disko/module.nix

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{ config, lib, pkgs, ... }:
let
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diskoLib = import ./lib {
inherit lib;
rootMountPoint = config.disko.rootMountPoint;
};
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cfg = config.disko;
checked = cfg.checkScripts;
in
{
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options.disko = {
devices = lib.mkOption {
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type = diskoLib.devices;
default = { };
description = "The devices to set up";
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};
rootMountPoint = lib.mkOption {
type = lib.types.str;
default = "/mnt";
description = "Where the device tree should be mounted by the mountScript";
};
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enableConfig = lib.mkOption {
description = ''
configure nixos with the specified devices
should be true if the system is booted with those devices
should be false on an installer image etc.
'';
type = lib.types.bool;
default = true;
};
checkScripts = lib.mkOption {
description = ''
Whether to run shellcheck on script outputs
'';
type = lib.types.bool;
default = false;
};
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};
config = lib.mkIf (cfg.devices.disk != { }) {
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system.build.formatScript = (diskoLib.writeCheckedBash { inherit pkgs checked; }) "disko-create" ''
export PATH=${lib.makeBinPath (diskoLib.packages cfg.devices pkgs)}:$PATH
${diskoLib.create cfg.devices}
'';
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system.build.mountScript = (diskoLib.writeCheckedBash { inherit pkgs checked; }) "disko-mount" ''
export PATH=${lib.makeBinPath (diskoLib.packages cfg.devices pkgs)}:$PATH
${diskoLib.mount cfg.devices}
'';
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system.build.disko = (diskoLib.writeCheckedBash { inherit pkgs checked; }) "disko" ''
export PATH=${lib.makeBinPath (diskoLib.packages cfg.devices pkgs)}:$PATH
${diskoLib.zapCreateMount cfg.devices}
'';
# This is useful to skip copying executables uploading a script to an in-memory installer
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system.build.diskoNoDeps = (diskoLib.writeCheckedBash { inherit pkgs checked; noDeps = true; }) "disko" ''
${diskoLib.zapCreateMount cfg.devices}
'';
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# Remember to add config keys here if they are added to types
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fileSystems = lib.mkIf cfg.enableConfig (lib.mkMerge (lib.catAttrs "fileSystems" (diskoLib.config cfg.devices)));
boot = lib.mkIf cfg.enableConfig (lib.mkMerge (lib.catAttrs "boot" (diskoLib.config cfg.devices)));
swapDevices = lib.mkIf cfg.enableConfig (lib.mkMerge (lib.catAttrs "swapDevices" (diskoLib.config cfg.devices)));
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};
}