I noticed the autopkgtest check on riscv64 failed for python3-mcp, and
had a look.  I was able to build the package on ricci.debian.org, and
trigger a failure by running pybuild-autopkgtest, but this time it only
failed in one test.  The problem seem to be performace related, and the
following patch got the failed test working.
--- python-mcp-1.28.1.orig/tests/shared/test_streamable_http.py
+++ python-mcp-1.28.1/tests/shared/test_streamable_http.py
@@ -2133,7 +2133,7 @@ async def test_streamable_http_multiple_
                         params=types.CallToolRequestParams(
                             name="tool_with_multiple_stream_closes",
                             # retry_interval=500ms, so sleep 600ms to ensure reconnect completes
-                            arguments={"checkpoints": 3, "sleep_time": 0.6},
+                            arguments={"checkpoints": 3, "sleep_time": 1.2},
                         ),
                     )
                 ),

Without this patch, the testing fail with this error message:

E        +  where 7 = len(['3', '4', '5', '6', '7', '8', ...])

tests/shared/test_streamable_http.py:2149: AssertionError

Perhaps there are other preformance related tests that are failing on
riscv64 too?

I notice from
<URL: https://ci.debian.net/packages/p/python-mcp/testing/riscv64/73945218/ >
the CI run on risv64 succeeded without any changes.  I guess someone
retried with a quicker machine or something.