rez config --json FIELD

[j0yu]

Simple addition to allow for

rez config --json platform_map
# {"os": {"CentOS-(\\d+)\\.(\\d+)(\\.(\\d+))?": "CentOS-\\1"}}

# Serialising for usage in another clean shell/environment e.g. docker
docker run --env REZ_PLATFORM_MAP_JSON="$(rez config --json platform_map)" centos:7

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Added

• --json flag to rez-config that will JSON format the output if the FIELD given is a dict/list