RRS: drop support for parsing older python2-based metadata

With Python 2.x going out of support, we shouldn't have any references
to it and unfortunately that includes the ability to parse older
releases; however that's a sacrifice we'll have to make. The data
structures are still there, but we'll remove those later.

Signed-off-by: Paul Eggleton <bluelightning@bluelightning.org>

layerindex/models.py

@@ -49,13 +49,6 @@ class PythonEnvironment(models.Model):
             cmd = self.python_command
         return cmd
 
-    @staticmethod
-    def get_default_python2_environment():
-        for env in PythonEnvironment.objects.all().order_by('id'):
-            if env.name.replace(' ', '').lower().startswith(('python2', 'py2')):
-                return env
-        return None
-
     @staticmethod
     def get_default_python3_environment():
         for env in PythonEnvironment.objects.all().order_by('id'):

rrs/admin.py

@@ -22,9 +22,6 @@ class MaintenancePlanLayerBranchFormSet(BaseInlineFormSet):
     def __init__(self, *args, **kwargs):
         from layerindex.models import PythonEnvironment
         initialfields = {}
-        py2env = PythonEnvironment.get_default_python2_environment()
-        if py2env:
-            initialfields['python2_environment'] = py2env.id
         py3env = PythonEnvironment.get_default_python3_environment()
         if py3env:
             initialfields['python3_environment'] = py3env.id
@@ -36,9 +33,6 @@ class MaintenancePlanLayerBranchFormSet(BaseInlineFormSet):
     def empty_form(self):
         from layerindex.models import PythonEnvironment
         form = super(MaintenancePlanLayerBranchFormSet, self).empty_form
-        py2env = PythonEnvironment.get_default_python2_environment()
-        if py2env:
-            form.fields['python2_environment'].initial = py2env
         py3env = PythonEnvironment.get_default_python3_environment()
         if py3env:
             form.fields['python3_environment'].initial = py3env

rrs/tools/rrs_upgrade_history.py

@@ -38,17 +38,8 @@ if not fetchdir:
 def run_internal(maintplanlayerbranch, commit, commitdate, options, logger, bitbake_map, initial=False):
     from layerindex.models import PythonEnvironment
     from rrs.models import Release
-    if commitdate < maintplanlayerbranch.python3_switch_date:
-        # Python 2
-        if maintplanlayerbranch.python2_environment:
-            cmdprefix = maintplanlayerbranch.python2_environment.get_command()
-        else:
-            cmdprefix = 'python'
-        # Ensure we're using a bitbake version that is python 2 compatible
-        if commitdate > datetime(2016, 5, 10):
-            commitdate = datetime(2016, 5, 10)
-    else:
-        # Python 3
+
+    # Python 3-only these days
     if maintplanlayerbranch.python3_environment:
         cmdprefix = maintplanlayerbranch.python3_environment.get_command()
     else:
@@ -244,7 +235,7 @@ if __name__=="__main__":
     parser = optparse.OptionParser(usage = """%prog [options]""")
 
     # Starting date of the yocto project 1.6 release
-    DEFAULT_SINCE_DATE = '2013-11-11'
+    DEFAULT_SINCE_DATE = '2016-06-02'
     parser.add_option("-s", "--since",
             help="Specify initial date for importing recipe upgrades (default '%s')" % DEFAULT_SINCE_DATE,
             action="store", dest="since", default=DEFAULT_SINCE_DATE)