Modular, context-aware and aspect-oriented dendritic Nix configurations.
Discussions: https://oeiuwq.zulipchat.com/join/nqp26cd4kngon6mo3ncgnuap/
den.oeiuwq.com
configurations
den
dendritic
nix
aspect
oriented
Test top-level contextual aspects. (#93)
See https://github.com/vic/den/discussions/91 for context.
See
[failure](https://github.com/vic/bugs-den/actions/runs/19377336327/job/55448108522)
for
[reproduction](https://github.com/vic/bugs-den/commit/f81dca61403c7a08e5381b61bcb2fedc1994efb4)
Support for top-level contextual aspects was added at
https://github.com/vic/flake-aspects/pull/14.
Closes #92.
authored by
GitHub
227451c9
5b49190b
+3
-3
templates/bogus/flake.lock
+3
-3
templates/bogus/flake.lock
···
18
18
},
19
19
"flake-aspects": {
20
20
"locked": {
21
-
"lastModified": 1762465224,
22
-
"narHash": "sha256-jfXLTwngKXwFOCVfCupHGcCw/OIpgy5lMYIF8KPfMN8=",
21
+
"lastModified": 1763284357,
22
+
"narHash": "sha256-mPMHkhpOIsj2lg+KIcapFd4uj2N/9mZZ6RZBo/p5O1c=",
23
23
"owner": "vic",
24
24
"repo": "flake-aspects",
25
-
"rev": "4cbae79bc642311f45c211f9c20d20226544b6f9",
25
+
"rev": "6a6d47f531ad57ac854cee689e84f2e28861ec49",
26
26
"type": "github"
27
27
},
28
28
"original": {
+3
-3
templates/default/flake.lock
+3
-3
templates/default/flake.lock
···
37
37
},
38
38
"flake-aspects": {
39
39
"locked": {
40
-
"lastModified": 1762465224,
41
-
"narHash": "sha256-jfXLTwngKXwFOCVfCupHGcCw/OIpgy5lMYIF8KPfMN8=",
40
+
"lastModified": 1763284357,
41
+
"narHash": "sha256-mPMHkhpOIsj2lg+KIcapFd4uj2N/9mZZ6RZBo/p5O1c=",
42
42
"owner": "vic",
43
43
"repo": "flake-aspects",
44
-
"rev": "4cbae79bc642311f45c211f9c20d20226544b6f9",
44
+
"rev": "6a6d47f531ad57ac854cee689e84f2e28861ec49",
45
45
"type": "github"
46
46
},
47
47
"original": {
+30
-9
templates/default/modules/aspects/alice.nix
+30
-9
templates/default/modules/aspects/alice.nix
···
1
-
{ den, ... }:
1
+
{ den, eg, ... }:
2
2
{
3
3
den.aspects.alice = {
4
-
# You can include other aspects, in this case some
5
-
# den included batteries that provide common configs.
4
+
5
+
# Alice can include other aspects.
6
+
# For small, private one-shot aspects, use let-bindings like here.
7
+
# for more complex or re-usable ones, define on their own modules,
8
+
# as part of any aspect-subtree.
6
9
includes =
7
10
let
8
-
# deadnix: skip # demo: enable <> on lexical scope
11
+
# deadnix: skip # not required, showcasing angle-brackets syntax.
9
12
inherit (den.lib) __findFile;
10
13
11
14
customEmacs.homeManager =
···
16
19
};
17
20
in
18
21
[
22
+
# from local bindings.
19
23
customEmacs
20
-
<eg/autologin>
24
+
# from the aspect tree, cooper example is defined bellow
25
+
den.aspects.cooper
26
+
den.aspects.setHost
27
+
# from the `eg` namespace.
28
+
eg.autologin
29
+
# den included batteries that provide common configs.
21
30
<den/primary-user> # alice is admin always.
22
31
(<den/user-shell> "fish") # default user shell
23
32
];
···
26
35
nixos =
27
36
{ pkgs, ... }:
28
37
{
29
-
users.users.alice = {
30
-
description = "Alice Cooper";
31
-
packages = [ pkgs.vim ];
32
-
};
38
+
users.users.alice.packages = [ pkgs.vim ];
33
39
};
34
40
35
41
# Alice home-manager.
···
46
52
nixos.programs.nh.enable = host.name == "igloo";
47
53
};
48
54
};
55
+
56
+
# This is a context-aware aspect, that emits configurations
57
+
# **anytime** at least the `user` data is in context.
58
+
# read more at https://vic.github.io/den/context-aware.html
59
+
den.aspects.cooper =
60
+
{ user, ... }:
61
+
{
62
+
nixos.users.users.${user.userName}.description = "Alice Cooper";
63
+
};
64
+
65
+
den.aspects.setHost =
66
+
{ host, ... }:
67
+
{
68
+
networking.hostName = host.hostName;
69
+
};
49
70
}
+3
-3
templates/examples/flake.lock
+3
-3
templates/examples/flake.lock
···
37
37
},
38
38
"flake-aspects": {
39
39
"locked": {
40
-
"lastModified": 1762148645,
41
-
"narHash": "sha256-NfxjuuA1p7Sn+OX0HD+p6LepxRFYmahaybvN7+D3GZQ=",
40
+
"lastModified": 1763284357,
41
+
"narHash": "sha256-mPMHkhpOIsj2lg+KIcapFd4uj2N/9mZZ6RZBo/p5O1c=",
42
42
"owner": "vic",
43
43
"repo": "flake-aspects",
44
-
"rev": "895538b1372ecbe4966db85553b11eb64a72086c",
44
+
"rev": "6a6d47f531ad57ac854cee689e84f2e28861ec49",
45
45
"type": "github"
46
46
},
47
47
"original": {
+47
templates/examples/modules/_example/ci/top-level-parametric.nix
+47
templates/examples/modules/_example/ci/top-level-parametric.nix
···
1
+
# it is possible for top-level aspects directly under
2
+
# den.aspects to take a context argument.
3
+
{ den, lib, ... }:
4
+
let
5
+
# A module to test that toplevel had context.
6
+
topLevel = name: {
7
+
config.tops = name;
8
+
options.tops = lib.mkOption { type = lib.types.str; };
9
+
};
10
+
in
11
+
{
12
+
13
+
den.aspects.toplevel-user =
14
+
{ user, ... }:
15
+
{
16
+
nixos.imports = [ (topLevel user.name) ];
17
+
};
18
+
19
+
den.aspects.toplevel-host =
20
+
{ host, ... }:
21
+
{
22
+
homeManager.imports = [ (topLevel host.name) ];
23
+
};
24
+
25
+
den.aspects.alice.includes = [
26
+
den.aspects.toplevel-host
27
+
den.aspects.toplevel-user
28
+
];
29
+
30
+
perSystem =
31
+
{
32
+
checkCond,
33
+
alice-at-rockhopper,
34
+
rockhopper,
35
+
...
36
+
}:
37
+
{
38
+
checks.alice-toplevel-user = checkCond "alice toplevel param aspect" (
39
+
rockhopper.config.tops == "alice"
40
+
);
41
+
42
+
checks.alice-toplevel-host = checkCond "alice toplevel param aspect" (
43
+
alice-at-rockhopper.tops == "rockhopper"
44
+
);
45
+
};
46
+
47
+
}