two different Rust packages called `dpd-client`

[davepacheco]

In our system we have two distinct packages called dpd-client:

• There's one in the "dendrite" repo. This is used by:
  • swadm (in Dendrite)
  • tfportd (in Dendrite)`
  • ddm (in Maghemite)
  • ddmd (in Maghemite)
  • mgd (via mg-lower) (in Maghemite)
• There's one in the "omicron" repo. This is used by:
  • wicketd (in Omicron)
  • omicron-sled-agent (in Omicron)
  • omicron-nexus (in Omicron)

Rust package names are supposed to be unique. This happens to work, maybe because the packages in the above two groups are never built in the same workspace? Based on this comment: https://github.com/oxidecomputer/omicron/blob/68583ad7e931bfbab5f9b7c3aff9789609c84129/clients/dpd-client/build.rs#L5-L11

I gather that these clients are about equivalent and the second one exists only because the first one is private? But Maghemite is also public but still seems to use the (private) Dendrite client.

The new ls-apis tool works around this: https://github.com/oxidecomputer/omicron/blob/68583ad7e931bfbab5f9b7c3aff9789609c84129/dev-tools/ls-apis/src/workspaces.rs#L157-L195