FIX: Supported

mne_kit_gui/_file_traits.py

@@ -22,7 +22,6 @@
 from mne.bem import read_bem_surfaces
 from mne.io.constants import FIFF
 from mne.io import read_info, read_fiducials, read_raw
-from mne.io._read_raw import supported
 from mne import create_info
 from mne.surface import read_surface, complete_surface_info
 from mne.coreg import (_is_mri_subject, _mri_subject_has_bem,
@@ -31,6 +30,13 @@
 from mne.viz._3d import _fiducial_coords
 from mne.channels import read_dig_fif
 
+try:
+    from mne.io._read_raw import _get_supported
+except ImportError:  # MNE < 1.6
+    def _get_supported():
+        from mne.io._read_raw import supported
+        return supported
+
 
 fid_wildcard = "*.fif"
 trans_wildcard = "*.fif"
@@ -262,6 +268,7 @@ class DigSource(HasPrivateTraits):
         Nasion, RAP, LAP. If no file is set all values are 0.
     """
 
+    supported = _get_supported()
     file = FileOrDir(exists=True,
                      filter=[' '.join([f'*{ext}' for ext in supported])])