When I should use dependencies in Provider's constructor?

[AlexanderFarkas]

Provider((ref) => Repo(), dependencies: [])

[rrousselGit]

Specify dependencies when it depends on a provider that you may "scope".

If your provider isn't depending on anything, there's no value in specifying dependencies

[AlexanderFarkas]

Could you please provide an example? Haven't found it in the docs.