Files
clan-core/lib
Johannes Kirschbauer 05c45371af feat(buildInventory): move instance resolution into buildInventory
Such that buildClan doesn't have to compose the results
buildInventory should be more self contained. But it is NOT meant a
public API! use buildClan argument 'inventory' instead
2025-04-09 17:31:35 +02:00
..
2024-07-09 15:23:26 +02:00

ClanLib

This folder is supposed to contain clan specific nix functions.

Such as:

  • build-clan function
  • select
  • build-inventory function
  • json-schema-converter

Structure

Similar to nixpkgs/lib this produces a recursive attribute set in a fixed-point. Functions within lib can depend on each other to create new abstractions.

Conventions

Note: This is not consistently enforced yet. If you start a new feature, or refactoring/touching existing ones, please help us to move towards the below illustrated.

A single feature-set/module may be organized like this:

#     ↓ The final clanLib
{lib, clanLib, ...}:
# ↓ portion to add to clanLib
{
    inventory.resolveTags = tags: inventory.machines; # implementation
    inventory.buildMachines = x: clanLib.inventory.resolveTags x; # implementation
}

Every bigger feature should live in a subfolder with the feature name. It should contain two files:

  • impl.nix
  • test.nix
  • Everything else may be adopted as needed.
Example filetree
.
├── default.nix
├── build-clan
│   ├── default.nix
│   └── test.nix
└── inventory
    ├── default.nix
    ├── services-subfeature
    │   ├── default.nix
    │   └── test.nix
    ├── instances-subfeature # <- We immediately see that this feature is not tested on itself.
    │   └── default.nix
    └── test.nix
# default.nix
{lib, clanLib, ...}:
{
    inventory.resolveTags = import ./resolveTags { inherit lib clanLib; };
}

Testing

For testing we use nix-unit

TODO: define a helper that automatically hooks up tests in flake.legacyPackages and a corresponding buildable checks attribute