diff --git a/import-layers/yocto-poky/bitbake/lib/bb/tests/data.py b/import-layers/yocto-poky/bitbake/lib/bb/tests/data.py
index b54eb06..a4a9dd3 100644
--- a/import-layers/yocto-poky/bitbake/lib/bb/tests/data.py
+++ b/import-layers/yocto-poky/bitbake/lib/bb/tests/data.py
@@ -77,13 +77,13 @@
         self.assertEqual(str(val), "boo value_of_foo")
 
     def test_python_snippet_getvar(self):
-        val = self.d.expand("${@d.getVar('foo', True) + ' ${bar}'}")
+        val = self.d.expand("${@d.getVar('foo') + ' ${bar}'}")
         self.assertEqual(str(val), "value_of_foo value_of_bar")
 
     def test_python_unexpanded(self):
         self.d.setVar("bar", "${unsetvar}")
-        val = self.d.expand("${@d.getVar('foo', True) + ' ${bar}'}")
-        self.assertEqual(str(val), "${@d.getVar('foo', True) + ' ${unsetvar}'}")
+        val = self.d.expand("${@d.getVar('foo') + ' ${bar}'}")
+        self.assertEqual(str(val), "${@d.getVar('foo') + ' ${unsetvar}'}")
 
     def test_python_snippet_syntax_error(self):
         self.d.setVar("FOO", "${@foo = 5}")
@@ -99,7 +99,7 @@
         self.assertRaises(bb.data_smart.ExpansionError, self.d.getVar, "FOO", True)
 
     def test_value_containing_value(self):
-        val = self.d.expand("${@d.getVar('foo', True) + ' ${bar}'}")
+        val = self.d.expand("${@d.getVar('foo') + ' ${bar}'}")
         self.assertEqual(str(val), "value_of_foo value_of_bar")
 
     def test_reference_undefined_var(self):
@@ -109,7 +109,7 @@
     def test_double_reference(self):
         self.d.setVar("BAR", "bar value")
         self.d.setVar("FOO", "${BAR} foo ${BAR}")
-        val = self.d.getVar("FOO", True)
+        val = self.d.getVar("FOO")
         self.assertEqual(str(val), "bar value foo bar value")
 
     def test_direct_recursion(self):
@@ -129,12 +129,12 @@
 
     def test_incomplete_varexp_single_quotes(self):
         self.d.setVar("FOO", "sed -i -e 's:IP{:I${:g' $pc")
-        val = self.d.getVar("FOO", True)
+        val = self.d.getVar("FOO")
         self.assertEqual(str(val), "sed -i -e 's:IP{:I${:g' $pc")
 
     def test_nonstring(self):
         self.d.setVar("TEST", 5)
-        val = self.d.getVar("TEST", True)
+        val = self.d.getVar("TEST")
         self.assertEqual(str(val), "5")
 
     def test_rename(self):
@@ -234,19 +234,19 @@
     def test_prepend(self):
         self.d.setVar("TEST", "${VAL}")
         self.d.prependVar("TEST", "${FOO}:")
-        self.assertEqual(self.d.getVar("TEST", True), "foo:val")
+        self.assertEqual(self.d.getVar("TEST"), "foo:val")
 
     def test_append(self):
         self.d.setVar("TEST", "${VAL}")
         self.d.appendVar("TEST", ":${BAR}")
-        self.assertEqual(self.d.getVar("TEST", True), "val:bar")
+        self.assertEqual(self.d.getVar("TEST"), "val:bar")
 
     def test_multiple_append(self):
         self.d.setVar("TEST", "${VAL}")
         self.d.prependVar("TEST", "${FOO}:")
         self.d.appendVar("TEST", ":val2")
         self.d.appendVar("TEST", ":${BAR}")
-        self.assertEqual(self.d.getVar("TEST", True), "foo:val:val2:bar")
+        self.assertEqual(self.d.getVar("TEST"), "foo:val:val2:bar")
 
 class TestConcatOverride(unittest.TestCase):
     def setUp(self):
@@ -258,62 +258,66 @@
     def test_prepend(self):
         self.d.setVar("TEST", "${VAL}")
         self.d.setVar("TEST_prepend", "${FOO}:")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "foo:val")
+        self.assertEqual(self.d.getVar("TEST"), "foo:val")
 
     def test_append(self):
         self.d.setVar("TEST", "${VAL}")
         self.d.setVar("TEST_append", ":${BAR}")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "val:bar")
+        self.assertEqual(self.d.getVar("TEST"), "val:bar")
 
