Move _source under data package

piker/brokers/ib.py

@@ -32,7 +32,7 @@ from ..data import (
     get_shm_token,
     subscribe_ohlc_for_increment,
 )
-from ..ui._source import from_df
+from ..data._source import from_df
 
 
 log = get_logger(__name__)

piker/data/_source.py

@@ -8,6 +8,7 @@ import numpy as np
 import pandas as pd
 
 
+# our minimum structured array layout for ohlc data
 base_ohlc_dtype = np.dtype(
     [
         ('index', int),

piker/ui/_chart.py

@@ -16,7 +16,7 @@ from ._axes import (
 from ._graphics import CrossHair, BarItems
 from ._axes import YSticky
 from ._style import _xaxis_at, _min_points_to_show, hcolor
-from ._source import Symbol
+from ..data._source import Symbol
 from .. import brokers
 from .. import data
 from ..data import (