29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
45 lines
1.3 KiB
Nix
45 lines
1.3 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}-${pkgs.stdenv.system}.iso";
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isoImage.volumeID = substring 0 11 "NIXOS_${config.system.nixosVersion}";
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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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}
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