Error with fgspectra when running example

[pengenix]

I have successfully installed mflike, however when I run the example - cobaya-run examples/mflike_example.yaml -p ../packages, I receive the following error:

Traceback (most recent call last):
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/bin/cobaya-run", line 8, in <module>
    sys.exit(run_script())
             ~~~~~~~~~~^^
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/cobaya/run.py", line 198, in run_script
    run(info, **arguments.__dict__)
    ~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/cobaya/run.py", line 132, in run
    sampler = sampler_class(updated_info["sampler"][sampler_name],
                            model, out, name=sampler_name,
                            packages_path=info.get("packages_path"))
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/cobaya/sampler.py", line 279, in __init__
    self.initialize()
    ~~~~~~~~~~~~~~~^^
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/cobaya/samplers/mcmc/mcmc.py", line 167, in initialize
    initial_point, results = self.model.get_valid_point(
                             ~~~~~~~~~~~~~~~~~~~~~~~~~~^
        max_tries=int(min(self.max_tries.value, 1e7)),
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        random_state=self._rng
        ^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/cobaya/model.py", line 616, in get_valid_point
    results = self.logposterior(initial_point)
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/cobaya/model.py", line 558, in logposterior
    like = self._loglikes_input_params(input_params,
                                       return_derived=return_derived,
                                       cached=cached, make_finite=make_finite)
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/cobaya/model.py", line 378, in _loglikes_input_params
    compute_success = component.check_cache_and_compute(
        params, want_derived=need_derived,
        dependency_params=depend_list, cached=cached)
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/cobaya/theory.py", line 253, in check_cache_and_compute
    if self.calculate(state, want_derived, **params_values_dict) is False:
       ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/mflike/foreground.py", line 432, in calculate
    state["fg_totals"] = self.get_foreground_model_totals(**params_values_dict)
                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/mflike/foreground.py", line 443, in get_foreground_model_totals
    model = self._get_foreground_model_arrays(params_values_dict)
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/mflike/foreground.py", line 556, in _get_foreground_model_arrays
    return super()._get_foreground_model_arrays(fg_params, ell=ell)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/mflike/foreground.py", line 270, in _get_foreground_model_arrays
    model["tt", "kSZ"] = fg_params["a_kSZ"] * self.ksz(
                                              ~~~~~~~~^
        {"nu": self.bandint_freqs_T}, {"ell": ell, "ell_0": ell_0}
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/fgspectra/model.py", line 111, in __call__
    return self.eval(*args, **kwargs)
           ~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/fgspectra/cross.py", line 136, in eval
    f_nu = self._sed(**sed_kwargs)
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/fgspectra/model.py", line 111, in __call__
    return self.eval(*args, **kwargs)
           ~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/fgspectra/frequency.py", line 324, in eval
    return _bandpass_integration()
  File "/home/c.c24054153/.conda/envs/boltzmannbenchmarks/lib/python3.13/site-packages/fgspectra/frequency.py", line 84, in _bandpass_integration
    del kw["self"]  # self was in the locals but is not a keyword argument
        ~~^^^^^^^^
TypeError: cannot remove variables from FrameLocalsProxy

I think this is caused by different versions of fgspectra

[xgarrido]

I haven't be able to reproduce your error on a fresh install of mflike (see steps below). We need fgspectra version to be at least 1.3.0 so if you have an older version, I think when installing mflike, the system should upgrade fgspectra. In any case, you can try to upgrade it by doing python -m pip install -U fgspectra.

Here are the steps I did using a virtual env.

cd /tmp
python -m venv pyenv
source pyenv/bin/activate
python -m pip install mflike
wget https://raw.githubusercontent.com/simonsobs/LAT_MFLike/refs/heads/master/examples/mflike_example.yaml
# Source again to make sure we use the correct cobaya bins
source pyenv/bin/activate
cobaya-install -p packages mflike_example.yaml
cobaya-run -p packages mflike_example.yaml

[xgarrido]

@pengenix Do you still have the issue ? Otherwise can you close this issue ?