pyrox.dev
1{ config, lib, pkgs, ... }:
2
3with lib;
4
5let
6 isConfig = x:
7 builtins.isAttrs x || builtins.isFunction x;
8
9 optCall = f: x:
10 if builtins.isFunction f
11 then f x
12 else f;
13
14 mergeConfig = lhs_: rhs_:
15 let
16 lhs = optCall lhs_ { inherit pkgs; };
17 rhs = optCall rhs_ { inherit pkgs; };
18 in
19 lhs // rhs //
20 optionalAttrs (lhs ? packageOverrides) {
21 packageOverrides = pkgs:
22 optCall lhs.packageOverrides pkgs //
23 optCall (attrByPath ["packageOverrides"] ({}) rhs) pkgs;
24 };
25
26 configType = mkOptionType {
27 name = "nixpkgs config";
28 check = traceValIfNot isConfig;
29 merge = args: fold (def: mergeConfig def.value) {};
30 };
31
32in
33
34{
35 options = {
36
37 nixpkgs.config = mkOption {
38 default = {};
39 example = literalExample
40 ''
41 { firefox.enableGeckoMediaPlayer = true;
42 packageOverrides = pkgs: {
43 firefox60Pkgs = pkgs.firefox60Pkgs.override {
44 enableOfficialBranding = true;
45 };
46 };
47 }
48 '';
49 type = configType;
50 description = ''
51 The configuration of the Nix Packages collection. (For
52 details, see the Nixpkgs documentation.) It allows you to set
53 package configuration options, and to override packages
54 globally through the <varname>packageOverrides</varname>
55 option. The latter is a function that takes as an argument
56 the <emphasis>original</emphasis> Nixpkgs, and must evaluate
57 to a set of new or overridden packages.
58 '';
59 };
60
61 nixpkgs.system = mkOption {
62 type = types.str;
63 example = "i686-linux";
64 description = ''
65 Specifies the Nix platform type for which NixOS should be built.
66 If unset, it defaults to the platform type of your host system.
67 Specifying this option is useful when doing distributed
68 multi-platform deployment, or when building virtual machines.
69 '';
70 };
71
72 };
73
74 config = {
75 _module.args.pkgs = import ../../.. {
76 system = config.nixpkgs.system;
77
78 inherit (config.nixpkgs) config;
79 };
80 };
81}