A pure-Ruby wrapper around enola, the architecture-graph tool by enola-labs. The gem versions itself; the enola release it drives is named in its UPSTREAM_VERSION, 0.4.19 here. The binary is not in the gem: the first command that needs it downloads the release for your platform, verifies it against the checksum the release publishes, and keeps it in a per-user cache. Every command and exit code is forwarded unchanged. This gem is not an enola-labs release.