Switch CLI tools to Thoas for JSON serializer; re-enable Dialyzer for 4 plugins (backport #15964)#15965
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michaelklishin merged 2 commits intov4.3.xfrom Apr 9, 2026
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…lugins Elixir 1.18+ introduces a standard library JSON module which conflicts with the `json` library we've been using in CLI tools for `--formatter=json` and such. Since the two Elixir versions are not compatible and we have reasons to not bump Elixir too aggressively just yet, the most pragmatic option was to switch CLI tools to use `thoas`, the Erlang JSON parser RabbitMQ core and HTTP API use. This unblocks Dialyzer runs in four plugins disabled about 10 months ago and reveals a `rabbitmq_mqtt` Dialyzer failure due to a field that was removed from a record but not its type spec. Due to the MQTT plugin issue above, this can only be backported to `v4.3.x`, a `v4.2.x` version will need some tweaks. (cherry picked from commit b4ed713)
at least as closely as practical for RabbitMQ's needs. (cherry picked from commit ff97d99)
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Elixir 1.18+ introduces a standard library JSON module which conflicts with the
jsonlibrary we've been using in CLI tools for--formatter=jsonand such.Since the two Elixir versions are not compatible
and we have reasons to not bump Elixir too aggressively just yet, the most pragmatic option was to switch CLI tools to use
thoas, the Erlang JSONparser RabbitMQ core and HTTP API use.
This unblocks Dialyzer runs in four plugins disabled about 10 months ago and reveals a
rabbitmq_mqttDialyzer failure due to a field that was removedfrom a record but not its type spec.
The plugins in question added CLI tools to their
PLT_APPS.Due to the MQTT plugin issue above, this can only
be backported to
v4.3.x, av4.2.xversionwill need some tweaks.
This is an automatic backport of pull request #15964 done by [Mergify](https://mergify.com).