     def test_multiple_append(self):
         self.d.setVar("TEST", "${VAL}")
         self.d.setVar("TEST_prepend", "${FOO}:")
         self.d.setVar("TEST_append", ":val2")
         self.d.setVar("TEST_append", ":${BAR}")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "foo:val:val2:bar")
+        self.assertEqual(self.d.getVar("TEST"), "foo:val:val2:bar")
 
     def test_append_unset(self):
         self.d.setVar("TEST_prepend", "${FOO}:")
         self.d.setVar("TEST_append", ":val2")
         self.d.setVar("TEST_append", ":${BAR}")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "foo::val2:bar")
+        self.assertEqual(self.d.getVar("TEST"), "foo::val2:bar")
 
     def test_remove(self):
         self.d.setVar("TEST", "${VAL} ${BAR}")
         self.d.setVar("TEST_remove", "val")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "bar")
+        self.assertEqual(self.d.getVar("TEST"), "bar")
+
+    def test_remove_cleared(self):
+        self.d.setVar("TEST", "${VAL} ${BAR}")
+        self.d.setVar("TEST_remove", "val")
+        self.d.setVar("TEST", "${VAL} ${BAR}")
+        self.assertEqual(self.d.getVar("TEST"), "val bar")
+
+    # Ensure the value is unchanged if we have an inactive remove override
+    # (including that whitespace is preserved)
+    def test_remove_inactive_override(self):
+        self.d.setVar("TEST", "${VAL} ${BAR}    123")
+        self.d.setVar("TEST_remove_inactiveoverride", "val")
+        self.assertEqual(self.d.getVar("TEST"), "val bar    123")
 
     def test_doubleref_remove(self):
         self.d.setVar("TEST", "${VAL} ${BAR}")
         self.d.setVar("TEST_remove", "val")
         self.d.setVar("TEST_TEST", "${TEST} ${TEST}")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST_TEST", True), "bar bar")
+        self.assertEqual(self.d.getVar("TEST_TEST"), "bar bar")
 
     def test_empty_remove(self):
         self.d.setVar("TEST", "")
         self.d.setVar("TEST_remove", "val")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "")
+        self.assertEqual(self.d.getVar("TEST"), "")
 
     def test_remove_expansion(self):
         self.d.setVar("BAR", "Z")
         self.d.setVar("TEST", "${BAR}/X Y")
         self.d.setVar("TEST_remove", "${BAR}/X")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "Y")
+        self.assertEqual(self.d.getVar("TEST"), "Y")
 
     def test_remove_expansion_items(self):
         self.d.setVar("TEST", "A B C D")
         self.d.setVar("BAR", "B D")
         self.d.setVar("TEST_remove", "${BAR}")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "A C")
+        self.assertEqual(self.d.getVar("TEST"), "A C")
 
 class TestOverrides(unittest.TestCase):
     def setUp(self):
@@ -322,60 +326,53 @@
         self.d.setVar("TEST", "testvalue")
 
     def test_no_override(self):
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "testvalue")
+        self.assertEqual(self.d.getVar("TEST"), "testvalue")
 
     def test_one_override(self):
         self.d.setVar("TEST_bar", "testvalue2")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "testvalue2")
+        self.assertEqual(self.d.getVar("TEST"), "testvalue2")
 
     def test_one_override_unset(self):
         self.d.setVar("TEST2_bar", "testvalue2")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST2", True), "testvalue2")
+
+        self.assertEqual(self.d.getVar("TEST2"), "testvalue2")
         self.assertCountEqual(list(self.d.keys()), ['TEST', 'TEST2', 'OVERRIDES', 'TEST2_bar'])
 
     def test_multiple_override(self):
         self.d.setVar("TEST_bar", "testvalue2")
         self.d.setVar("TEST_local", "testvalue3")
         self.d.setVar("TEST_foo", "testvalue4")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "testvalue3")
+        self.assertEqual(self.d.getVar("TEST"), "testvalue3")
         self.assertCountEqual(list(self.d.keys()), ['TEST', 'TEST_foo', 'OVERRIDES', 'TEST_bar', 'TEST_local'])
 
     def test_multiple_combined_overrides(self):
         self.d.setVar("TEST_local_foo_bar", "testvalue3")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "testvalue3")
+        self.assertEqual(self.d.getVar("TEST"), "testvalue3")
 
     def test_multiple_overrides_unset(self):
         self.d.setVar("TEST2_local_foo_bar", "testvalue3")
-        bb.data.update_data(self.d)
-        self.assertEqual(self.d.getVar("TEST2", True), "testvalue3")
+        self.assertEqual(self.d.getVar("TEST2"), "testvalue3")
 
