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|
{ lib, config, ... }:
with lib; let
cfg = config.local;
in {
options.local.fs.layout = with lib.types; {
sysHddBtrfs = mkOption {
default = null;
type = nullOr (submodule {
options = {
sys = {
device = mkOption {
type = str;
};
ssd = mkOption {
type = bool;
};
root = mkOption {
type = str;
};
toplevel = mkOption {
type = str;
};
};
hdd = {
device = mkOption {
type = str;
};
home = mkOption {
type = str;
};
};
};
});
};
};
config = {
local.fs.btrfs = let
sysHddBtrfs = layout: {
"/" = {
inherit (layout.sys) device ssd;
subvol = layout.sys.root;
};
"/toplevel" = {
inherit (layout.sys) device ssd;
subvol = layout.sys.toplevel;
};
"/hdd" = {
inherit (layout.hdd) device;
subvol = "/";
ssd = false;
};
"/home" = {
inherit (layout.hdd) device;
subvol = layout.hdd.home;
ssd = false;
snapper = "home";
};
};
inherit (cfg.fs) layout;
layoutMaps = [ sysHddBtrfs ];
layoutOpts = [ layout.sysHddBtrfs ];
valid = filter ({ snd, ... }: snd != null) (zipLists layoutMaps layoutOpts);
in optionalAttrs (valid != []) ((head valid).fst (head valid).snd);
assertions = [
{
assertion = length (filter (layout: layout != null) (attrValues cfg.fs.layout)) <= 1;
message = "Cannot enable more than one filesystem layout";
}
];
};
}
|
