Modular, context-aware and aspect-oriented dendritic Nix configurations.
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configurations
den
dendritic
nix
aspect
oriented
1{
2 lib,
3 inputs,
4 config,
5 ...
6}:
7let
8 den.lib = inputs.target.lib { inherit inputs lib config; };
9 takes = den.lib.canTake;
10
11 flake.tests."test exactly fails" = {
12 expr = takes.exactly {
13 a = 1;
14 b = 2;
15 } ({ a }: a);
16 expected = false;
17 };
18
19 flake.tests."test exactly succeeds" = {
20 expr = takes.exactly { a = 1; } ({ a }: a);
21 expected = true;
22 };
23
24 flake.tests."test function with no named arguments can take anything" = {
25 expr = takes { } (x: x);
26 expected = true;
27 };
28
29 flake.tests."test function called with non attrs" = {
30 expr = takes 22 ({ host }: [ host ]);
31 expected = false;
32 };
33
34 flake.tests."test function missing required attr" = {
35 expr = takes { } ({ host }: [ host ]);
36 expected = false;
37 };
38
39 flake.tests."test function satisfied required attr" = {
40 expr = takes {
41 host = 1;
42 } ({ host, ... }: [ host ]);
43 expected = true;
44 };
45
46 flake.tests."test function missing second required attr" = {
47 expr =
48 takes
49 {
50 host = 1;
51 }
52 (
53 { host, user }:
54 [
55 host
56 user
57 ]
58 );
59 expected = false;
60 };
61
62 flake.tests."test function optional second attr" = {
63 expr =
64 takes
65 {
66 host = 1;
67 foo = 9;
68 }
69 (
70 {
71 host,
72 user ? 0,
73 }:
74 [
75 host
76 user
77 ]
78 );
79 expected = true;
80 };
81
82in
83{
84 inherit flake;
85}