     def test_keyexpansion_override(self):
         self.d.setVar("LOCAL", "local")
         self.d.setVar("TEST_bar", "testvalue2")
         self.d.setVar("TEST_${LOCAL}", "testvalue3")
         self.d.setVar("TEST_foo", "testvalue4")
-        bb.data.update_data(self.d)
         bb.data.expandKeys(self.d)
-        self.assertEqual(self.d.getVar("TEST", True), "testvalue3")
+        self.assertEqual(self.d.getVar("TEST"), "testvalue3")
 
     def test_rename_override(self):
         self.d.setVar("ALTERNATIVE_ncurses-tools_class-target", "a")
         self.d.setVar("OVERRIDES", "class-target")
-        bb.data.update_data(self.d)
         self.d.renameVar("ALTERNATIVE_ncurses-tools", "ALTERNATIVE_lib32-ncurses-tools")
-        self.assertEqual(self.d.getVar("ALTERNATIVE_lib32-ncurses-tools", True), "a")
+        self.assertEqual(self.d.getVar("ALTERNATIVE_lib32-ncurses-tools"), "a")
 
     def test_underscore_override(self):
         self.d.setVar("TEST_bar", "testvalue2")
         self.d.setVar("TEST_some_val", "testvalue3")
         self.d.setVar("TEST_foo", "testvalue4")
         self.d.setVar("OVERRIDES", "foo:bar:some_val")
-        self.assertEqual(self.d.getVar("TEST", True), "testvalue3")
+        self.assertEqual(self.d.getVar("TEST"), "testvalue3")
 
 class TestKeyExpansion(unittest.TestCase):
     def setUp(self):
@@ -389,7 +386,7 @@
         with LogRecord() as logs:
             bb.data.expandKeys(self.d)
             self.assertTrue(logContains("Variable key VAL_${FOO} (A) replaces original key VAL_foo (B)", logs))
-        self.assertEqual(self.d.getVar("VAL_foo", True), "A")
+        self.assertEqual(self.d.getVar("VAL_foo"), "A")
 
