Started on https://github.com/juju/charm-tools/pull/320, I'd like to bring this discussion to the list.
The output directory for charm build can vary in seemingly unpredictable ways depending on how it is called, the environment, and the charm's metadata.yaml contents. This is due to historical reasons, primarily with how Juju 1.x worked and how charm paths worked prior to the advent of multi-series charms. However, now that 2.x and multi-series support are standard, I would like to push for simplifying the output directory, based on Merlijn's PR. Specifically, I'd like to push for the following changes: * Drop the series portion of the output directory (we recommend providing the series in the charm's metadata, making it redundant in the path). * Drop the "builds" portion of the output directory (that was mainly to distinguish it from the series portion). * Drop the current directory as a fallback option for the output directory (it causes more confusion than it saves). Thus, charm build would always require an output directory to be given either via --output-dir (-o) or via the $JUJU_REPOSITORY environment variable, and would always put the built charm in $output_dir/$charm_name Obviously, this is not backwards compatible, and may affect automated build systems, but I think it would be easy to adjust for and simplify things for everyone concerned. Thoughts? Objections?
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