--- a/__pkginfo__.py	Wed Nov 06 11:27:36 2019 +0100
+++ b/__pkginfo__.py	Wed Nov 06 11:22:40 2019 +0100
@@ -98,6 +98,5 @@
     'logilab-database >= 1.6.0',
     'yapps2 >= 2.2.0',  # XXX to ensure we don't use the broken pypi version
     'logilab-constraint >= 0.5.0',  # fallback if the gecode compiled module is missing
-    'six >= 1.4.0',
     'setuptools',
     ]

--- a/debian/changelog	Wed Nov 06 11:27:36 2019 +0100
+++ b/debian/changelog	Wed Nov 06 11:22:40 2019 +0100
@@ -1,6 +1,7 @@
 rql (0.35.2-1.1) UNRELEASED; urgency=medium
 
   * Drop python2 packaging
+  * Drop dependency on python3-six
 
  -- Philippe Pepiot <philippe.pepiot@logilab.fr>  Wed, 06 Nov 2019 11:20:39 +0100
 

--- a/debian/control	Wed Nov 06 11:27:36 2019 +0100
+++ b/debian/control	Wed Nov 06 11:22:40 2019 +0100
@@ -13,7 +13,6 @@
  libgecode-dev,
  python3-sphinx,
  python3-setuptools,
- python3-six
 X-Python3-Version: >= 3.4
 Standards-Version: 4.3.0
 Testsuite: autopkgtest-pkg-python

--- a/rql/__init__.py	Wed Nov 06 11:27:36 2019 +0100
+++ b/rql/__init__.py	Wed Nov 06 11:22:40 2019 +0100
@@ -24,7 +24,7 @@
 import threading
 
 import pkg_resources
-from six import StringIO
+from io import StringIO
 
 from rql._exceptions import *
 

--- a/rql/analyze.py	Wed Nov 06 11:27:36 2019 +0100
+++ b/rql/analyze.py	Wed Nov 06 11:22:40 2019 +0100
@@ -24,8 +24,7 @@
 
 import os
 
-from six import StringIO, string_types
-from six.moves import zip
+from io import StringIO
 
 from rql import TypeResolverException, nodes
 
@@ -91,13 +90,13 @@
         self.scons.append(expr)
 
     def var_has_type(self, var, etype):
-        assert isinstance(etype, string_types)
+        assert isinstance(etype, str)
         self.add_expr((var,), '%s == %r' % (var, etype))
 
     def var_has_types(self, var, etypes):
         etypes = tuple(etypes)
         for t in etypes:
-            assert isinstance(t, string_types)
+            assert isinstance(t, str)
         if len(etypes) == 1:
             cstr = '%s == "%s"' % (var, etypes[0])
         else:
@@ -115,7 +114,7 @@
             for vars, types in orred_expr:
                 types = tuple(types)
                 for t in types:
-                    assert isinstance(t, string_types)
+                    assert isinstance(t, str)
                 if len(types) == 1:
                     anded.add('%s == "%s"' % ('=='.join(vars), types[0]))
                 else:
@@ -245,7 +244,7 @@
 
     def var_has_types(self, var, etypes):
         for t in etypes:
-            assert isinstance(t, string_types)
+            assert isinstance(t, str)
         if len(etypes) == 1:
             self.and_eq(var, tuple(etypes)[0])
         else:
@@ -271,7 +270,7 @@
             for vars, types in orred_expr:
                 self.equal_vars(vars)
                 for t in types:
-                    assert isinstance(t, string_types)
+                    assert isinstance(t, str)
                 for var in vars:
                     if len(types) == 1:
                         anded.append([_EQ, self.variables[var], self.values[types[0]]])

--- a/rql/compare.py	Wed Nov 06 11:27:36 2019 +0100
+++ b/rql/compare.py	Wed Nov 06 11:22:40 2019 +0100
@@ -23,8 +23,6 @@
 __docformat__ = "restructuredtext en"
 
 
-from six.moves import range
-
 from rql.nodes import VariableRef, Variable, Function, Relation, Comparison
 
 

--- a/rql/nodes.py	Wed Nov 06 11:27:36 2019 +0100
+++ b/rql/nodes.py	Wed Nov 06 11:22:40 2019 +0100
@@ -27,8 +27,6 @@
 from decimal import Decimal
 from datetime import datetime, date, time, timedelta
 
