{
inputs.nixpkgs.url = "github:NixOS/nixpkgs/b69f140a8028e4718bde4e5082f8df38e50b7971";
inputs.flake-utils.url = "github:numtide/flake-utils";
outputs = inputs: let
  remoteNixpkgsPatches = [
    /*
    { meta.description = "nixos-install: add support for inputs";
      url = "https://github.com/NixOS/nixpkgs/pull/95194.diff";
      sha256 = "sha256-R6LAHDM8FNQxsql5fiV16aDapKtZ7H/Q04pz1wjnSqQ";
    }
    */
  ];
  localNixpkgsPatches = [
  ];
  originPkgs = inputs.nixpkgs.legacyPackages."x86_64-linux";
  nixpkgsPath = originPkgs.applyPatches {
    name = "nixpkgs-patched";
    src = inputs.nixpkgs.outPath;
    patches = map originPkgs.fetchpatch remoteNixpkgsPatches ++ localNixpkgsPatches;
    postPatch = ''
      patch=$(printf '%s\n' ${builtins.concatStringsSep " "
         (map (p: p.sha256) remoteNixpkgsPatches ++ localNixpkgsPatches)} |
        sort | sha256sum | cut -c -7)
      echo "+patch-$patch" >.version-suffix
    '';
  };
  lib = originPkgs.lib;
  in {
  nixosConfigurations.oignon =
    let machineName = "oignon"; in
    #import (nixpkgsPath + "/nixos/lib/eval-config.nix") {
    inputs.nixpkgs.lib.nixosSystem {
      system = "x86_64-linux";
      extraArgs = {
        inherit machineName inputs;
        machines = inputs.self.nixosConfigurations;
      };
      modules = [
        ({ pkgs, ... }: {
          nix.registry.nixpkgs.flake = inputs.nixpkgs;
          nix.package = pkgs.nixFlakes;
          nix.extraOptions = "experimental-features = nix-command flakes";
          #nixpkgs.overlays = import nixpkgs/overlays.nix;
          /*
          system.nixos.versionSuffix = ".${
            lib.substring 0 8 (inputs.self.lastModifiedDate or inputs.self.lastModified)}.${
            inputs.self.shortRev or "dirty"}";
          system.nixos.revision = lib.mkIf (inputs.self ? rev) inputs.self.rev;
          */
          # Let 'nixos-version --json' know about the Git revision of this flake.
          system.configurationRevision = lib.mkIf (inputs.self ? rev) inputs.self.rev;
          /*
          system.configurationRevision =
            if inputs.self ? rev
            then inputs.self.rev
            else throw "Refusing to build from a dirty Git tree!";
          */
        })
        (import (./machines + "/${machineName}.nix"))
        inputs.nixpkgs.nixosModules.notDetected
      ];
    };
  } //
  inputs.flake-utils.lib.eachDefaultSystem (system:
    #let pkgs = inputs.nixpkgs.legacyPackages.${system}; in
    let
    pkgs = import nixpkgsPath {
      inherit system;
      config = {}; # Make the config pure, ignoring user's config.
      #overlays = import nixpkgs/overlays.nix;
    }; in {
      devShell = import ./shell.nix { inherit pkgs; };
    }
  );
}