75 lines
2.0 KiB
Org Mode
75 lines
2.0 KiB
Org Mode
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#+title: Bootloaders and Filesystems
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#+setupfile: ../headers
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* Bootloaders and Filesystems
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This page sets up the bootloader of my machines. Whilst I generally
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prefer to use [[https://systemd.io/BOOT/][systemd-boot]], some of my VPS use GRUB, and some use ZFS.
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All that gets exposed with my module =nixos.loader=.
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#+begin_src nix :tangle loader.new.nix
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{
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flake.modules.nixos.loader = {
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lib,
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config,
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...
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}:
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with lib; let
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cfg = config.mySystem.boot;
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in {
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};
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}
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#+end_src
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** Bootloaders
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By default, I want to use systemd-boot on my machines, but I need it
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to be disabled whenever I use something else. For now, this “something
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else” is only GRUB, but I’m not excluding using something else on yet
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another machine such as [[https://www.rodsbooks.com/refind/][rEFInd]]. To ensure a single source of truth
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regarding whether systemd-boot is to be used, I have an option for
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that.
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#+name: systemd-boot-options
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#+begin_src nix
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options.mySystem.boot.systemd-boot = mkOption {
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type = types.bool;
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default = !cfg.grub.enable;
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description = "Does the system use systemd-boot?";
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};
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#+end_src
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I can now set some options depending on that, such as whether to
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enable systemd-boot itself (duh), and whether the installation process
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can touch my EFI variables.
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#+name: systemd-boot-config
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#+begin_src nix
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config.boot.loader = {
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systemd-boot.enable = cfg.systemd-boot;
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efi.canTouchEfiVariables = cfg.systemd-boot;
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};
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#+end_src
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But, I have a VPS that requires me to use GRUB. For this, I also have
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an option to enable it.
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#+name: grub-options
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#+begin_src nix
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options.mySystem.boot.grub = {
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enable = mkEnableOption "Does the system use GRUB? (Disables systemd-boot)";
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device = mkOption {
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type = types.path;
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description = "The GRUB device";
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default = "";
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};
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};
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#+end_src
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I can no pass these options to the boot configuration of my machine.
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#+name: grub-config
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#+begin_src nix
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config.boot.loader.grub = mkIf cfg.grub.enable {
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inherit (cfg.grub) enable device;
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};
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#+end_src
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** ZFS
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Now, this is where I enable
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