diff --git a/poky/bitbake/lib/bb/build.py b/poky/bitbake/lib/bb/build.py
index b8c1099..db706d0 100644
--- a/poky/bitbake/lib/bb/build.py
+++ b/poky/bitbake/lib/bb/build.py
@@ -572,7 +572,6 @@
     localdata.setVar('BB_FILENAME', fn)
     localdata.setVar('OVERRIDES', 'task-%s:%s' %
                      (task[3:].replace('_', '-'), d.getVar('OVERRIDES', False)))
-    localdata.finalize()
     bb.data.expandKeys(localdata)
     return localdata
 
diff --git a/poky/bitbake/lib/bb/data.py b/poky/bitbake/lib/bb/data.py
index 53fe348..3a6af32 100644
--- a/poky/bitbake/lib/bb/data.py
+++ b/poky/bitbake/lib/bb/data.py
@@ -4,14 +4,16 @@
 Functions for interacting with the data structure used by the
 BitBake build tools.
 
-The expandKeys and update_data are the most expensive
-operations. At night the cookie monster came by and
+expandKeys and datastore iteration are the most expensive
+operations. Updating overrides is now "on the fly" but still based
+on the idea of the cookie monster introduced by zecke:
+"At night the cookie monster came by and
 suggested 'give me cookies on setting the variables and
 things will work out'. Taking this suggestion into account
 applying the skills from the not yet passed 'Entwurf und
 Analyse von Algorithmen' lecture and the cookie
 monster seems to be right. We will track setVar more carefully
-to have faster update_data and expandKeys operations.
+to have faster datastore operations."
 
 This is a trade-off between speed and memory again but
 the speed is more critical here.
@@ -70,10 +72,6 @@
     """Return a list of keys in d"""
     return d.keys()
 
-
-__expand_var_regexp__ = re.compile(r"\${[^{}]+}")
-__expand_python_regexp__ = re.compile(r"\${@.+?}")
-
 def expand(s, d, varname = None):
     """Variable expansion using the data store"""
     return d.expand(s, varname)
@@ -268,10 +266,6 @@
                newdeps |= set((d.getVarFlag(dep, "vardeps") or "").split())
         newdeps -= seen
 
-def update_data(d):
-    """Performs final steps upon the datastore, including application of overrides"""
-    d.finalize(parent = True)
-
 def build_dependencies(key, keys, shelldeps, varflagsexcl, ignored_vars, d):
     deps = set()
     try:
diff --git a/poky/bitbake/lib/bb/data_smart.py b/poky/bitbake/lib/bb/data_smart.py
index dd20ca5..5415f2f 100644
--- a/poky/bitbake/lib/bb/data_smart.py
+++ b/poky/bitbake/lib/bb/data_smart.py
@@ -29,7 +29,7 @@
 __setvar_keyword__ = [":append", ":prepend", ":remove"]
 __setvar_regexp__ = re.compile(r'(?P<base>.*?)(?P<keyword>:append|:prepend|:remove)(:(?P<add>[^A-Z]*))?$')
 __expand_var_regexp__ = re.compile(r"\${[a-zA-Z0-9\-_+./~:]+?}")
-__expand_python_regexp__ = re.compile(r"\${@.+?}")
+__expand_python_regexp__ = re.compile(r"\${@(?:{.*?}|.)+?}")
 __whitespace_split__ = re.compile(r'(\s)')
 __override_regexp__ = re.compile(r'[a-z0-9]+')
 
@@ -119,6 +119,11 @@
             else:
                 code = match.group()[3:-1]
 
+            # Do not run code that contains one or more unexpanded variables
+            # instead return the code with the characters we removed put back
+            if __expand_var_regexp__.findall(code):
+                return "${@" + code + "}"
+
             if self.varname:
                 varname = 'Var <%s>' % self.varname
             else:
@@ -476,13 +481,6 @@
     def expand(self, s, varname = None):
         return self.expandWithRefs(s, varname).value
 
