os/lib/default.nix

{ lib, inputs, ... }: {
  # Configuration common to all Linux systems
  flake = {
    lib = let
      callLibs = file: import file {inherit lib;};
    in rec {
      ## Define your own library functions here!
      #id = x: x;
      ## Or in files, containing functions that take {lib}
      #foo = callLibs ./foo.nix;
      ## In configs, they can be used under "lib.our"

      deploy = import ./deploy.nix { inherit inputs lib; };
      addLocalHostname = callLibs ./add-local-hostname.nix;
      recursiveMerge = callLibs ./recursive-merge.nix;
      mkEmailAddress = account: domain: account + "@" + domain;
    };
  };
}