get_mkt_info cleanup

piker/brokers/deribit/feed.py

@@ -160,38 +160,26 @@ async def get_mkt_info(
         assets: dict[str, Asset] = await client.get_assets()
         pair_str: str = mkt_ep.lower()
 
-        # switch venue-mode depending on input pattern parsing
-        # since we want to use a particular endpoint (set) for
-        # pair info lookup!
-        client.mkt_mode = mkt_mode
-
         pair: Pair = await client.exch_info(
             sym=pair_str,
         )
-        dst: Asset | None = assets.get(pair.bs_dst_asset)
-        if (
-            not dst
-            # TODO: a known asset DNE list?
-            # and pair.baseAsset == 'DEFI'
-        ):
-            log.warning(
-                f'UNKNOWN {venue} asset {pair.base_currency} from,\n'
-                f'{pformat(pair.to_dict())}'
-            )
+        mkt_mode = pair.venue
+        client.mkt_mode = mkt_mode
 
-            # XXX UNKNOWN missing "asset", though no idea why?
-            # maybe it's only avail in the margin venue(s): /dapi/ ?
-            return None
+        dst: Asset | None = assets.get(pair.bs_dst_asset)
+        src: Asset | None = assets.get(pair.bs_src_asset)
 
         mkt = MktPair(
             dst=dst,
-            src=assets.get(pair.bs_src_asset),
+            src=src,
             price_tick=pair.price_tick,
             size_tick=pair.size_tick,
             bs_mktid=pair.symbol,
-            expiry=expiry,
-            venue=venue,
+            expiry=pair.expiry,
+            venue=mkt_mode,
             broker='deribit',
+            _atype=mkt_mode,
+            _fqme_without_src=True,
         )
         return mkt, pair