noatime" ]; }; "@cache" = { mountpoint = "/cache"; mountOptions = [ "compress=zstd" "noatime" ]; }; }; }; }; }; }; }; }; }; }