-    def finalize(self, parent = False):
-        return
-
-    def internal_finalize(self, parent = False):
-        """Performs final steps upon the datastore, including application of overrides"""
-        self.overrides = None
-
     def need_overrides(self):
         if self.overrides is not None:
             return
@@ -633,7 +631,7 @@
                 nextnew.update(vardata.references)
                 nextnew.update(vardata.contains.keys())
             new = nextnew
-        self.internal_finalize(True)
+        self.overrides = None
 
     def _setvar_update_overrides(self, var, **loginfo):
         # aka pay the cookie monster
diff --git a/poky/bitbake/lib/bb/fetch2/gitsm.py b/poky/bitbake/lib/bb/fetch2/gitsm.py
index 25d5db0..fee40cd 100644
--- a/poky/bitbake/lib/bb/fetch2/gitsm.py
+++ b/poky/bitbake/lib/bb/fetch2/gitsm.py
@@ -115,13 +115,14 @@
                     # This has to be a file reference
                     proto = "file"
                     url = "gitsm://" + uris[module]
-            if "{}{}".format(ud.host, ud.path) in url:
+            if url.endswith("{}{}".format(ud.host, ud.path)):
                 raise bb.fetch2.FetchError("Submodule refers to the parent repository. This will cause deadlock situation in current version of Bitbake." \
                                            "Consider using git fetcher instead.")
 
             url += ';protocol=%s' % proto
             url += ";name=%s" % module
             url += ";subpath=%s" % module
+            url += ";nobranch=1"
 
             ld = d.createCopy()
             # Not necessary to set SRC_URI, since we're passing the URI to
diff --git a/poky/bitbake/lib/bb/tests/data.py b/poky/bitbake/lib/bb/tests/data.py
index e667c7c..8c043b7 100644
--- a/poky/bitbake/lib/bb/tests/data.py
+++ b/poky/bitbake/lib/bb/tests/data.py
@@ -60,6 +60,15 @@
         val = self.d.expand("${@5*12}")
         self.assertEqual(str(val), "60")
 
+    def test_python_snippet_w_dict(self):
+        val = self.d.expand("${@{ 'green': 1, 'blue': 2 }['green']}")
+        self.assertEqual(str(val), "1")
+
+    def test_python_unexpanded_multi(self):
+        self.d.setVar("bar", "${unsetvar}")
+        val = self.d.expand("${@2*2},${foo},${@d.getVar('foo') + ' ${bar}'},${foo}")
+        self.assertEqual(str(val), "4,value_of_foo,${@d.getVar('foo') + ' ${unsetvar}'},value_of_foo")
+
     def test_expand_in_python_snippet(self):
         val = self.d.expand("${@'boo ' + '${foo}'}")
         self.assertEqual(str(val), "boo value_of_foo")
diff --git a/poky/bitbake/lib/toaster/orm/fixtures/README b/poky/bitbake/lib/toaster/orm/fixtures/README
index 1b1c660..7cd745e 100644
--- a/poky/bitbake/lib/toaster/orm/fixtures/README
+++ b/poky/bitbake/lib/toaster/orm/fixtures/README
@@ -27,4 +27,4 @@
 
