How to use new flake overlays

[willruggiano]

The new-ish way of defining overlays is like so;

{
   overlays.default = final: prev: {...};
}

but using overlaysBuilder (seemingly) doesn't make it easy to then use overlays defined this way.

channels.nixpkgs.overlaysBuilder = channels: [
  inputs.some-overlay.overlays.default  # doesn't work; no such attribute
];

[willruggiano]

Hmm. Seems that overlays.default is "system agnostic", so simply defining it outside of a eachDefaultSystem solves this.

eachDefaultSystem (system: { ... }) // {
  overlays.default = ...;
};

[gytis-ivaskevicius]

Yeah, sorry. Forgot to migrate to the new schema