tjh.dev
nixpkgs mirror (for testing)
github.com/NixOS/nixpkgs
nix
1{
2 lib,
3 pkgs,
4 config,
5 extendModules,
6 ...
7}:
8{
9
10 options = {
11
12 system.build = {
13 noFacter = lib.mkOption {
14 type = lib.types.unspecified;
15 description = "A version of the system closure with facter disabled";
16 };
17 };
18
19 hardware.facter.debug = {
20 nvd = lib.mkOption {
21 type = lib.types.package;
22 description = ''
23 A shell application which will produce an nvd diff of the system closure with and without facter enabled.
24 '';
25 };
26 nix-diff = lib.mkOption {
27 type = lib.types.package;
28 description = ''
29 A shell application which will produce a nix-diff of the system closure with and without facter enabled.
30 '';
31 };
32 };
33
34 };
35
36 config.system.build = {
37 noFacter = extendModules {
38 modules = [
39 {
40 # we 'disable' facter by overriding the report and setting it to empty with one caveat: hostPlatform
41 config.hardware.facter.report = lib.mkForce {
42 system = config.nixpkgs.hostPlatform;
43 };
44 }
45 ];
46 };
47 };
48
49 config.hardware.facter.debug = {
50
51 nvd = pkgs.writeShellApplication {
52 name = "facter-nvd-diff";
53 runtimeInputs = [
54 config.nix.package
55 pkgs.nvd
56 ];
57 text = ''
58 nvd diff \
59 ${config.system.build.noFacter.config.system.build.toplevel} \
60 ${config.system.build.toplevel} \
61 "$@"
62 '';
63 };
64
65 nix-diff = pkgs.writeShellApplication {
66 name = "facter-nix-diff";
67 runtimeInputs = [
68 config.nix.package
69 pkgs.nix-diff
70 ];
71 text = ''
72 nix-diff \
73 ${config.system.build.noFacter.config.system.build.toplevel} \
74 ${config.system.build.toplevel} \
75 "$@"
76 '';
77 };
78
79 };
80
81}