mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-01 15:11:25 +00:00
f3d94cfc23
This reverts commit cad8957eab. It
breaks NixOps, but more importantly, such major changes to the module
system really need to be reviewed.
63 lines
2.0 KiB
Nix
63 lines
2.0 KiB
Nix
# From an end-user configuration file (`configuration'), build a NixOS
|
|
# configuration object (`config') from which we can retrieve option
|
|
# values.
|
|
|
|
# !!! Please think twice before adding to this argument list!
|
|
# Ideally eval-config.nix would be an extremely thin wrapper
|
|
# around lib.evalModules, so that modular systems that have nixos configs
|
|
# as subcomponents (e.g. the container feature, or nixops if network
|
|
# expressions are ever made modular at the top level) can just use
|
|
# types.submodule instead of using eval-config.nix
|
|
{ # !!! system can be set modularly, would be nice to remove
|
|
system ? builtins.currentSystem
|
|
, # !!! is this argument needed any more? The pkgs argument can
|
|
# be set modularly anyway.
|
|
pkgs ? null
|
|
, # !!! what do we gain by making this configurable?
|
|
baseModules ? import ../modules/module-list.nix
|
|
, # !!! See comment about args in lib/modules.nix
|
|
extraArgs ? {}
|
|
, # !!! See comment about args in lib/modules.nix
|
|
specialArgs ? {}
|
|
, modules
|
|
, # !!! See comment about check in lib/modules.nix
|
|
check ? true
|
|
, prefix ? []
|
|
, lib ? import ../../lib
|
|
}:
|
|
|
|
let extraArgs_ = extraArgs; pkgs_ = pkgs; system_ = system;
|
|
extraModules = let e = builtins.getEnv "NIXOS_EXTRA_MODULE_PATH";
|
|
in if e == "" then [] else [(import (builtins.toPath e))];
|
|
in
|
|
|
|
let
|
|
pkgsModule = rec {
|
|
_file = ./eval-config.nix;
|
|
key = _file;
|
|
config = {
|
|
nixpkgs.system = lib.mkDefault system_;
|
|
_module.args.pkgs = lib.mkIf (pkgs_ != null) (lib.mkForce pkgs_);
|
|
};
|
|
};
|
|
|
|
in rec {
|
|
|
|
# Merge the option definitions in all modules, forming the full
|
|
# system configuration.
|
|
inherit (lib.evalModules {
|
|
inherit prefix check;
|
|
modules = modules ++ extraModules ++ baseModules ++ [ pkgsModule ];
|
|
args = extraArgs;
|
|
specialArgs = { modulesPath = ../modules; } // specialArgs;
|
|
}) config options;
|
|
|
|
# These are the extra arguments passed to every module. In
|
|
# particular, Nixpkgs is passed through the "pkgs" argument.
|
|
extraArgs = extraArgs_ // {
|
|
inherit modules baseModules;
|
|
};
|
|
|
|
inherit (config._module.args) pkgs;
|
|
}
|