message: Update comment about ResolveVersion default version.
diff: @@ -52,19 +52,20 @@ pub struct Resolve {
  version: ResolveVersion,
  }
  -/// A version to indicate how a `Cargo.lock` should be serialized. Currently V1
  -/// is the default and dates back to the origins of Cargo. A V2 is currently
  -/// being proposed which provides a much more compact representation of
  -/// dependency edges and also moves checksums out of `[metadata]`.
  +/// A version to indicate how a `Cargo.lock` should be serialized. Currently
  +/// V2 is the default when creating a new lockfile. If a V1 lockfile already
  +/// exists, it will stay as V1.
  ///
  /// It's theorized that we can add more here over time to track larger changes
  /// to the `Cargo.lock` format, but we've yet to see how that strategy pans out.
  #[derive(PartialEq, Eq, Clone, Copy, Debug, PartialOrd, Ord)]
  pub enum ResolveVersion {
  - // Historical baseline for when this abstraction was added.
  + /// Historical baseline for when this abstraction was added.
  V1,
  - // Update around 2019 where `dependencies` arrays got compressed and
  - // checksums are listed inline.
  + /// A more compact format, more amenable to avoiding source-control merge
  + /// conflicts. The `dependencies` arrays are compressed and checksums are
  + /// listed inline. Introduced in 2019 in version 1.38. New lockfiles use
  + /// V2 by default starting in 1.41.
  V2,
  }
  