Added cryptofeed and pyarrow necessary for the feed, enable deribit

in the brokers init file, at this point the feed is working, to check
the tables use vd tool.

piker/brokers/__init__.py

@@ -51,6 +51,7 @@ __brokers__: list[str] = [
     'ib',
     'kraken',
     'kucoin',
+    'deribit',
 
     # broken but used to work
     # 'questrade',
@@ -61,7 +62,6 @@ __brokers__: list[str] = [
     # wstrade
     # iex
 
-    'deribit',
     # bitso
 ]
 

piker/brokers/deribit/api.py

@@ -31,9 +31,7 @@ from typing import (
     Callable,
 )
 
-from pendulum import (
+from pendulum import now
-    now,
-)
 import trio
 from trio_typing import TaskStatus
 from rapidfuzz import process as fuzzy
@@ -420,6 +418,7 @@ class Client:
         new_bars: list[tuple] = []
         for i in range(len(result.close)):
 
+            timestamp = (start_time + (i * (60 * 1000))) / 1000.0
             _open = result.open[i]
             high = result.high[i]
             low = result.low[i]
@@ -427,12 +426,12 @@ class Client:
             volume = result.volume[i]
 
             row = [
-                (start_time + (i * (60 * 1000))) / 1000.0,  # time
+                timestamp,  # time
-                result.open[i],
+                _open,
-                result.high[i],
+                high,
-                result.low[i],
+                low,
-                result.close[i],
+                close,
-                result.volume[i]
+                volume
             ]
 
             new_bars.append((i,) + tuple(row))