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https://github.com/nix-community/nixos-generators.git
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f4a79d08d7
While the `all-formats.nix` module allows to import all formats at once, it lacks an interface to customize formats or add formats. This is fixed by adding the top-level option `formatConfigs` (attrsOf deferredModule). All format modules created under `config.formatConfigs` are mapped so their outputs are available under `config.formats` which has also been moved to the top-level (previously `config.system.formats`). Done: - add option `formatConfigs` - move option `system.formats` -> `formats` - add test for customizing a format
64 lines
1.6 KiB
Nix
64 lines
1.6 KiB
Nix
{
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config,
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lib,
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extendModules,
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...
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}: let
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inherit
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(lib)
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types
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;
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# attrs of all format modules from ./formats
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formatModules =
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lib.flip lib.mapAttrs' (builtins.readDir ./formats)
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(fname: type: {
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name = lib.removeSuffix ".nix" fname;
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value = ./formats + "/${fname}";
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});
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# function to evaluate a given format to a config
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evalFormat = formatModule:
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extendModules {
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modules = [
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./format-module.nix
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formatModule
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];
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};
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# evaluated configs for all formats
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allConfigs = lib.mapAttrs (formatName: evalFormat) config.formatConfigs;
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# attrset of formats to be exposed under config.system.formats
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formats = lib.flip lib.mapAttrs allConfigs (
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formatName: conf:
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conf.config.system.build.${conf.config.formatAttr}
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);
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in {
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_file = ./all-formats.nix;
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# This deliberate key makes sure this module will be deduplicated
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# regardless of the accessor path: either via flake's nixosModule
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# or as part of the nixos-generate command. These two store paths
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# of the module may differ and hence don't serve as a key
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key = "github:nix-community/nixos-generators/all-formats.nix";
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# declare option for exposing all formats
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options.formats = lib.mkOption {
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type = lib.types.lazyAttrsOf lib.types.raw;
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description = ''
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Different target formats generated for this NixOS configuratation.
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'';
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};
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options.formatConfigs = lib.mkOption {
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type = types.attrsOf types.deferredModule;
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};
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# expose all formats
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config.formats = formats;
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#
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config.formatConfigs = lib.flip lib.mapAttrs formatModules (name: module: {
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imports = [module];
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});
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}
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