Dependency issues on install with Cloudsmith

[MathisHammel]

Describe the bug

When running the provided script available in the quick install guide, I get a version issue related to the Erlang version (it seems like the Cloudsmith mirror is providing Erlang 28 which is not supported).

The last step of the script fails with the following error, on a fresh install of Bookworm:

$ sudo apt-get install rabbitmq-server -y --fix-missing

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 rabbitmq-server : Depends: erlang-base (< 1:28.0) but 1:28.0-1 is to be installed or
                            erlang-base-hipe (< 1:28.0) but it is not installable or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-crypto (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-eldap (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-inets (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-mnesia (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-os-mon (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-parsetools (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-public-key (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-runtime-tools (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-ssl (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-syntax-tools (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-tools (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
                   Depends: erlang-xmerl (< 1:28.0) but 1:28.0-1 is to be installed or
                            esl-erlang (< 1:28.0) but it is not installable
E: Unable to correct problems, you have held broken packages.

Reproduction steps

1. Run the provided install script
2. An error appears

Expected behavior

Installation completes successfully

Additional context

No response

[MathisHammel]

For anyone else facing this problem, I think the version pinning guide should do the trick by pinning erlang to version 27.

Otherwise, do it manually:

# Remove Erlang 28
sudo apt-get purge erlang-base \
                        erlang-asn1 erlang-crypto erlang-eldap erlang-ftp erlang-inets \
                        erlang-mnesia erlang-os-mon erlang-parsetools erlang-public-key \
                        erlang-runtime-tools erlang-snmp erlang-ssl \
                        erlang-syntax-tools erlang-tftp erlang-tools erlang-xmerl

sudo apt-get --purge autoremove

# Reinstall Erlang 27 (version 27.3.4-1 is currently the latest)
sudo apt-get install -y erlang-base=1:27.3.4-1 \
                        erlang-asn1=1:27.3.4-1 erlang-crypto=1:27.3.4-1 erlang-eldap=1:27.3.4-1 \
                        erlang-ftp=1:27.3.4-1 erlang-inets=1:27.3.4-1 erlang-mnesia=1:27.3.4-1 \
                        erlang-os-mon=1:27.3.4-1 erlang-parsetools=1:27.3.4-1 erlang-public-key=1:27.3.4-1 \
                        erlang-runtime-tools=1:27.3.4-1 erlang-snmp=1:27.3.4-1 erlang-ssl=1:27.3.4-1 \
                        erlang-syntax-tools=1:27.3.4-1 erlang-tftp=1:27.3.4-1 erlang-tools=1:27.3.4-1 \
                        erlang-xmerl=1:27.3.4-1

[michaelklishin]

@MathisHammel our mirrors provide Erlang versions between 24 or so, all the way to 28. RabbitMQ Debian package correctly indicates what versions are supported.

I don't see why apt version pinning would be necessary.

We can add those versions to the doc guide, in fact, they were removed only a few months ago but it's a puzzle to my why apt isn't doing its job correctly in your case.

[michaelklishin]

I have deleted Erlang 28 from Cloudsmith and the mirrors.

I have no idea what could be missing in package metadata w.r.t. Erlang dependencies but that's the only short term solution: not publish Erlang 28.x packages until we finish testing it (on 28.0.1 or so) and list that version as supported.