forked from mirrors/nixpkgs
cad8957eab
- Enforce that an option declaration has a "defaultText" if and only if the type of the option derives from "package", "packageSet" or "nixpkgsConfig" and if a "default" attribute is defined. - Enforce that the value of the "example" attribute is wrapped with "literalExample" if the type of the option derives from "package", "packageSet" or "nixpkgsConfig". - Warn if a "defaultText" is defined in an option declaration if the type of the option does not derive from "package", "packageSet" or "nixpkgsConfig". - Warn if no "type" is defined in an option declaration.
72 lines
2.5 KiB
Nix
72 lines
2.5 KiB
Nix
# From an end-user configuration file (`configuration'), build a NixOS
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# configuration object (`config') from which we can retrieve option
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# values.
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# !!! Please think twice before adding to this argument list!
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# Ideally eval-config.nix would be an extremely thin wrapper
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# around lib.evalModules, so that modular systems that have nixos configs
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# as subcomponents (e.g. the container feature, or nixops if network
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# expressions are ever made modular at the top level) can just use
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# types.submodule instead of using eval-config.nix
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{ # !!! system can be set modularly, would be nice to remove
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system ? builtins.currentSystem
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, # !!! is this argument needed any more? The pkgs argument can
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# be set modularly anyway.
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pkgs ? null
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, # !!! what do we gain by making this configurable?
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baseModules ? import ../modules/module-list.nix
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, # !!! See comment about args in lib/modules.nix
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extraArgs ? {}
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, # !!! See comment about args in lib/modules.nix
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specialArgs ? {}
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, modules
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, # Pass through a configuration of the internal modules declared
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# in lib/modules.nix.
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_module ? {}
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, # !!! See comment about typeInference in lib/modules.nix
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typeInference ? null
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, # !!! See comment about check in lib/modules.nix
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check ? null
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, prefix ? []
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, lib ? import ../../lib
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}:
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let extraArgs_ = extraArgs; pkgs_ = pkgs; system_ = system;
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extraModules = let e = builtins.getEnv "NIXOS_EXTRA_MODULE_PATH";
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in if e == "" then [] else [(import (builtins.toPath e))];
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in
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let
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pkgsModule = rec {
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_file = ./eval-config.nix;
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key = _file;
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config = {
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nixpkgs.system = lib.mkDefault system_;
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_module.args.pkgs = lib.mkIf (pkgs_ != null) (lib.mkForce pkgs_);
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};
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};
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internalModule = { _module = (_module
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// (if isNull check then {} else { inherit check; })
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// (if isNull typeInference then {} else { inherit typeInference; })); };
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in rec {
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# Merge the option definitions in all modules, forming the full
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# system configuration.
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inherit (lib.evalModules {
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inherit prefix;
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modules = modules ++ extraModules ++ baseModules ++ [ pkgsModule ] ++ [ internalModule ];
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args = extraArgs;
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specialArgs = { modulesPath = ../modules; } // specialArgs;
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}) config options;
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# These are the extra arguments passed to every module. In
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# particular, Nixpkgs is passed through the "pkgs" argument.
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extraArgs = extraArgs_ // {
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inherit modules baseModules;
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};
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inherit (config._module.args) pkgs;
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}
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