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
forward test for example nix class -> hm and os
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docs/src/content/docs/reference/batteries.mdx
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docs/src/content/docs/reference/batteries.mdx
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## forward
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Creates custom Nix classes by forwarding configs between classes.
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([source](https://github.com/vic/den/blob/main/modules/aspects/provides/forward.nix) · [tests](https://github.com/vic/den/blob/main/templates/ci/modules/features/forward.nix) · [usage guide](/guides/custom-classes/))
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([source](https://github.com/vic/den/blob/main/modules/aspects/provides/forward.nix) · [tests](https://github.com/vic/den/blob/main/templates/ci/modules/features/forward-from-custom-class.nix) · [usage guide](/guides/custom-classes/))
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```nix
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den._.forward {
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docs/src/content/docs/tutorials/ci.md
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docs/src/content/docs/tutorials/ci.md
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|-----------|---------------|
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| [angle-brackets.nix](https://github.com/vic/den/blob/main/templates/ci/modules/features/angle-brackets.nix) | All bracket resolution paths |
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| [namespaces.nix](https://github.com/vic/den/blob/main/templates/ci/modules/features/namespaces.nix) | Local, remote, merged namespaces |
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| [forward.nix](https://github.com/vic/den/blob/main/templates/ci/modules/features/forward.nix) | Custom class forwarding |
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| [forward-from-custom-class.nix](https://github.com/vic/den/blob/main/templates/ci/modules/features/forward-from-custom-class.nix) | Custom class forwarding |
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| [homes.nix](https://github.com/vic/den/blob/main/templates/ci/modules/features/homes.nix) | Standalone Home-Manager configs |
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| [schema-base-modules.nix](https://github.com/vic/den/blob/main/templates/ci/modules/features/schema-base-modules.nix) | `den.base.{host,user,home,conf}` |
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modules/aspects/provides/forward.nix
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modules/aspects/provides/forward.nix
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See also: https://github.com/vic/den/issues/160, https://github.com/vic/flake-aspects/pull/31
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'';
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forward =
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forwardEach = fwd: {
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includes = map (item: forwardOne (fwd // { each = [ item ]; })) fwd.each;
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};
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forwardOne =
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{
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guard ? null,
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adaptArgs ? null,
···
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{
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den.provides.forward = {
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inherit description;
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__functor = _self: forward;
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__functor = _self: forwardEach;
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};
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}
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templates/ci/modules/features/forward-from-custom-class.nix
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templates/ci/modules/features/forward-from-custom-class.nix
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{ denTest, ... }:
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{
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flake.tests.forward = {
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flake.tests.forward-custom-class = {
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test-forward-custom-class-to-nixos = denTest (
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{
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expr = igloo.home-manager.users.tux.programs.git.userEmail;
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expected = "root@linux.com";
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}
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);
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test-custom-nix-class-fowards-to-both-hm-and-nixos = denTest (
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{
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den,
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lib,
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igloo,
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...
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}:
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let
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forwarded =
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{ class, aspect-chain }:
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den._.forward {
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each = [
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"nixos"
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"homeManager"
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];
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fromClass = _: "nix";
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intoClass = lib.id;
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intoPath = _: [ "nix" ];
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fromAspect = _: lib.head aspect-chain;
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adaptArgs =
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{ config, ... }:
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{
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osConfig = config;
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};
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};
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in
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{
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den.hosts.x86_64-linux.igloo.users.tux = { };
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den.aspects.igloo.homeManager.home.stateVersion = "25.11";
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den.aspects.tux = {
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includes = [ forwarded ];
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nix.settings.allowed-users = [ "tux" ];
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};
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expr = {
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os = igloo.nix.settings.allowed-users;
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hm = igloo.home-manager.users.tux.nix.settings.allowed-users;
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};
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expected = {
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os = [ "tux" ];
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hm = [ "tux" ];
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};
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}
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);
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