Enum CargoResolverVersion

#[non_exhaustive]
pub enum CargoResolverVersion {
    V1,
    V1Install,
    V2,
    V3,
}

The version of Cargo’s feature resolver to use.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

V1

The “classic” feature resolver in Rust.

This feature resolver unifies features across inactive platforms, and also unifies features across normal, build and dev dependencies for initials. This may produce results that are surprising at times.

V1Install

The “classic” feature resolver in Rust, as used by commands like cargo install.

This resolver is the same as V1, except it doesn’t unify features across dev dependencies for initials. However, if CargoOptions::with_dev_deps is set to true, it behaves identically to the V1 resolver.

For more, see avoid-dev-deps in the Cargo reference.

V2

Version 2 of the feature resolver, available since Rust 1.51. This feature resolver does not unify features:

• across host (build) and target (regular) dependencies
• with dev-dependencies for initials, if tests aren’t currently being built
• with platform-specific dependencies that are currently inactive

Version 2 of the feature resolver can be enabled by specifying resolver = "2" in the workspace’s Cargo.toml. It is also the default resolver version for the Rust 2021 edition.

V3

Version 3 of the dependency resolver, available since Rust 1.84.

Version 3 of the resolver enables MSRV-aware dependency resolution. There are no changes to feature resolution compared to version 2.

Version 3 of the feature resolver can be enabled by specifying resolver = "3" in the workspace’s Cargo.toml. It is also the default resolver version for the Rust 2024 edition.

Trait Implementations

impl Clone for CargoResolverVersion

fn clone(&self) -> CargoResolverVersion

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CargoResolverVersion

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CargoResolverVersion

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for CargoResolverVersion

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for CargoResolverVersion

fn eq(&self, other: &CargoResolverVersion) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for CargoResolverVersion

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for CargoResolverVersion

impl Eq for CargoResolverVersion

impl StructuralPartialEq for CargoResolverVersion