 Use the django management command manage.py loaddata <your fixture file>
 For further information see the Django command documentation at:
-https://docs.djangoproject.com/en/1.8/ref/django-admin/#django-admin-loaddata
+https://docs.djangoproject.com/en/3.2/ref/django-admin/#django-admin-loaddata
diff --git a/poky/bitbake/lib/toaster/orm/fixtures/gen_fixtures.py b/poky/bitbake/lib/toaster/orm/fixtures/gen_fixtures.py
index 0d5f453..ad20d6b 100755
--- a/poky/bitbake/lib/toaster/orm/fixtures/gen_fixtures.py
+++ b/poky/bitbake/lib/toaster/orm/fixtures/gen_fixtures.py
@@ -35,17 +35,26 @@
 # [Codename, Yocto Project Version, Release Date, Current Version, Support Level, Poky Version, BitBake branch]
 current_releases = [
     # Release slot #1
-    ['Kirkstone','3.5','April 2022','','Future - Long Term Support (until Apr. 2024)','27.0','1.54'],
-#    ['Dunfell','3.1','April 2021','3.1.5 (March 2022)','Stable - Support for 13 months (until Apr. 2022)','23.0','1.46'],
+    ['Kirkstone','4.0','April 2022','4.0.5 (October 2022)','Stable - Long Term Support (until Apr. 2024)','','2.0'],
     # Release slot #2 'local'
     ['HEAD','HEAD','','Local Yocto Project','HEAD','','HEAD'],
     # Release slot #3 'master'
     ['Master','master','','Yocto Project master','master','','master'],
     # Release slot #4
-    ['Honister','3.4','October 2021','3.4.2 (February 2022)','Support for 7 months (until May 2022)','26.0','1.52'],
-#    ['Gatesgarth','3.2','Oct 2020','3.2.4 (May 2021)','EOL','24.0','1.48'],
+    ['Langdale','4.1','October 2022','4.1.1 (November 2022)','Support for 7 months (until May 2023)','','2.2'],
+#   ['Honister','3.4','October 2021','3.4.2 (February 2022)','Support for 7 months (until May 2022)','26.0','1.52'],
+#   ['Gatesgarth','3.2','Oct 2020','3.2.4 (May 2021)','EOL','24.0','1.48'],
     # Optional Release slot #4
-    ['Hardknott','3.3','April 2021','3.3.5 (March 2022)','Stable - Support for 13 months (until Apr. 2022)','25.0','1.50'],
+    # 'dunfell' seems to have a bug:
+    # Bitbake crash
+    # Traceback (most recent call last):
+    # File "/home/usersetup/poky/bitbake/lib/bb/ui/toasterui.py", line 337, in main
+    #   buildinfohelper.update_and_store_task(event)
+    #   File "/home/usersetup/poky/bitbake/lib/bb/ui/buildinfohelper.py", line 1267, in update_and_store_task
+    #   assert identifier in self.internal_state['taskdata']
+    #   AssertionError
+#   ['Dunfell','3.1','April 2021','3.1.20 (October 2022)','Stable - Long Term Support (until Apr. 2024)','23.0','1.46'],
+#   ['Hardknott','3.3','April 2021','3.3.5 (March 2022)','Stable - Support for 13 months (until Apr. 2022)','25.0','1.50'],
 ]
 
 default_poky_layers = [
diff --git a/poky/bitbake/lib/toaster/orm/fixtures/oe-core.xml b/poky/bitbake/lib/toaster/orm/fixtures/oe-core.xml
index 450e7a2..b83b94d 100644
--- a/poky/bitbake/lib/toaster/orm/fixtures/oe-core.xml
+++ b/poky/bitbake/lib/toaster/orm/fixtures/oe-core.xml
@@ -10,7 +10,7 @@
   <object model="orm.bitbakeversion" pk="1">
     <field type="CharField" name="name">kirkstone</field>
     <field type="CharField" name="giturl">git://git.openembedded.org/bitbake</field>
-    <field type="CharField" name="branch">1.54</field>
+    <field type="CharField" name="branch">2.0</field>
   </object>
   <object model="orm.bitbakeversion" pk="2">
     <field type="CharField" name="name">HEAD</field>
@@ -23,14 +23,9 @@
     <field type="CharField" name="branch">master</field>
   </object>
   <object model="orm.bitbakeversion" pk="4">
-    <field type="CharField" name="name">honister</field>
+    <field type="CharField" name="name">langdale</field>
     <field type="CharField" name="giturl">git://git.openembedded.org/bitbake</field>
-    <field type="CharField" name="branch">1.52</field>
-  </object>
-  <object model="orm.bitbakeversion" pk="5">
-    <field type="CharField" name="name">hardknott</field>
-    <field type="CharField" name="giturl">git://git.openembedded.org/bitbake</field>
-    <field type="CharField" name="branch">1.50</field>
+    <field type="CharField" name="branch">2.2</field>
   </object>
 
