Timescaledb: Release candidate instead of stable version is installed when following docs instructions

[NeroVanbiervliet]

Relevant system information:

• OS: Ubuntu
• PostgreSQL version: 12
• Installation method: apt in docker

Describe the bug
Release candidate is installed instead of the latest stable version

To Reproduce
Follow installation steps of the docs

Expected behavior
Version 1.7.4 is installed

Actual behavior
Version 2.0.0-rc1 is installed

Additional context
The following error message shown by postgres upon adding the extension with psql --dbname <db_name> -c "CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;"

ERROR:  extension "timescaledb" has no installation script nor update path for version "2.0.0-rc1"

[WGH-]

The problem is not just it's an RC version. The new loader package version is simply broken, and it replaced the old one.

[Barolina]

what to do?

[svenklemm]

Unfortunately the package update for the loader package pulled in some 2.0 stuff that was supposed to stay hidden unless explicitly requested. As a temporary workaround you can install 1.7.4 with the following command:

CREATE EXTENSION IF NOT EXISTS timescaledb VERSION '1.7.4';

[svenklemm]

Packages should be fixed now. Feel free to reopen if the problem persists.