mgo dependency?

[karnauskas]

go mod is picking up dependencies which are not used anywhere in the code.

eg following:

gopkg.in/mgo.v2

[takeda]

go mod why is showing me this:

github.com/juju/errors.test
github.com/juju/testing/checkers
gopkg.in/mgo.v2/bson```

[karnauskas]

It's defined in here https://github.com/juju/errors/blob/master/dependencies.tsv#L4 Why?

[howbazaar]

I think it is a transitive dependency due to some of the testing helpers from juju/testing.