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 template/minimal (#143)
minimal flake uses no flake-parts.
authored by
Victor Borja
and committed by
GitHub
7431d485
42e09c12
+71
-66
+24
.github/workflows/test.yml
+24
.github/workflows/test.yml
···
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- uses: DeterminateSystems/magic-nix-cache-action@v13
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- uses: actions/checkout@v4
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- run: sed -i 's@# den.outPath@den.outPath@' templates/noflake/with-inputs.nix
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- run: |
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cat <<-EOF > templates/noflake/modules/ci-runtime.nix
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{
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_module.args.CI = true;
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}
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EOF
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git add templates/noflake/modules/ci-runtime.nix
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- run: cd templates/noflake && nix-build -A nixosConfigurations.igloo.config.system.build.toplevel
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minimal:
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needs: [non-draft]
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name: minimal
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runs-on: ubuntu-latest
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steps:
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- uses: wimpysworld/nothing-but-nix@main
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- uses: cachix/install-nix-action@v31
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- uses: DeterminateSystems/magic-nix-cache-action@v13
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- uses: actions/checkout@v4
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- run: |
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cat <<-EOF > templates/minimal/modules/ci-runtime.nix
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{
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_module.args.CI = true;
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}
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EOF
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git add templates/minimal/modules/ci-runtime.nix
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- run: nix flake check ./templates/minimal --override-input den github:$GITHUB_REPOSITORY/$GITHUB_SHA
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template:
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needs: [non-draft]
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strategy:
+9
modules/aspects/provides/ci-noboot.nix
+9
modules/aspects/provides/ci-noboot.nix
+11
modules/output.nix
+11
modules/output.nix
···
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+
{ inputs, lib, ... }:
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if inputs ? flake-parts then
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{ }
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else
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{
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# NOTE: Currently Den needs a top-level attribute where to place configurations,
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# by default it is the `flake` attribute, even if Den uses no flake-parts at all.
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options.flake = lib.mkOption {
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type = lib.types.submodule { freeformType = lib.types.anything; };
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};
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}
+1
-1
templates/bogus/.github/workflows/test.yml
+1
-1
templates/bogus/.github/workflows/test.yml
···
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- uses: wimpysworld/nothing-but-nix@main
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if: matrix.os == 'ubuntu-latest'
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- uses: cachix/install-nix-action@v31
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-
- uses: DeterminateSystems/magic-nix-cache-action@13
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- uses: DeterminateSystems/magic-nix-cache-action@v13
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- uses: actions/checkout@v5
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- run: nix flake metadata
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- run: nix flake check
+3
-3
templates/bogus/modules/test-base.nix
+3
-3
templates/bogus/modules/test-base.nix
···
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-
{ den, ... }:
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{ den, lib, ... }:
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{
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den.default.nixos.system.stateVersion = "25.11";
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den.default.homeManager.home.stateVersion = "25.11";
···
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];
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den.aspects.no-boot.nixos = {
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-
boot.loader.grub.enable = false;
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fileSystems."/".device = "/dev/fake";
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boot.loader.grub.enable = lib.mkForce false;
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fileSystems."/".device = lib.mkForce "/dev/fake";
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};
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}
-20
templates/default/modules/ci.nix
-20
templates/default/modules/ci.nix
···
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-
{ config, ... }:
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{
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den.default.includes = [
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-
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# USER TODO: Remove.
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(
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# This is a conditional aspect to disable boot during CI on all hosts.
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if config ? _module.args.CI then
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{
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nixos.fileSystems."/".device = "/dev/fake";
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nixos.boot.loader.grub.enable = false;
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}
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else
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{ }
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)
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];
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-
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}
-21
templates/minimal/flake.lock
-21
templates/minimal/flake.lock
···
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"type": "github"
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}
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},
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-
"flake-parts": {
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"inputs": {
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"nixpkgs-lib": [
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"nixpkgs"
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]
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},
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"locked": {
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"lastModified": 1762980239,
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"narHash": "sha256-8oNVE8TrD19ulHinjaqONf9QWCKK+w4url56cdStMpM=",
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"owner": "hercules-ci",
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"repo": "flake-parts",
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"rev": "52a2caecc898d0b46b2b905f058ccc5081f842da",
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"type": "github"
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},
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"original": {
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"owner": "hercules-ci",
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"repo": "flake-parts",
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"type": "github"
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}
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},
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"import-tree": {
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"locked": {
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"lastModified": 1763263999,
···
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"inputs": {
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"den": "den",
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"flake-aspects": "flake-aspects",
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"flake-parts": "flake-parts",
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"import-tree": "import-tree",
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"nixpkgs": "nixpkgs"
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}
+6
-4
templates/minimal/flake.nix
+6
-4
templates/minimal/flake.nix
···
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{
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outputs = inputs: inputs.flake-parts.lib.mkFlake { inherit inputs; } (inputs.import-tree ./modules);
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outputs =
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inputs:
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(inputs.nixpkgs.lib.evalModules {
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modules = [ (inputs.import-tree ./modules) ];
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specialArgs = { inherit inputs; };
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}).config.flake;
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inputs = {
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nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
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flake-parts.url = "github:hercules-ci/flake-parts";
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flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
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-
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import-tree.url = "github:vic/import-tree";
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flake-aspects.url = "github:vic/flake-aspects";
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den.url = "github:vic/den";
+14
-2
templates/minimal/modules/den.nix
+14
-2
templates/minimal/modules/den.nix
···
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{ inputs, den, ... }:
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{
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systems = builtins.attrNames den.hosts;
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# we can import this flakeModule even if we dont have flake-parts as input!
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imports = [ inputs.den.flakeModule ];
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den.hosts.x86_64-linux.igloo.users.tux = { };
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den.aspects.igloo = { };
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+
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den.aspects.igloo = {
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nixos =
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{ pkgs, ... }:
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{
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environment.systemPackages = [ pkgs.hello ];
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passthru = { };
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};
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};
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+
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den.aspects.tux = {
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includes = [ den.provides.primary-user ];
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};
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}
-11
templates/noflake/modules/compat.nix
-11
templates/noflake/modules/compat.nix
···
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-
{ inputs, lib, ... }:
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{
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# we can import this flakeModule even if we dont have flake-parts as input!
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imports = [ inputs.den.flakeModule ];
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-
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# NOTE: Currently Den needs a top-level attribute where to place configurations,
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# by default it is the `flake` attribute, even if Den uses no flake-parts at all.
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options.flake = lib.mkOption {
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type = lib.types.submodule { freeformType = lib.types.anything; };
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};
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}
+3
-4
templates/noflake/modules/den.nix
+3
-4
templates/noflake/modules/den.nix
···
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1
{ inputs, ... }:
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{
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# we can import this flakeModule even if we dont have flake-parts as input!
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imports = [ inputs.den.flakeModule ];
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+
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# tux user on igloo host.
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den.hosts.x86_64-linux.igloo.users.tux = { };
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···
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nixos =
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{ pkgs, ... }:
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{
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-
# remove these for a real bootable host
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boot.loader.grub.enable = false;
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fileSystems."/".device = "/dev/fake";
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passthru = { };
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-
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environment.systemPackages = [
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pkgs.vim
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];