How to keep the sensu-plugin gem installed ?

[mnellemann]

I have manually installed 'sensu-plugins-mailer' on my sensu server, by running /opt/sensu/embedded/bin/gem install sensu-plugins-mailer. The mailer plugin depends on the 'sensu-plugin' gem, which is also installed.

When I apply my Puppet manifests, the sensu module is trying to remove the 'sensu-plugin' gem, but this fails because of the dependency from 'sensu-plugins-mailer'.

Debug: Prefetching sensu_gem resources for package
Debug: Executing '/opt/sensu/embedded/bin/gem list --local'
Debug: Executing '/opt/sensu/embedded/bin/gem uninstall -x -a sensu-plugin'
Error: Execution of '/opt/sensu/embedded/bin/gem uninstall -x -a sensu-plugin' returned 1: ERROR:  While executing gem ... (Gem::DependencyRemovalException)
    Uninstallation aborted due to dependent gem(s)

Error: /Stage[main]/Sensu::Package/Package[sensu-plugin]/ensure: change from ["1.2.0"] to absent failed: Execution of '/opt/sensu/embedded/bin/gem uninstall -x -a sensu-plugin' returned 1: ERROR:  While executing gem ... (Gem::DependencyRemovalException)
    Uninstallation aborted due to dependent gem(s)

How do I tell sensu-puppet (preferably by Hiera) to keep the sensu-plugin gem installed ?
I can only find ways to install plugins by file, or package (without the 'sensu_gem' provider).

[mnellemann]

I found the comment about setting sensu_plugin_version => 'installed' in #318, and that seems to fix it for me.