   <!-- Releases available -->
@@ -56,18 +51,11 @@
     <field type="TextField" name="helptext">Toaster will run your builds using the tip of the &lt;a href=\"https://cgit.openembedded.org/openembedded-core/log/\"&gt;OpenEmbedded master&lt;/a&gt; branch.</field>
   </object>
   <object model="orm.release" pk="4">
-    <field type="CharField" name="name">honister</field>
-    <field type="CharField" name="description">Openembedded Honister</field>
+    <field type="CharField" name="name">langdale</field>
+    <field type="CharField" name="description">Openembedded Langdale</field>
     <field rel="ManyToOneRel" to="orm.bitbakeversion" name="bitbake_version">4</field>
-    <field type="CharField" name="branch_name">honister</field>
-    <field type="TextField" name="helptext">Toaster will run your builds using the tip of the &lt;a href=\"https://cgit.openembedded.org/openembedded-core/log/?h=honister\"&gt;OpenEmbedded Honister&lt;/a&gt; branch.</field>
-  </object>
-  <object model="orm.release" pk="5">
-    <field type="CharField" name="name">hardknott</field>
-    <field type="CharField" name="description">Openembedded Hardknott</field>
-    <field rel="ManyToOneRel" to="orm.bitbakeversion" name="bitbake_version">5</field>
-    <field type="CharField" name="branch_name">hardknott</field>
-    <field type="TextField" name="helptext">Toaster will run your builds using the tip of the &lt;a href=\"https://cgit.openembedded.org/openembedded-core/log/?h=hardknott\"&gt;OpenEmbedded Hardknott&lt;/a&gt; branch.</field>
+    <field type="CharField" name="branch_name">langdale</field>
+    <field type="TextField" name="helptext">Toaster will run your builds using the tip of the &lt;a href=\"https://cgit.openembedded.org/openembedded-core/log/?h=langdale\"&gt;OpenEmbedded Langdale&lt;/a&gt; branch.</field>
   </object>
 
   <!-- Default layers for each release -->
@@ -87,10 +75,6 @@
     <field rel="ManyToOneRel" to="orm.release" name="release">4</field>
     <field type="CharField" name="layer_name">openembedded-core</field>
   </object>
-  <object model="orm.releasedefaultlayer" pk="5">
-    <field rel="ManyToOneRel" to="orm.release" name="release">5</field>
-    <field type="CharField" name="layer_name">openembedded-core</field>
-  </object>
 
 
   <!-- Layer for the Local release -->
diff --git a/poky/bitbake/lib/toaster/orm/fixtures/poky.xml b/poky/bitbake/lib/toaster/orm/fixtures/poky.xml
index 20fcc01..6d58a4f 100644
--- a/poky/bitbake/lib/toaster/orm/fixtures/poky.xml
+++ b/poky/bitbake/lib/toaster/orm/fixtures/poky.xml
@@ -26,15 +26,9 @@
     <field type="CharField" name="dirpath">bitbake</field>
   </object>
   <object model="orm.bitbakeversion" pk="4">
-    <field type="CharField" name="name">honister</field>
+    <field type="CharField" name="name">langdale</field>
     <field type="CharField" name="giturl">git://git.yoctoproject.org/poky</field>
-    <field type="CharField" name="branch">honister</field>
-    <field type="CharField" name="dirpath">bitbake</field>
-  </object>
-  <object model="orm.bitbakeversion" pk="5">
-    <field type="CharField" name="name">hardknott</field>
-    <field type="CharField" name="giturl">git://git.yoctoproject.org/poky</field>
-    <field type="CharField" name="branch">hardknott</field>
+    <field type="CharField" name="branch">langdale</field>
     <field type="CharField" name="dirpath">bitbake</field>
   </object>
 
