nixpkgs/nixos/modules/installer/tools/tools.nix

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# This module generates nixos-install, nixos-rebuild,
# nixos-generate-config, etc.
{ config, lib, pkgs, modulesPath, ... }:
with lib;
let
makeProg = args: pkgs.substituteAll (args // {
dir = "bin";
isExecutable = true;
});
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nixos-build-vms = makeProg {
- Added nixos-build-vms command, which builds a virtual network from a network.nix expression (also used by nixos-deploy-network) - Added a backdoor option to the interactive run-vms script. This allows me to intergrate the virtual network approach with Disnix - Small documentation fixes Some explanation: The nixos-build-vms command line tool can be used to build a virtual network of a network.nix specification. For example, a network configuration (network.nix) could look like this: { test1 = {pkgs, config, ...}: { services.openssh.enable = true; ... }; test2 = {pkgs, config, ...}: { services.openssh.enable = true; services.xserver.enable = true; } ; } By typing the following instruction: $ nixos-build-vms -n network.nix a virtual network is built, which can be started by typing: $ ./result/bin/run-vms It is also possible to enable a backdoor. In this case *.socket files are stored in the current directory which can be used by the end-user to invoke remote instruction on a VM in the network through a Unix domain socket. For example by building the network with the following instructions: $ nixos-build-vms -n network.nix --use-backdoor and launching the virtual network: $ ./result/bin/run-vms You can find two socket files in your current directory, namely: test1.socket and test2.socket. These Unix domain sockets can be used to remotely administer the test1 and test2 machine in the virtual network. For example by running: $ socat ./test1.socket stdio ls /root You can retrieve the contents of the /root directory of the virtual machine with identifier test1 svn path=/nixos/trunk/; revision=24410
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name = "nixos-build-vms";
src = ./nixos-build-vms/nixos-build-vms.sh;
};
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nixos-install = makeProg {
name = "nixos-install";
src = ./nixos-install.sh;
nix = config.nix.package.out;
path = makeBinPath [ nixos-enter ];
};
nixos-rebuild =
let fallback = import ./nix-fallback-paths.nix; in
makeProg {
name = "nixos-rebuild";
src = ./nixos-rebuild.sh;
nix = config.nix.package.out;
nix_x86_64_linux = fallback.x86_64-linux;
nix_i686_linux = fallback.i686-linux;
};
nixos-generate-config = makeProg {
name = "nixos-generate-config";
src = ./nixos-generate-config.pl;
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path = [ pkgs.btrfs-progs ];
perl = "${pkgs.perl}/bin/perl -I${pkgs.perlPackages.FileSlurp}/lib/perl5/site_perl";
inherit (config.system.nixos) release;
};
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nixos-option = makeProg {
name = "nixos-option";
src = ./nixos-option.sh;
};
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nixos-version = makeProg {
name = "nixos-version";
src = ./nixos-version.sh;
inherit (config.system.nixos) version codeName revision;
};
nixos-enter = makeProg {
name = "nixos-enter";
src = ./nixos-enter.sh;
};
in
{
config = {
environment.systemPackages =
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[ nixos-build-vms
nixos-install
nixos-rebuild
nixos-generate-config
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nixos-option
nixos-version
nixos-enter
];
system.build = {
inherit nixos-install nixos-generate-config nixos-option nixos-rebuild nixos-enter;
};
};
}