d990aa7163
The key distinction I'm drawing is that there's a component that deals with the store of the machine being built, and another component for the store building it. The inner part of it assumes nothing from the builder (doesn't need chroot or root powers) so it can run comfortably inside a Nix build, as well as nixos-rebuild. I have some upcoming work that will use that to significantly speed up and streamline image builds for NixOS, especially on virtualized hosts like EC2, but it's also a reasonable speedup on native hosts.
95 lines
2.2 KiB
Nix
95 lines
2.2 KiB
Nix
# This module generates nixos-install, nixos-rebuild,
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# nixos-generate-config, etc.
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{ config, pkgs, modulesPath, ... }:
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let
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cfg = config.installer;
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makeProg = args: pkgs.substituteAll (args // {
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dir = "bin";
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isExecutable = true;
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});
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nixos-build-vms = makeProg {
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name = "nixos-build-vms";
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src = ./nixos-build-vms/nixos-build-vms.sh;
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};
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nixos-prepare-root = makeProg {
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name = "nixos-prepare-root";
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src = ./nixos-prepare-root.sh;
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nix = pkgs.nixUnstable;
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inherit (pkgs) perl pathsFromGraph rsync utillinux coreutils;
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};
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nixos-install = makeProg {
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name = "nixos-install";
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src = ./nixos-install.sh;
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inherit (pkgs) perl pathsFromGraph rsync;
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nix = config.nix.package.out;
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cacert = "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt";
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root_uid = config.ids.uids.root;
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nixbld_gid = config.ids.gids.nixbld;
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prepare_root = nixos-prepare-root;
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nixClosure = pkgs.runCommand "closure"
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{ exportReferencesGraph = ["refs" config.nix.package.out]; }
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"cp refs $out";
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};
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nixos-rebuild =
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let fallback = import ./nix-fallback-paths.nix; in
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makeProg {
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name = "nixos-rebuild";
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src = ./nixos-rebuild.sh;
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nix = config.nix.package.out;
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nix_x86_64_linux = fallback.x86_64-linux;
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nix_i686_linux = fallback.i686-linux;
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};
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nixos-generate-config = makeProg {
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name = "nixos-generate-config";
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src = ./nixos-generate-config.pl;
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path = [ pkgs.btrfs-progs ];
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perl = "${pkgs.perl}/bin/perl -I${pkgs.perlPackages.FileSlurp}/lib/perl5/site_perl";
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inherit (config.system) nixosRelease;
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};
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nixos-option = makeProg {
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name = "nixos-option";
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src = ./nixos-option.sh;
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};
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nixos-version = makeProg {
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name = "nixos-version";
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src = ./nixos-version.sh;
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inherit (config.system) nixosVersion nixosCodeName nixosRevision;
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};
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in
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{
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config = {
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environment.systemPackages =
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[ nixos-build-vms
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nixos-prepare-root
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nixos-install
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nixos-rebuild
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nixos-generate-config
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nixos-option
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nixos-version
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];
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system.build = {
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inherit nixos-install nixos-prepare-root nixos-generate-config nixos-option nixos-rebuild;
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};
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};
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}
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