forked from extern/nixos-installer
40 lines
2.0 KiB
Markdown
40 lines
2.0 KiB
Markdown
/*
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# Boot(-loader) File Systems
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This is a simple shortcut to define and mount a boot/firmware/EFI partition and file system, such that they can get created automatically.
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## Implementation
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```nix
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#*/# end of MarkDown, beginning of NixOS module:
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dirname: inputs: { config, pkgs, lib, ... }: let lib = inputs.self.lib.__internal__; in let
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inherit (inputs.config.rename) setup;
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cfg = config.${setup}.bootpart;
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hash = builtins.substring 0 8 (builtins.hashString "sha256" config.networking.hostName);
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in {
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options = { ${setup}.bootpart = {
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enable = lib.mkEnableOption "configuration of a boot partition as GPT partition 1 on the »primary« disk and a FAT32 filesystem on it";
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mountpoint = lib.mkOption { description = "Path at which to mount a vfat boot partition."; type = lib.types.str; default = "/boot"; };
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createMbr = lib.mkOption { description = "Whether to create a hybrid MBR with (only) the boot partition listed as partition 1."; type = lib.types.bool; default = true; };
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size = lib.mkOption { description = "Size of the boot partition, should be *more* than 32M(iB)."; type = lib.types.str; default = "2G"; };
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}; };
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config = let
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in lib.mkIf cfg.enable (lib.mkMerge [ ({
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${setup} = {
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disks.partitions."boot-${hash}" = { type = lib.mkDefault "ef00"; size = lib.mkDefault cfg.size; index = lib.mkDefault 1; order = lib.mkDefault 1500; disk = lib.mkOptionDefault "primary"; }; # require it to be part1, and create it early
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disks.devices = lib.mkIf cfg.createMbr { primary = { mbrParts = lib.mkDefault "1"; extraFDiskCommands = ''
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t;1;c # type ; part1 ; W95 FAT32 (LBA)
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a;1 # active/boot ; part1
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''; }; };
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};
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fileSystems.${cfg.mountpoint} = { fsType = "vfat"; device = "/dev/disk/by-partlabel/boot-${hash}"; neededForBoot = true; options = [ "nosuid" "nodev" "noexec" "noatime" "umask=0027" "discard" ]; formatArgs = [ "-F" "32" ]; };
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}) ]);
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}
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