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https://github.com/nix-community/flakelight.git
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4e9f53ff4e
This removes the manual configuration of which options are auto-loaded. Now all options are eligible except for "nixDir" and "_module" as those would cause inf recursions. Additionally, instead of setting name aliases in the nixDir module, a config option is added, enabling other modules to extend the aliases lists.
51 lines
1.7 KiB
Nix
51 lines
1.7 KiB
Nix
# flakelight -- Framework for simplifying flake setup
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# Copyright (C) 2023 Archit Gupta <archit@accelbread.com>
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# SPDX-License-Identifier: MIT
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{ config, lib, inputs, flakelight, moduleArgs, ... }:
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let
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inherit (builtins) mapAttrs;
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inherit (lib) foldl mapAttrsToList mkIf mkOption recursiveUpdate;
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inherit (lib.types) attrs lazyAttrsOf;
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inherit (flakelight) selectAttr;
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inherit (flakelight.types) optCallWith;
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# Avoid checking if toplevel is a derivation as it causes the nixos modules
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# to be evaluated.
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isNixos = x: x ? config.system.build.toplevel;
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mkNixos = hostname: cfg: inputs.nixpkgs.lib.nixosSystem (cfg // {
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specialArgs = {
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inherit inputs hostname;
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inputs' = mapAttrs (_: selectAttr cfg.system) inputs;
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} // cfg.specialArgs or { };
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modules = [ config.propagationModule ] ++ cfg.modules or [ ];
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});
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configs = mapAttrs
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(hostname: cfg: if isNixos cfg then cfg else mkNixos hostname cfg)
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config.nixosConfigurations;
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in
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{
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options.nixosConfigurations = mkOption {
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type = optCallWith moduleArgs (lazyAttrsOf (optCallWith moduleArgs attrs));
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default = { };
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};
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config = {
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outputs = mkIf (config.nixosConfigurations != { }) {
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nixosConfigurations = configs;
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checks = foldl recursiveUpdate { } (mapAttrsToList
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(n: v: {
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# Wrapping the drv is needed as computing its name is expensive
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# If not wrapped, it slows down `nix flake show` significantly
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${v.config.nixpkgs.system}."nixos-${n}" = v.pkgs.runCommand
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"check-nixos-${n}"
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{ } "echo ${v.config.system.build.toplevel} > $out";
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})
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configs);
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};
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nixDirAliases.nixosConfigurations = [ "nixos" ];
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};
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}
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