 class TestFlags(unittest.TestCase):
     def setUp(self):
@@ -444,3 +441,167 @@
 
         self.assertFalse(bb.utils.contains_any("SOMEFLAG", "x", True, False, self.d))
         self.assertFalse(bb.utils.contains_any("SOMEFLAG", "x y z", True, False, self.d))
+
+
+class Serialize(unittest.TestCase):
+
+    def test_serialize(self):
+        import tempfile
+        import pickle
+        d = bb.data.init()
+        d.enableTracking()
+        d.setVar('HELLO', 'world')
+        d.setVarFlag('HELLO', 'other', 'planet')
+        with tempfile.NamedTemporaryFile(delete=False) as tmpfile:
+            tmpfilename = tmpfile.name
+            pickle.dump(d, tmpfile)
+
+        with open(tmpfilename, 'rb') as f:
+            newd = pickle.load(f)
+
+        os.remove(tmpfilename)
+
+        self.assertEqual(d, newd)
+        self.assertEqual(newd.getVar('HELLO'), 'world')
+        self.assertEqual(newd.getVarFlag('HELLO', 'other'), 'planet')
+
+
+# Remote datastore tests
+# These really only test the interface, since in actual usage we have a
+# tinfoil connector that does everything over RPC, and this doesn't test
+# that.
+
+class TestConnector:
+    d = None
+    def __init__(self, d):
+        self.d = d
+    def getVar(self, name):
+        return self.d._findVar(name)
+    def getKeys(self):
+        return set(self.d.keys())
+    def getVarHistory(self, name):
+        return self.d.varhistory.variable(name)
+    def expandPythonRef(self, varname, expr, d):
+        localdata = self.d.createCopy()
+        for key in d.localkeys():
+            localdata.setVar(d.getVar(key))
+        varparse = bb.data_smart.VariableParse(varname, localdata)
+        return varparse.python_sub(expr)
+    def setVar(self, name, value):
+        self.d.setVar(name, value)
+    def setVarFlag(self, name, flag, value):
+        self.d.setVarFlag(name, flag, value)
+    def delVar(self, name):
+        self.d.delVar(name)
+        return False
+    def delVarFlag(self, name, flag):
+        self.d.delVarFlag(name, flag)
+        return False
+    def renameVar(self, name, newname):
+        self.d.renameVar(name, newname)
+        return False
+
+class Remote(unittest.TestCase):
+    def test_remote(self):
+
+        d1 = bb.data.init()
+        d1.enableTracking()
+        d2 = bb.data.init()
+        d2.enableTracking()
+        connector = TestConnector(d1)
+
+        d2.setVar('_remote_data', connector)
+
+        d1.setVar('HELLO', 'world')
+        d1.setVarFlag('OTHER', 'flagname', 'flagvalue')
+        self.assertEqual(d2.getVar('HELLO'), 'world')
+        self.assertEqual(d2.expand('${HELLO}'), 'world')
+        self.assertEqual(d2.expand('${@d.getVar("HELLO")}'), 'world')
+        self.assertIn('flagname', d2.getVarFlags('OTHER'))
+        self.assertEqual(d2.getVarFlag('OTHER', 'flagname'), 'flagvalue')
+        self.assertEqual(d1.varhistory.variable('HELLO'), d2.varhistory.variable('HELLO'))
+        # Test setVar on client side affects server
+        d2.setVar('HELLO', 'other-world')
+        self.assertEqual(d1.getVar('HELLO'), 'other-world')
+        # Test setVarFlag on client side affects server
+        d2.setVarFlag('HELLO', 'flagname', 'flagvalue')
+        self.assertEqual(d1.getVarFlag('HELLO', 'flagname'), 'flagvalue')
+        # Test client side data is incorporated in python expansion (which is done on server)
+        d2.setVar('FOO', 'bar')
+        self.assertEqual(d2.expand('${@d.getVar("FOO")}'), 'bar')
+        # Test overrides work
+        d1.setVar('FOO_test', 'baz')
+        d1.appendVar('OVERRIDES', ':test')
+        self.assertEqual(d2.getVar('FOO'), 'baz')
+
+
+# Remote equivalents of local test classes
+# Note that these aren't perfect since we only test in one direction
+
+class RemoteDataExpansions(DataExpansions):
+    def setUp(self):
+        self.d1 = bb.data.init()
+        self.d = bb.data.init()
+        self.d1["foo"] = "value_of_foo"
+        self.d1["bar"] = "value_of_bar"
+        self.d1["value_of_foo"] = "value_of_'value_of_foo'"
+        connector = TestConnector(self.d1)
+        self.d.setVar('_remote_data', connector)
+
+class TestRemoteNestedExpansions(TestNestedExpansions):
+    def setUp(self):
+        self.d1 = bb.data.init()
+        self.d = bb.data.init()
+        self.d1["foo"] = "foo"
+        self.d1["bar"] = "bar"
+        self.d1["value_of_foobar"] = "187"
+        connector = TestConnector(self.d1)
+        self.d.setVar('_remote_data', connector)
+
+class TestRemoteConcat(TestConcat):
+    def setUp(self):
+        self.d1 = bb.data.init()
+        self.d = bb.data.init()
+        self.d1.setVar("FOO", "foo")
+        self.d1.setVar("VAL", "val")
+        self.d1.setVar("BAR", "bar")
+        connector = TestConnector(self.d1)
+        self.d.setVar('_remote_data', connector)
+
+class TestRemoteConcatOverride(TestConcatOverride):
+    def setUp(self):
+        self.d1 = bb.data.init()
+        self.d = bb.data.init()
+        self.d1.setVar("FOO", "foo")
+        self.d1.setVar("VAL", "val")
+        self.d1.setVar("BAR", "bar")
+        connector = TestConnector(self.d1)
+        self.d.setVar('_remote_data', connector)
+
+class TestRemoteOverrides(TestOverrides):
+    def setUp(self):
+        self.d1 = bb.data.init()
+        self.d = bb.data.init()
+        self.d1.setVar("OVERRIDES", "foo:bar:local")
+        self.d1.setVar("TEST", "testvalue")
+        connector = TestConnector(self.d1)
+        self.d.setVar('_remote_data', connector)
+
+class TestRemoteKeyExpansion(TestKeyExpansion):
+    def setUp(self):
+        self.d1 = bb.data.init()
+        self.d = bb.data.init()
+        self.d1.setVar("FOO", "foo")
+        self.d1.setVar("BAR", "foo")
+        connector = TestConnector(self.d1)
+        self.d.setVar('_remote_data', connector)
+
+class TestRemoteFlags(TestFlags):
+    def setUp(self):
+        self.d1 = bb.data.init()
+        self.d = bb.data.init()
+        self.d1.setVar("foo", "value of foo")
+        self.d1.setVarFlag("foo", "flag1", "value of flag1")
+        self.d1.setVarFlag("foo", "flag2", "value of flag2")
+        connector = TestConnector(self.d1)
+        self.d.setVar('_remote_data', connector)