#17383 Support partitioning by `environment` field for lint/fmt/fix/etc New issue created by chrisjrn Currently, the partitioning behavior for lint/fmt/fix involves a "planning" step, where each backend chooses how to partition its work. We're trying to make environment selection something that can be implemented without backend authors needing to think about it, so it would be useful if there were support for further partitioning each partition (e.g. by environment field on targets), such that we can dispatch each sub-partition to the appropriate environment. pantsbuild/pants