@@ -62,18 +56,11 @@
     <field type="TextField" name="helptext">Toaster will run your builds using the tip of the &lt;a href="https://git.yoctoproject.org/cgit/cgit.cgi/poky/log/"&gt;Yocto Project Master branch&lt;/a&gt;.</field>
   </object>
   <object model="orm.release" pk="4">
-    <field type="CharField" name="name">honister</field>
-    <field type="CharField" name="description">Yocto Project 3.4 "Honister"</field>
+    <field type="CharField" name="name">langdale</field>
+    <field type="CharField" name="description">Yocto Project 4.1 "Langdale"</field>
     <field rel="ManyToOneRel" to="orm.bitbakeversion" name="bitbake_version">4</field>
-    <field type="CharField" name="branch_name">honister</field>
-    <field type="TextField" name="helptext">Toaster will run your builds using the tip of the &lt;a href="https://git.yoctoproject.org/cgit/cgit.cgi/poky/log/?h=honister"&gt;Yocto Project Honister branch&lt;/a&gt;.</field>
-  </object>
-  <object model="orm.release" pk="5">
-    <field type="CharField" name="name">hardknott</field>
-    <field type="CharField" name="description">Yocto Project 3.3 "Hardknott"</field>
-    <field rel="ManyToOneRel" to="orm.bitbakeversion" name="bitbake_version">5</field>
-    <field type="CharField" name="branch_name">hardknott</field>
-    <field type="TextField" name="helptext">Toaster will run your builds using the tip of the &lt;a href="https://git.yoctoproject.org/cgit/cgit.cgi/poky/log/?h=hardknott"&gt;Yocto Project Hardknott branch&lt;/a&gt;.</field>
+    <field type="CharField" name="branch_name">langdale</field>
+    <field type="TextField" name="helptext">Toaster will run your builds using the tip of the &lt;a href="https://git.yoctoproject.org/cgit/cgit.cgi/poky/log/?h=langdale"&gt;Yocto Project Langdale branch&lt;/a&gt;.</field>
   </object>
 
   <!-- Default project layers for each release -->
@@ -125,18 +112,6 @@
     <field rel="ManyToOneRel" to="orm.release" name="release">4</field>
     <field type="CharField" name="layer_name">meta-yocto-bsp</field>
   </object>
-  <object model="orm.releasedefaultlayer" pk="13">
-    <field rel="ManyToOneRel" to="orm.release" name="release">5</field>
-    <field type="CharField" name="layer_name">openembedded-core</field>
-  </object>
-  <object model="orm.releasedefaultlayer" pk="14">
-    <field rel="ManyToOneRel" to="orm.release" name="release">5</field>
-    <field type="CharField" name="layer_name">meta-poky</field>
-  </object>
-  <object model="orm.releasedefaultlayer" pk="15">
-    <field rel="ManyToOneRel" to="orm.release" name="release">5</field>
-    <field type="CharField" name="layer_name">meta-yocto-bsp</field>
-  </object>
 
   <!-- Default layers provided by poky
        openembedded-core
@@ -177,14 +152,7 @@
     <field rel="ManyToOneRel" to="orm.layer" name="layer">1</field>
     <field type="IntegerField" name="layer_source">0</field>
     <field rel="ManyToOneRel" to="orm.release" name="release">4</field>
-    <field type="CharField" name="branch">honister</field>
-    <field type="CharField" name="dirpath">meta</field>
-  </object>
-  <object model="orm.layer_version" pk="5">
-    <field rel="ManyToOneRel" to="orm.layer" name="layer">1</field>
-    <field type="IntegerField" name="layer_source">0</field>
-    <field rel="ManyToOneRel" to="orm.release" name="release">5</field>
-    <field type="CharField" name="branch">hardknott</field>
+    <field type="CharField" name="branch">langdale</field>
     <field type="CharField" name="dirpath">meta</field>
   </object>
 
