Cannot read dials.data set thaumatin_eiger_screen - unsupported int64

[ndevenish]

% dials.python -c "import dxtbx, sys; dxtbx.load(sys.argv[1]).get_raw_data(0)" $(dials.data get -q thaumatin_eiger_screen)/Therm_6_1.nxs
Traceback (most recent call last):
  File "<string>", line 1, in <module>
    import dxtbx, sys; dxtbx.load(sys.argv[1]).get_raw_data(0)
                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^
  File "/dls_sw/apps/dials/dials-v3-26-0/modules/dxtbx/src/dxtbx/format/FormatNXmx.py", line 164, in get_raw_data
    raw_data = dxtbx.nexus.get_raw_data(
        nxdata, nxdetector, index, bit_depth=self._bit_depth_readout
    )
  File "/dls_sw/apps/dials/dials-v3-26-0/modules/dxtbx/src/dxtbx/nexus/__init__.py", line 587, in get_raw_data
    data_as_flex = _dataset_as_flex(
        sliced_outer, tuple(module_slices), bit_depth=bit_depth
    )
  File "/dls_sw/apps/dials/dials-v3-26-0/modules/dxtbx/src/dxtbx/nexus/__init__.py", line 548, in _dataset_as_flex
    raise TypeError(f"Unsupported integer dtype {data_np.dtype}")
TypeError: Unsupported integer dtype int64

I know we saw this before dials/dials#2669 and #624, a potential previous fix in #737 - but I'm not sure we've known that actual regression data in dials.data is failing - I am surprised that the tests pass (maybe they don't try to read data).

[dagewa]

There are four times the thaumatin_eiger_screen data set is used in tests. Unfortunately 3 of them are now xfailed for various reasons, and the last one just tests printing of the header 😞

[ndevenish]

🤦

This data set should probably work.