nix-config/home-manager/default.nix

{ config, desktop, hostname, inputs, lib, outputs, pkgs, stateVersion, username, ... }:
let
  inherit (pkgs.stdenv) isDarwin;
in
{
  # Only import desktop configuration if the host is desktop enabled
  # Only import user specific configuration if they have bespoke settings
  imports = [
    # If you want to use modules your own flake exports (from modules/home-manager):
    outputs.homeManagerModules.pass-secret-service

    # Or modules exported from other flakes (such as nix-colors):
    # inputs.nix-colors.homeManagerModules.default

    # You can also split up your configuration and import pieces of it here:
    ./_mixins/console
  ]
  ++ lib.optional (builtins.isPath (./. + "/_mixins/users/${username}")) ./_mixins/users/${username}
  ++ lib.optional (builtins.pathExists (./. + "/_mixins/users/${username}/hosts/${hostname}.nix")) ./_mixins/users/${username}/hosts/${hostname}.nix
  ++ lib.optional (desktop != null) ./_mixins/desktop;

  home = {
    activation.report-changes = config.lib.dag.entryAnywhere ''
      ${pkgs.nvd}/bin/nvd diff $oldGenPath $newGenPath
    '';
    homeDirectory = if isDarwin then "/Users/${username}" else "/home/${username}";
    sessionPath = [ "$HOME/.local/bin" ];
    sessionVariables = {
      FLAKE = "$HOME/ws/nix-config";
    };
    inherit stateVersion;
    inherit username;
  };

  nixpkgs = {
    # You can add overlays here
    overlays = [
      # Add overlays your own flake exports (from overlays and pkgs dir):
      outputs.overlays.additions
      outputs.overlays.modifications
      outputs.overlays.unstable-packages

      # You can also add overlays exported from other flakes:
      inputs.agenix.overlays.default

      # Or define it inline, for example:
      # (final: prev: {
      #   hi = final.hello.overrideAttrs (oldAttrs: {
      #     patches = [ ./change-hello-to-hi.patch ];
      #   });
      # })
    ];
    # Configure your nixpkgs instance
    config = {
      # Disable if you don't want unfree packages
      allowUnfree = true;
      # Workaround for https://github.com/nix-community/home-manager/issues/2942
      allowUnfreePredicate = _: true;
    };
  };

  nix = {
    # This will add each flake input as a registry
    # To make nix3 commands consistent with your flake
    registry = lib.mapAttrs (_: value: { flake = value; }) inputs;

    package = pkgs.unstable.nix;
    settings = {
      auto-optimise-store = true;
      experimental-features = [ "nix-command" "flakes" ];
      # Avoid unwanted garbage collection when using nix-direnv
      keep-outputs = true;
      keep-derivations = true;
      warn-dirty = false;
    };
  };
}