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-rw-r--r--CHANGES.md17
-rw-r--r--changelog.d/9189.misc1
-rw-r--r--changelog.d/9193.bugfix1
-rw-r--r--changelog.d/9195.bugfix1
-rw-r--r--synapse/__init__.py2
-rw-r--r--synapse/python_dependencies.py4
-rw-r--r--synapse/util/iterutils.py2
-rw-r--r--tests/util/test_itertools.py12
-rw-r--r--tox.ini2
9 files changed, 34 insertions, 8 deletions
diff --git a/CHANGES.md b/CHANGES.md
index 1c64007e54..fb07650c2c 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,20 @@
+Synapse 1.26.0rc2 (2021-01-25)
+==============================
+
+Bugfixes
+--------
+
+- Fix receipts and account data not being sent down sync. Introduced in v1.26.0rc1. ([\#9193](https://github.com/matrix-org/synapse/issues/9193), [\#9195](https://github.com/matrix-org/synapse/issues/9195))
+- Fix chain cover update to handle events with duplicate auth events. Introduced in v1.26.0rc1. ([\#9210](https://github.com/matrix-org/synapse/issues/9210))
+
+
+Internal Changes
+----------------
+
+- Add an `oidc-` prefix to any `idp_id`s which are given in the `oidc_providers` configuration. ([\#9189](https://github.com/matrix-org/synapse/issues/9189))
+- Bump minimum `psycopg2` version to v2.8. ([\#9204](https://github.com/matrix-org/synapse/issues/9204))
+
+
 Synapse 1.26.0rc1 (2021-01-20)
 ==============================
 
diff --git a/changelog.d/9189.misc b/changelog.d/9189.misc
deleted file mode 100644
index 9a5740aac2..0000000000
--- a/changelog.d/9189.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add an `oidc-` prefix to any `idp_id`s which are given in the `oidc_providers` configuration.
diff --git a/changelog.d/9193.bugfix b/changelog.d/9193.bugfix
deleted file mode 100644
index 5233ffc3e7..0000000000
--- a/changelog.d/9193.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix receipts or account data not being sent down sync. Introduced in v1.26.0rc1.
diff --git a/changelog.d/9195.bugfix b/changelog.d/9195.bugfix
deleted file mode 100644
index 5233ffc3e7..0000000000
--- a/changelog.d/9195.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix receipts or account data not being sent down sync. Introduced in v1.26.0rc1.
diff --git a/synapse/__init__.py b/synapse/__init__.py
index d423856d82..3cd682f9e7 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -48,7 +48,7 @@ try:
 except ImportError:
     pass
 
-__version__ = "1.26.0rc1"
+__version__ = "1.26.0rc2"
 
 if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
     # We import here so that we don't have to install a bunch of deps when
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index c97e0df1f5..bfd46a3730 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -86,8 +86,8 @@ REQUIREMENTS = [
 
 CONDITIONAL_REQUIREMENTS = {
     "matrix-synapse-ldap3": ["matrix-synapse-ldap3>=0.1"],
-    # we use execute_batch, which arrived in psycopg 2.7.
-    "postgres": ["psycopg2>=2.7"],
+    # we use execute_values with the fetch param, which arrived in psycopg 2.8.
+    "postgres": ["psycopg2>=2.8"],
     # ACME support is required to provision TLS certificates from authorities
     # that use the protocol, such as Let's Encrypt.
     "acme": [
diff --git a/synapse/util/iterutils.py b/synapse/util/iterutils.py
index 6ef2b008a4..8d2411513f 100644
--- a/synapse/util/iterutils.py
+++ b/synapse/util/iterutils.py
@@ -78,7 +78,7 @@ def sorted_topologically(
         if node not in degree_map:
             continue
 
-        for edge in edges:
+        for edge in set(edges):
             if edge in degree_map:
                 degree_map[node] += 1
 
diff --git a/tests/util/test_itertools.py b/tests/util/test_itertools.py
index 522c8061f9..1ef0af8e8f 100644
--- a/tests/util/test_itertools.py
+++ b/tests/util/test_itertools.py
@@ -92,3 +92,15 @@ class SortTopologically(TestCase):
         # Valid orderings are `[1, 3, 2, 4]` or `[1, 2, 3, 4]`, but we should
         # always get the same one.
         self.assertEqual(list(sorted_topologically([4, 3, 2, 1], graph)), [1, 2, 3, 4])
+
+    def test_duplicates(self):
+        "Test that a graph with duplicate edges work"
+        graph = {1: [], 2: [1, 1], 3: [2, 2], 4: [3]}  # type: Dict[int, List[int]]
+
+        self.assertEqual(list(sorted_topologically([4, 3, 2, 1], graph)), [1, 2, 3, 4])
+
+    def test_multiple_paths(self):
+        "Test that a graph with multiple paths between two nodes work"
+        graph = {1: [], 2: [1], 3: [2], 4: [3, 2, 1]}  # type: Dict[int, List[int]]
+
+        self.assertEqual(list(sorted_topologically([4, 3, 2, 1], graph)), [1, 2, 3, 4])
diff --git a/tox.ini b/tox.ini
index 1a3489344f..95841e03f0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -118,7 +118,7 @@ commands =
     # Make all greater-thans equals so we test the oldest version of our direct
     # dependencies, but make the pyopenssl 17.0, which can work against an
     # OpenSSL 1.1 compiled cryptography (as older ones don't compile on Travis).
-    /bin/sh -c 'python -m synapse.python_dependencies | sed -e "s/>=/==/g" -e "s/psycopg2==2.6//" -e "s/pyopenssl==16.0.0/pyopenssl==17.0.0/" | xargs -d"\n" pip install'
+    /bin/sh -c 'python -m synapse.python_dependencies | sed -e "s/>=/==/g" -e "/psycopg2/d" -e "s/pyopenssl==16.0.0/pyopenssl==17.0.0/" | xargs -d"\n" pip install'
 
     # Install Synapse itself. This won't update any libraries.
     pip install -e ".[test]"