I'm currently trying to package a python package called entangled.py, two of its dependencies aren't in the nixpkgs so I also packaged them. Now I'm trying to package the entangled with these two local packages but idk how to actually use them, rn i do this (using buildPythonPackage):

buildPythonPackage rec {
  # ...
  dependencies = [
    py
    filelock
    rich
    rich-argparse
    tomlkit
    copier
    (callPackage ../brei/package.nix)
    pyyaml
    (callPackage ../repl-session/package.nix)
    msgspec
    click
    rich-click
    typeguard
    watchfiles
  ];
  # ...
}

but it returns me this error:

error:
       … while evaluating the attribute 'drvPath'
         at /nix/store/ln4j1iqnnzs2ynx2cr88bdh65fmds2aq-source/lib/customisation.nix:446:7:
          445|     // {
          446|       drvPath =
             |       ^
          447|         assert condition;

       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: Dependency is not of a valid type: element 7 of propagatedBuildInputs for python3.13-entangled-cli-2.4.

obviously this is only for testing if the package builds and works correctly, i don't want to send a broken package

SOLUTION: kinda stupid of me lol, i need to add an empty set after the path like so: (callPackage path/to/package { })
also if u're using with import <nixpkgs>;, remove that too