{ disko.devices = { disk = { main-disk = { device = "/dev/sda"; type = "disk"; content = { type = "gpt"; partitions = { ESP = { name = "boot"; type = "EF00"; size = "512M"; content = { type = "filesystem"; format = "vfat"; mountpoint = "/boot"; mountOptions = [ "umask=0077" ]; }; }; root = { name = "nixos"; size = "100%"; content = { type = "filesystem"; format = "ext4"; mountpoint = "/"; }; }; }; }; }; }; }; }