[home manager] Is there a way to automatically import all .nix files in a directory?

I'm trying out Nix Home Manager and learning its features little by little.
I've been trying to split my app configurations into their own files now and saw that many do the following:

Make a directory containing all the app specific configurations:

programs/
└── helix.nix

Make a catch-all file default.nix that selectively imports the files inside:

programs/
├── default.nix
└── helix.nix

Content:

{
  imports = [
    ./helix.nix
  ];
}

Import the directory (picking up the default.nix) within the home-manager configuration:

{
  # some stuff...
  imports = [
    ./programs
  ];
 # some other stuff...
}

I'd like to avoid having to write each and every file I'll create into the imports of default.nix, that kinda defeats the point of separating it if I'll have to specify everything anyway, so is there a way to do so? I haven't found different ways to do this in various Nix discussions.

Example I'm looking at: https://github.com/fufexan/dotfiles/blob/main/home/terminal/default.nix

My own repository: https://codeberg.org/quazar-omega/home-manager-config

letThemPlay , 1 month ago

I do have a function that I cribbed from somewhere, unfortunately I didn't note down the source at the time so can't give them due credit here.

filterNixFiles = k: v: v == "regular" && lib.hasSuffix ".nix" k;

importNixFiles = path: (lib.lists.forEach (lib.mapAttrsToList (name: _: path + ("/" + name)) (lib.filterAttrs filterNixFiles (builtins.readDir path)))) import;

Then used as normal

modules = [ home-manager.nixosModules.home-manager vscode-server.nixosModule ] ++ (importNixFiles ./hosts/required) ++ (importNixFiles ./hosts/machines/${hostname})

Edit

Apologies for formatting on mobile

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