Package request: nixos-generate-config

[ivan]

I would like to run nixos-generate-config outside the installer environment on non-NixOS distributions, to get the hardware configuration, particularly the list of kernel modules that should go into boot.initrd.availableKernelModules. (I am installing these machines with something similar to nixos-infect rather than nixos-install.)

nixos-generate-config is currently generated only in a module.

The workaround I'm using on Debian because I can't nix-env -iA it:

apt-get install file-slurp
perl /nix/store/h3j6xqbzxl6wasxm0s61n5q3683ypfkp-nixpkgs-19.03pre166583.872502aa56b/nixpkgs/nixos/modules/installer/tools/nixos-generate-config.pl --show-hardware-config

update: now

apt-get install libfile-slurp-perl git
git clone --depth=1 https://github.com/NixOS/nixpkgs
perl nixpkgs/nixos/modules/installer/tools/nixos-generate-config.pl --show-hardware-config

[jtojnar]

This was previously done in #48122 but it was reverted.

As a hack, you can create the following nixos-tools.nix:

{ pkgs ? import <nixpkgs> {} }:
let
  config.nix.package = pkgs.nix;
  config.system.nixos = {
    release = "Koi";
    version = "19.03";
    codeName = "Koi";
    revision = "foo";
  };

  inherit (pkgs) lib;

  tools = import <nixpkgs/nixos/modules/installer/tools/tools.nix> { inherit pkgs lib config; };

in tools.config.system.build

and then run nix-env -f nixos-tools.nix -iA nixos-generate-config.

[stale]

Thank you for your contributions.

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[roberth]

Done in the form of nixos-install-tools.