-from six import string_types
-
 from rql import CoercionError, RQLException
 from rql.base import BaseNode, Node, BinaryNode, LeafNode
 from rql.utils import (function_description, uquote, common_parent,
@@ -230,7 +228,7 @@
                     etypes = (istarget.value,)
                 else:  # Function (IN)
                     etypes = [et.value for et in istarget.children]
-                if isinstance(etype, string_types):
+                if isinstance(etype, str):
                     restr_etypes = {etype}
                 else:
                     restr_etypes = set(etype)
@@ -767,13 +765,13 @@
             #     and linked relation
             if kwargs is not None:
                 value = kwargs.get(self.value, '???')
-                if isinstance(value, string_types):
+                if isinstance(value, str):
                     value = uquote(value)
                 else:
                     value = repr(value)
                 return value
             return '%%(%s)s' % self.value
-        if isinstance(self.value, string_types):
+        if isinstance(self.value, str):
             return uquote(self.value)
         return repr(self.value)
 

--- a/rql/rqlgen.py	Wed Nov 06 11:27:36 2019 +0100
+++ b/rql/rqlgen.py	Wed Nov 06 11:22:40 2019 +0100
@@ -20,8 +20,6 @@
 """
 __docformat__ = "restructuredtext en"
 
-from six.moves import range
-
 NOT = 1
 
 

--- a/rql/stmts.py	Wed Nov 06 11:27:36 2019 +0100
+++ b/rql/stmts.py	Wed Nov 06 11:22:40 2019 +0100
@@ -28,9 +28,6 @@
 from copy import deepcopy
 from warnings import warn
 
-from six import integer_types
-from six.moves import range
-
 from logilab.common.deprecation import deprecated
 
 from rql import BadRQLQuery, CoercionError, nodes
@@ -579,7 +576,7 @@
         self.distinct = value
 
     def set_limit(self, limit):
-        if limit is not None and (not isinstance(limit, integer_types) or limit <= 0):
+        if limit is not None and (not isinstance(limit, int) or limit <= 0):
             raise BadRQLQuery('bad limit %s' % limit)
         if self.should_register_op and limit != self.limit:
             from rql.undo import SetLimitOperation
@@ -587,7 +584,7 @@
         self.limit = limit
 
     def set_offset(self, offset):
-        if offset is not None and (not isinstance(offset, integer_types) or offset < 0):
+        if offset is not None and (not isinstance(offset, int) or offset < 0):
             raise BadRQLQuery('bad offset %s' % offset)
         if self.should_register_op and offset != self.offset:
             from rql.undo import SetOffsetOperation

--- a/test/unittest_parser.py	Wed Nov 06 11:27:36 2019 +0100
+++ b/test/unittest_parser.py	Wed Nov 06 11:22:40 2019 +0100
@@ -18,7 +18,7 @@
 # with rql. If not, see <http://www.gnu.org/licenses/>.
 from __future__ import print_function
 
-from six import text_type, PY2
+import unittest
 
 from yapps.runtime import print_error, SyntaxError
 
@@ -26,11 +26,6 @@
 from rql import BadRQLQuery, RQLSyntaxError, nodes
 from rql import parse
 
-if PY2:
-    import unittest2 as unittest
-else:
-    import unittest
-
 
 BAD_SYNTAX_QUERIES = (
     'ANY X WHERE X name Nulll;',
@@ -212,7 +207,7 @@
         comparison = base.children[1]
         self.assertIsInstance(comparison, nodes.Comparison)
         rhs = comparison.children[0]
-        self.assertIsInstance(rhs.value, text_type)
+        self.assertIsInstance(rhs.value, str)
 
     def test_precedence_1(self):
         tree = self.parse("Any X WHERE X firstname 'lulu' AND X name 'toto' OR X name 'tutu';")

--- a/test/unittest_stcheck.py	Wed Nov 06 11:27:36 2019 +0100
+++ b/test/unittest_stcheck.py	Wed Nov 06 11:22:40 2019 +0100
@@ -17,15 +17,12 @@
 # with rql. If not, see <http://www.gnu.org/licenses/>.
 
 from __future__ import print_function
-import six
+
+import unittest
 
 from rql import RQLHelper, BadRQLQuery, stmts, nodes
 from unittest_analyze import DummySchema
 
-if six.PY2:
-    import unittest2 as unittest
-else:
-    import unittest
 
 BAD_QUERIES = (
     'Any X, Y GROUPBY X',

--- a/test/unittest_utils.py	Wed Nov 06 11:27:36 2019 +0100
+++ b/test/unittest_utils.py	Wed Nov 06 11:22:40 2019 +0100
@@ -16,8 +16,6 @@
 # You should have received a copy of the GNU Lesser General Public License along
 # with rql. If not, see <http://www.gnu.org/licenses/>.
 
-from six.moves import range
-
 from logilab.common.testlib import TestCase, unittest_main
 
 from rql import utils, nodes, parse