Remove toolz dependency

setup.py

@@ -63,7 +63,6 @@ setup(
     install_requires=[
         'six',
         'SQLAlchemy>=0.9.3',
-        'toolz>=0.4.1',
         'total_ordering>=0.1'
         if sys.version_info[0] == 2 and sys.version_info[1] < 7 else ''
     ],

sqlalchemy_utils/batch.py

@@ -16,7 +16,6 @@ from sqlalchemy_utils.functions.orm import (
     local_values,
     local_column_names,
     local_remote_expr,
-    mapfirst,
     remote_column_names,
     remote_values,
     remote
@@ -295,7 +294,7 @@ class Fetcher(object):
         if len(names) == 1:
             attr = getattr(remote(self.prop), names[0])
             return attr.in_(
-                mapfirst(list_local_values(self.prop, self.path.entities))
+                v[0] for v in list_local_values(self.prop, self.path.entities)
             )
         elif len(names) > 1:
             return sa.or_(

sqlalchemy_utils/functions/orm.py

@@ -1,6 +1,6 @@
 from functools import partial
 from operator import attrgetter
-from toolz import curry, first
+from toolz import first
 import six
 import sqlalchemy as sa
 from sqlalchemy import inspect
@@ -41,24 +41,18 @@ def getattrs(obj, attrs):
     return map(partial(getattr, obj), attrs)
 
 
-def mapfirst(iterable):
-    return map(first, iterable)
-
-
-@curry
 def local_values(prop, entity):
     return tuple(getattrs(entity, local_column_names(prop)))
 
 
 def list_local_values(prop, entities):
-    return map(local_values(prop), entities)
+    return map(partial(local_values, prop), entities)
 
 
 def remote_values(prop, entity):
     return tuple(getattrs(entity, remote_column_names(prop)))
 
 
-@curry
 def local_remote_expr(prop, entity):
     return sa.and_(
         *[
@@ -72,7 +66,7 @@ def local_remote_expr(prop, entity):
 
 
 def list_local_remote_exprs(prop, entities):
-    return map(local_remote_expr(prop), entities)
+    return map(partial(local_remote_expr, prop), entities)
 
 
 def remote(prop):