Fix some breakage

python/plugins/processing/algs/grass7/Grass7Algorithm.py

@@ -97,8 +97,7 @@ class Grass7Algorithm(GeoAlgorithm):
             self.module = None
 
     def getCopy(self):
-        newone = Grass7Algorithm(self.descriptionFile)
-        return newone
+        return self
 
     def name(self):
         return self._name

python/plugins/processing/algs/r/RAlgorithm.py

@@ -70,8 +70,7 @@ class RAlgorithm(GeoAlgorithm):
     RPLOTS = 'RPLOTS'
 
     def getCopy(self):
-        newone = RAlgorithm(self.descriptionFile)
-        return newone
+        return self
 
     def __init__(self, descriptionFile, script=None):
         GeoAlgorithm.__init__(self)

python/plugins/processing/algs/saga/SagaAlgorithm.py

@@ -78,8 +78,7 @@ class SagaAlgorithm(GeoAlgorithm):
         self._group = ''
 
     def getCopy(self):
-        newone = SagaAlgorithm(self.descriptionFile)
-        return newone
+        return self
 
     def icon(self):
         if self._icon is None:

python/plugins/processing/core/Processing.py

@@ -139,7 +139,6 @@ class Processing(object):
         for script in scripts:
             script.allowEdit = False
             script._icon = provider._icon
-            script.provider = provider
         provider.externalAlgs.extend(scripts)
         provider.refreshAlgorithms()
 

python/plugins/processing/modeler/ModelerAlgorithm.py

@@ -226,7 +226,7 @@ class ModelerAlgorithm(GeoAlgorithm):
     CANVAS_SIZE = 4000
 
     def getCopy(self):
-        newone = ModelerAlgorithm()
+        newone = self
 
         newone.algs = {}
         for algname, alg in self.algs.items():

python/plugins/processing/modeler/ModelerDialog.py

@@ -632,7 +632,6 @@ class ModelerDialog(BASE, WIDGET):
 
             if len(groups) > 0:
                 providerItem = QTreeWidgetItem()
-                provider = QgsApplication.processingRegistry().providerById(provider_id)
                 providerItem.setText(0, provider.name())
                 providerItem.setToolTip(0, provider.name())
                 providerItem.setIcon(0, provider.icon())

python/plugins/processing/preconfigured/PreconfiguredAlgorithm.py

@@ -56,7 +56,7 @@ class PreconfiguredAlgorithm(GeoAlgorithm):
         return QgsProcessingAlgorithm.FlagHideFromModeler
 
     def getCopy(self):
-        newone = PreconfiguredAlgorithm(self.descriptionFile)
+        newone = self
         newone.outputs = []
         newone._name = self._name
         newone._group = self._group

python/plugins/processing/script/ScriptAlgorithm.py

@@ -72,7 +72,7 @@ class ScriptAlgorithm(GeoAlgorithm):
             self.defineCharacteristicsFromFile()
 
     def getCopy(self):
-        newone = ScriptAlgorithm(self.descriptionFile)
+        newone = self
         return newone
 
     def icon(self):