51 lines
1.5 KiB
Nix
51 lines
1.5 KiB
Nix
# This module contains the basic configuration for building a NixOS
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# installation CD.
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{ config, lib, pkgs, ... }:
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with lib;
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{
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imports =
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[ ./channel.nix
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./iso-image.nix
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# Profiles of this basic installation CD.
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../../profiles/all-hardware.nix
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../../profiles/base.nix
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../../profiles/installation-device.nix
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];
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# ISO naming.
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isoImage.isoName = "${config.isoImage.isoBaseName}-${config.system.nixosVersion}-${pkgs.stdenv.system}.iso";
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isoImage.volumeID = substring 0 11 "NIXOS_ISO";
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# Make the installer more likely to succeed in low memory
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# environments. The kernel's overcommit heustistics bite us
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# fairly often, preventing processes such as nix-worker or
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# download-using-manifests.pl from forking even if there is
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# plenty of free memory.
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boot.kernel.sysctl."vm.overcommit_memory" = "1";
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# To speed up installation a little bit, include the complete stdenv
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# in the Nix store on the CD. Archive::Cpio is needed for the
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# initrd builder.
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isoImage.storeContents = [ pkgs.stdenv pkgs.busybox pkgs.perlPackages.ArchiveCpio ];
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# EFI booting
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isoImage.makeEfiBootable = true;
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# Add Memtest86+ to the CD.
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boot.loader.grub.memtest86.enable = true;
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# Get a console as soon as the initrd loads fbcon on EFI boot.
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boot.initrd.kernelModules = [ "fbcon" ];
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# Add support for cow filesystems and their utilities
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boot.supportedFilesystems = [ /* "zfs" */ "btrfs" ];
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# Allow the user to log in as root without a password.
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users.extraUsers.root.initialHashedPassword = "";
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}
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