diff --git a/piker/accounting/_ledger.py b/piker/accounting/_ledger.py
index 82a77107..d2e56bf0 100644
--- a/piker/accounting/_ledger.py
+++ b/piker/accounting/_ledger.py
@@ -40,7 +40,7 @@ import tomli_w  # for fast ledger writing
 
 from piker.types import Struct
 from piker import config
-from ..log import get_logger
+from piker.log import get_logger
 from .calc import (
     iter_by_dt,
 )
@@ -239,7 +239,9 @@ class TransactionLedger(UserDict):
 
         symcache: SymbologyCache = self._symcache
         towrite: dict[str, Any] = {}
-        for tid, txdict in self.tx_sort(self.data.copy()):
+        for tid, txdict in self.tx_sort(
+            self.data.copy()
+        ):
             # write blank-str expiry for non-expiring assets
             if (
                 'expiry' in txdict
@@ -377,7 +379,7 @@ def open_trade_ledger(
         account,
         dirpath=_fp,
     )
-    cpy = ledger_dict.copy()
+    cpy: dict = ledger_dict.copy()
 
     # XXX NOTE: if not provided presume we are being called from
     # sync code and need to maybe run `trio` to generate..
@@ -406,7 +408,13 @@ def open_trade_ledger(
         account=account,
         mod=mod,
         symcache=symcache,
-        tx_sort=getattr(mod, 'tx_sort', tx_sort),
+
+        # NOTE: allow backends to provide custom ledger sorting
+        tx_sort=getattr(
+            mod,
+            'tx_sort',
+            tx_sort,
+        ),
     )
     try:
         yield ledger