85 lines
3.1 KiB
Nix
85 lines
3.1 KiB
Nix
{
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core-inputs,
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user-inputs,
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snowfall-lib,
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snowfall-config,
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}: let
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inherit (builtins) baseNameOf;
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inherit (core-inputs.nixpkgs.lib) foldl mapAttrs hasPrefix hasSuffix isFunction splitString tail;
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user-modules-root = snowfall-lib.fs.get-snowfall-file "modules";
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in {
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module = {
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## Create flake output modules.
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## Example Usage:
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## ```nix
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## create-modules { src = ./my-modules; overrides = { inherit another-module; }; alias = { default = "another-module" }; }
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## ```
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## Result:
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## ```nix
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## { another-module = ...; my-module = ...; default = ...; }
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## ```
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#@ Attrs -> Attrs
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create-modules = {
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src ? "${user-modules-root}/nixos",
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overrides ? {},
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alias ? {},
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}: let
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user-modules = snowfall-lib.fs.get-default-nix-files-recursive src;
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create-module-metadata = module: {
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name = let
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path-name = builtins.replaceStrings [(builtins.toString src) "/default.nix"] ["" ""] (builtins.unsafeDiscardStringContext module);
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in
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if hasPrefix "/" path-name
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then builtins.substring 1 ((builtins.stringLength path-name) - 1) path-name
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else path-name;
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path = module;
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};
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modules-metadata = builtins.map create-module-metadata user-modules;
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merge-modules = modules: metadata:
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modules
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// {
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# NOTE: home-manager *requires* modules to specify named arguments or it will not
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# pass values in. For this reason we must specify things like `pkgs` as a named attribute.
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${metadata.name} = args @ {pkgs, ...}: let
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system = args.system or args.pkgs.stdenv.hostPlatform.system;
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target = args.target or system;
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format = let
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virtual-system-type = snowfall-lib.system.get-virtual-system-type target;
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in
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if virtual-system-type != ""
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then virtual-system-type
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else if snowfall-lib.system.is-darwin target
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then "darwin"
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else "linux";
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# Replicates the specialArgs from Snowfall Lib's system builder.
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modified-args =
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args
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// {
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inherit system target format;
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virtual = args.virtual or (snowfall-lib.system.get-virtual-system-type target != "");
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systems = args.systems or {};
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lib = snowfall-lib.internal.system-lib;
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pkgs = user-inputs.self.pkgs.${system}.nixpkgs;
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inputs = snowfall-lib.flake.without-src user-inputs;
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namespace = snowfall-config.namespace;
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};
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imported-user-module = import metadata.path;
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user-module =
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if isFunction imported-user-module
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then imported-user-module modified-args
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else imported-user-module;
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in
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user-module // {_file = metadata.path;};
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};
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modules-without-aliases = foldl merge-modules {} modules-metadata;
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aliased-modules = mapAttrs (name: value: modules-without-aliases.${value}) alias;
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modules = modules-without-aliases // aliased-modules // overrides;
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in
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modules;
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};
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}
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