Simplify workflow engine

review256001

sale.py

@@ -1,12 +1,12 @@
 #This file is part of Tryton.  The COPYRIGHT file at the top level of
 #this repository contains the full copyright notices and license terms.
 import copy
-from trytond.model import ModelWorkflow, ModelView, ModelSQL, fields
+from trytond.model import Model, fields
 from trytond.pyson import Eval, Not, Equal, Or, Bool
 from trytond.pool import Pool
 
 
-class Sale(ModelWorkflow, ModelSQL, ModelView):
+class Sale(Model):
     _name = 'sale.sale'
 
     price_list = fields.Many2One('product.price_list', 'Price List',
@@ -52,7 +52,7 @@ class Sale(ModelWorkflow, ModelSQL, ModelView):
 Sale()
 
 
-class SaleLine(ModelSQL, ModelView):
+class SaleLine(Model):
     _name = 'sale.line'
 
     def __init__(self):

setup.py

@@ -12,7 +12,7 @@ minor_version = int(minor_version)
 
 requires = []
 for dep in info.get('depends', []):
-    if not re.match(r'(ir|res|workflow|webdav)(\W|$)', dep):
+    if not re.match(r'(ir|res|webdav)(\W|$)', dep):
         requires.append('trytond_%s >= %s.%s, < %s.%s' %
                 (dep, major_version, minor_version, major_version,
                     minor_version + 1))