From 5dfd0c44857c32f600ea7b4e86db7377bb9d997f Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Sun, 25 Oct 2020 14:49:15 +0100
Subject: [PATCH] reuse evalConfig in default.nix

---
 default.nix | 39 +++++++++++----------------------------
 1 file changed, 11 insertions(+), 28 deletions(-)

diff --git a/default.nix b/default.nix
index 79085aa..a475b47 100644
--- a/default.nix
+++ b/default.nix
@@ -1,33 +1,21 @@
-{ nixpkgs ? <nixpkgs>, configuration ? <darwin-config>, system ? builtins.currentSystem
+{ nixpkgs ? <nixpkgs>
+, configuration ? <darwin-config>
+, lib ? pkgs.lib
 , pkgs ? import nixpkgs { inherit system; }
+, system ? builtins.currentSystem
 }:
 
 let
-  baseModules = import ./modules/module-list.nix;
-  modules = [ configuration packages ] ++ baseModules;
+  evalConfig = import ./eval-config.nix { inherit lib system; };
 
-  packages = { config, lib, pkgs, ... }: {
-    _file = ./default.nix;
-    config = {
-      _module.args.pkgs = import nixpkgs config.nixpkgs;
-      nixpkgs.system = system;
-    };
+  eval = evalConfig {
+    modules = [ configuration ];
+    inputs = { inherit nixpkgs; };
   };
 
-  eval = pkgs.lib.evalModules {
-    inherit modules;
-    args = { inherit baseModules modules; };
-    specialArgs = { modulesPath = ./modules; };
-    check = true;
-  };
-
-  # Was moved in nixpkgs #82751, so both need to be handled here until 20.03 is deprecated.
-  # https://github.com/NixOS/nixpkgs/commits/dcdd232939232d04c1132b4cc242dd3dac44be8c
-  _module = eval._module or eval.config._module;
-
   # The source code of this repo needed by the [un]installers.
-  nix-darwin = pkgs.lib.cleanSource (
-    pkgs.lib.cleanSourceWith {
+  nix-darwin = lib.cleanSource (
+    lib.cleanSourceWith {
       # We explicitly specify a name here otherwise `cleanSource` will use the
       # basename of ./.  which might be different for different clones of this
       # repo leading to non-reproducible outputs.
@@ -37,12 +25,7 @@ let
   );
 in
 
-{
-  inherit (_module.args) pkgs;
-  inherit (eval) options config;
-
-  system = eval.config.system.build.toplevel;
-
+eval // {
   installer = pkgs.callPackage ./pkgs/darwin-installer { inherit nix-darwin; };
   uninstaller = pkgs.callPackage ./pkgs/darwin-uninstaller { inherit nix-darwin; };
 }