Conda build broken

[bouweandela]

The conda build is broken because the tests fail:

Traceback (most recent call last):
  File "/opt/conda/conda-bld/esmvalcore_1615163441366/test_tmp/run_test.py", line 8, in <module>
    import esmvalcore.cmor.check
  File "/opt/conda/conda-bld/esmvalcore_1615163441366/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeho/lib/python3.9/site-packages/esmvalcore/cmor/check.py", line 12, in <module>
    from esmvalcore.preprocessor._time import _get_time_bounds
  File "/opt/conda/conda-bld/esmvalcore_1615163441366/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeho/lib/python3.9/site-packages/esmvalcore/preprocessor/__init__.py", line 11, in <module>
    from ..cmor.check import cmor_check_data, cmor_check_metadata
ImportError: cannot import name 'cmor_check_data' from partially initialized module 'esmvalcore.cmor.check' (most likely due to a circular import) (/opt/conda/conda-bld/esmvalcore_1615163441366/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeho/lib/python3.9/site-packages/esmvalcore/cmor/check.py)
Tests failed for esmvalcore-2.2.0-py_0.tar.bz2 - moving package to /opt/conda/conda-bld/broken
WARNING:conda_build.build:Tests failed for esmvalcore-2.2.0-py_0.tar.bz2 - moving package to /opt/conda/conda-bld/broken
WARNING conda_build.build:tests_failed(2955): Tests failed for esmvalcore-2.2.0-py_0.tar.bz2 - moving package to /opt/conda/conda-bld/broken
TESTS FAILED: esmvalcore-2.2.0-py_0.tar.bz2

The build started failing after #849 was merged.

[valeriupredoi]

am fixing this right now, cheers for raising @bouweandela 🍺