Building python package dash-daq: no rule to make target

Hi, I am not very experienced in building python packages, but I try to set up a nix shell with

    dash-daq = pkgs.python39Packages.buildPythonPackage rec {
        pname = "dash_daq";
        version = "0.5.0";
        format = "other";

        src = python39.pkgs.fetchPypi {
            inherit pname version;
            sha256 = "a1d85b6799f7b885652fbc44aebdb58c41254616a8d350b943beeb42ade4256a";
        buildInputs = [ python39Packages.dash python39Packages.setuptools ];
        dontWrapPythonPrograms = false;
        doCheck = false;
        meta = with lib; {
            homepage = "";
            description = "DAQ components for Dash";

This gives me

building '/nix/store/hh5xjmbfvnl7fn2rzzph3pxi4vxd9gwk-python3.9-dash_daq-0.5.0.drv'...
Sourcing python-remove-tests-dir-hook
Using pythonImportsCheckPhase
Sourcing python-namespaces-hook
unpacking sources
unpacking source archive /nix/store/f7qxbyslx054fhmnwn7cljxi0il34h2d-dash_daq-0.5.0.tar.gz
source root is dash_daq-0.5.0
setting SOURCE_DATE_EPOCH to timestamp 1587997355 of file dash_daq-0.5.0/setup.cfg
patching sources
no configure script, doing nothing
no Makefile, doing nothing
install flags: SHELL=/nix/store/kxj6cblcsd1qcbbxlmbswwrn89zcmgd6-bash-4.4-p23/bin/bash install
make: *** No rule to make target 'install'.  Stop.
builder for '/nix/store/hh5xjmbfvnl7fn2rzzph3pxi4vxd9gwk-python3.9-dash_daq-0.5.0.drv' failed with exit code 2

I am not sure what it means and how I can proceed. Can anybody help?

Why are you using format = "other";?

Ah yes, it was a leftover from another drv. That solved it, thanks!