{
  description = "My customised build of Iosevka font";

  nixConfig = {
    extra-substituters = [ "https://nix.xenia.me.uk" ];
    extra-trusted-public-keys = [ "nix.xenia.me.uk:VaQu+8hshk7aSbW3z91pgkKbYeAcO3Q0AomqP8RaaLc=" ];
  };

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
  };

  outputs =
    { nixpkgs, ... }:
    let
      system = "x86_64-linux";
      pkgs = import nixpkgs { inherit system; };
      result = pkgs.callPackage ./derivation.nix { };
    in
    {
      names = import ./names.nix;
      packages.${system} = {
        inherit (result) iosevka-custom-aile iosevka-custom-etoile iosevka-custom-nerdfont;
        default = result.iosevka-custom-nerdfont;
      };
    };
}