@@ -196,14 +164,14 @@
     <field type="CharField" name="vcs_web_tree_base_url">https://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/%path%?h=%branch%</field>
     <field type="CharField" name="vcs_web_file_base_url">https://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/%path%?h=%branch%</field>
   </object>
-  <object model="orm.layer_version" pk="6">
+  <object model="orm.layer_version" pk="5">
     <field rel="ManyToOneRel" to="orm.layer" name="layer">2</field>
     <field type="IntegerField" name="layer_source">0</field>
     <field rel="ManyToOneRel" to="orm.release" name="release">1</field>
     <field type="CharField" name="branch">kirkstone</field>
     <field type="CharField" name="dirpath">meta-poky</field>
   </object>
-  <object model="orm.layer_version" pk="7">
+  <object model="orm.layer_version" pk="6">
     <field rel="ManyToOneRel" to="orm.layer" name="layer">2</field>
     <field type="IntegerField" name="layer_source">0</field>
     <field rel="ManyToOneRel" to="orm.release" name="release">2</field>
@@ -211,25 +179,18 @@
     <field type="CharField" name="commit">HEAD</field>
     <field type="CharField" name="dirpath">meta-poky</field>
   </object>
-  <object model="orm.layer_version" pk="8">
+  <object model="orm.layer_version" pk="7">
     <field rel="ManyToOneRel" to="orm.layer" name="layer">2</field>
     <field type="IntegerField" name="layer_source">0</field>
     <field rel="ManyToOneRel" to="orm.release" name="release">3</field>
     <field type="CharField" name="branch">master</field>
     <field type="CharField" name="dirpath">meta-poky</field>
   </object>
-  <object model="orm.layer_version" pk="9">
+  <object model="orm.layer_version" pk="8">
     <field rel="ManyToOneRel" to="orm.layer" name="layer">2</field>
     <field type="IntegerField" name="layer_source">0</field>
     <field rel="ManyToOneRel" to="orm.release" name="release">4</field>
-    <field type="CharField" name="branch">honister</field>
-    <field type="CharField" name="dirpath">meta-poky</field>
-  </object>
-  <object model="orm.layer_version" pk="10">
-    <field rel="ManyToOneRel" to="orm.layer" name="layer">2</field>
-    <field type="IntegerField" name="layer_source">0</field>
-    <field rel="ManyToOneRel" to="orm.release" name="release">5</field>
-    <field type="CharField" name="branch">hardknott</field>
+    <field type="CharField" name="branch">langdale</field>
     <field type="CharField" name="dirpath">meta-poky</field>
   </object>
 
@@ -241,14 +202,14 @@
     <field type="CharField" name="vcs_web_tree_base_url">https://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/%path%?h=%branch%</field>
     <field type="CharField" name="vcs_web_file_base_url">https://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/%path%?h=%branch%</field>
   </object>
-  <object model="orm.layer_version" pk="11">
+  <object model="orm.layer_version" pk="9">
     <field rel="ManyToOneRel" to="orm.layer" name="layer">3</field>
     <field type="IntegerField" name="layer_source">0</field>
     <field rel="ManyToOneRel" to="orm.release" name="release">1</field>
     <field type="CharField" name="branch">kirkstone</field>
     <field type="CharField" name="dirpath">meta-yocto-bsp</field>
   </object>
-  <object model="orm.layer_version" pk="12">
+  <object model="orm.layer_version" pk="10">
     <field rel="ManyToOneRel" to="orm.layer" name="layer">3</field>
     <field type="IntegerField" name="layer_source">0</field>
     <field rel="ManyToOneRel" to="orm.release" name="release">2</field>
@@ -256,25 +217,18 @@
     <field type="CharField" name="commit">HEAD</field>
     <field type="CharField" name="dirpath">meta-yocto-bsp</field>
   </object>
-  <object model="orm.layer_version" pk="13">
+  <object model="orm.layer_version" pk="11">
     <field rel="ManyToOneRel" to="orm.layer" name="layer">3</field>
     <field type="IntegerField" name="layer_source">0</field>
     <field rel="ManyToOneRel" to="orm.release" name="release">3</field>
     <field type="CharField" name="branch">master</field>
     <field type="CharField" name="dirpath">meta-yocto-bsp</field>
   </object>
-  <object model="orm.layer_version" pk="14">
+  <object model="orm.layer_version" pk="12">
     <field rel="ManyToOneRel" to="orm.layer" name="layer">3</field>
     <field type="IntegerField" name="layer_source">0</field>
     <field rel="ManyToOneRel" to="orm.release" name="release">4</field>
-    <field type="CharField" name="branch">honister</field>
-    <field type="CharField" name="dirpath">meta-yocto-bsp</field>
-  </object>
-  <object model="orm.layer_version" pk="15">
-    <field rel="ManyToOneRel" to="orm.layer" name="layer">3</field>
-    <field type="IntegerField" name="layer_source">0</field>
-    <field rel="ManyToOneRel" to="orm.release" name="release">5</field>
-    <field type="CharField" name="branch">hardknott</field>
+    <field type="CharField" name="branch">langdale</field>
     <field type="CharField" name="dirpath">meta-yocto-bsp</field>
   </object>
 </django-objects>