@spec assert_lock_in_sync(Presubmit.Commit.t()) :: :ok

Asserts every hex dependency the commit adds to any mix.exs is present in a resulting mix.lock, and every one it removes is absent — the lockfile was regenerated with the change. Umbrella apps share the root lockfile.

Path and git dependencies without a lock entry are not required to appear.

@spec deps_added(Presubmit.Commit.t()) :: [Presubmit.MixFile.dep()]

Dependencies the commit adds to mix.exs.

@spec deps_removed(Presubmit.Commit.t()) :: [Presubmit.MixFile.dep()]

Dependencies the commit removes from mix.exs.

@spec version_bump(Presubmit.Commit.t()) :: {String.t() | nil, String.t()} | nil

The version the commit sets in mix.exs, if it changed it.