disko/module.nix

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{ config, lib, pkgs, extendModules, ... }@args:
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let
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diskoLib = import ./lib {
inherit lib;
rootMountPoint = config.disko.rootMountPoint;
makeTest = import (pkgs.path + "/nixos/tests/make-test-python.nix");
eval-config = import (pkgs.path + "/nixos/lib/eval-config.nix");
};
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cfg = config.disko;
in
{
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options.disko = {
extraRootModules = lib.mkOption {
type = lib.types.listOf lib.types.str;
description = ''
extra modules to pass to the vmTools.runCommand invocation in the make-disk-image.nix builder
'';
default = [ ];
};
memSize = lib.mkOption {
type = lib.types.int;
description = ''
size of the memory passed to runInLinuxVM, in megabytes
'';
default = 1024;
};
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devices = lib.mkOption {
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type = diskoLib.toplevel;
default = { };
description = "The devices to set up";
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};
extraDependencies = lib.mkOption {
type = lib.types.listOf lib.types.package;
description = ''
list of extra packages to make available in the make-disk-image.nix VM builder, an example might be f2fs-tools
'';
default = [ ];
};
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;
};
tests = {
efi = lib.mkOption {
description = ''
Whether efi is enabled for the `system.build.installTest`.
We try to automatically detect efi based on the configured bootloader.
'';
type = lib.types.bool;
defaultText = "config.boot.loader.systemd-boot.enable || config.boot.loader.grub.efiSupport";
default = config.boot.loader.systemd-boot.enable || config.boot.loader.grub.efiSupport;
};
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extraChecks = lib.mkOption {
description = ''
extra checks to run in the `system.build.installTest`.
'';
type = lib.types.lines;
default = "";
example = ''
machine.succeed("test -e /var/secrets/my.secret")
'';
};
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extraConfig = lib.mkOption {
description = ''
Extra NixOS config for your test. Can be used to specify a different luks key for tests.
A dummy key is in /tmp/secret.key
'';
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default = { };
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};
};
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};
config = lib.mkIf (cfg.devices.disk != { }) {
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system.build = (cfg.devices._scripts { inherit pkgs; checked = cfg.checkScripts; }) // {
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# we keep these old outputs for compatibility
disko = builtins.trace "the .disko output is deprecated, please use .diskoScript instead" (cfg.devices._scripts { inherit pkgs; }).diskoScript;
diskoNoDeps = builtins.trace "the .diskoNoDeps output is deprecated, please use .diskoScriptNoDeps instead" (cfg.devices._scripts { inherit pkgs; }).diskoScriptNoDeps;
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diskoImages = diskoLib.makeDiskImages {
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nixosConfig = args;
};
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diskoImagesScript = diskoLib.makeDiskImagesScript {
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nixosConfig = args;
};
installTest = diskoLib.testLib.makeDiskoTest {
inherit extendModules pkgs;
name = "${config.networking.hostName}-disko";
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disko-config = builtins.removeAttrs config [ "_module" ];
testMode = "direct";
efi = cfg.tests.efi;
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extraSystemConfig = cfg.tests.extraConfig;
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extraTestScript = cfg.tests.extraChecks;
};
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};
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# we need to specify the keys here, so we don't get an infinite recursion error
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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 cfg.devices._config.fileSystems or { };
boot = lib.mkIf cfg.enableConfig cfg.devices._config.boot or { };
swapDevices = lib.mkIf cfg.enableConfig cfg.devices._config.swapDevices or [ ];
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};
}