Split dev dependencies into separate modules

[piotrpio]

Signed-off-by: Piotr Piotrowski piotr@synadia.com

[coveralls]

coverage: 85.35% (+0.08%) from 85.272%
when pulling 2e756a7 on split-dev-dependencies
into b9f59ec on main.

[wallyqs]

would this one be needed if we put a go.mod under encoders?

[piotrpio]

Not really under encoders - enc.go imports encoders/builtin, so even if we put it in a separate module, it would have to be added to root go.mod (with protobuf as an indirect dependency), so does not make sense.

We could in theory make encoders/protobuf a separate module but then we'd have to release and version it separately, not sure it's a good solution.

[wallyqs]

ah I see, thanks for checking

[eikemeier]

Why is this a good idea? Who else does it this way?

[alexbozhenko]

I guess that's because we do not want circular dependency between server and nats.go.
And nats.go import server for tests
https://go.dev/wiki/Modules#why-does-go-mod-tidy-record-indirect-and-test-dependencies-in-my-gomod