library incompatibility

[gingerpowter]

we are trying to run a multi-objective optimization script, but ran into a library compatibility issues between the optimas.explorations and xopt.generators for MOBO generator
@RemiLehe
here is how we are trying to use the VOCS, Generator, and Evaluator

vocs = VOCS(
    variables={
        "voltage":  [50, 300],
        "pressure": [25, 100],
    },
    objectives={
        "objective1": "MINIMIZE",
        "objective2": "MINIMIZE",
    },)

Here 
# Create generator.
gen = MOBOGenerator(
    vocs=vocs,
    reference_point={
        "objective1": 1.0,
        "objective2": 0.5,
    }
)

# Create exploration.
exploration = Exploration(
    generator=gen,
    evaluator=ev,
    max_evals=n_total,
    sim_workers=sim_workers,
    run_async=True,
    resume=False,  # ← change this

)

Error down below:

Traceback (most recent call last):
  File "/pscratch/.../BOI_test_4_8_2026/ammto_chipfab/optimization/run_grid_scan.py", line 107, in <module>
    exploration = Exploration(
                  ^^^^^^^^^^^^

  File "/pscratch/.../storage/sw/warpx_opt_new/perlmutter/gpu/venvs/warpx-optnew-gpu/lib/python3.11/site-packages/optimas/explorations/base.py", line 124, in __init__
    self._set_default_libe_specs()

  File "/pscratch/.../storage/sw/warpx_opt_new/perlmutter/gpu/venvs/warpx-optnew-gpu/lib/python3.11/site-packages/optimas/explorations/base.py", line 599, in _set_default_libe_specs
    gen_libE_specs = self.generator.get_libe_specs()
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/pscratch/.../storage/sw/warpx_opt_new/perlmutter/gpu/venvs/warpx-optnew-gpu/lib/python3.11/site-packages/pydantic/main.py", line 1026, in __getattr__
    raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}')

AttributeError: 'MOBOGenerator' object has no attribute 'get_libe_specs'

Can someone help us resolve this issue. We would like to use the MOBOGenerator from Xopt with the optimas wrapper - so that we can perform evaluations in parallel.
Please let us know if we can provide more information. We are also happy to test a branch once you have a fix. Thank you so much!

[shuds13]

Need to use the ExternalGenerator wrapper
https://github.com/optimas-org/optimas/blob/main/tests/test_xopt_generators.py