pub struct RegistryPackage<'a> {
    name: InternedString,
    vers: Version,
    deps: Vec<RegistryDependency<'a>>,
    features: BTreeMap<InternedString, Vec<InternedString>>,
    features2: Option<BTreeMap<InternedString, Vec<InternedString>>>,
    cksum: String,
    yanked: Option<bool>,
    links: Option<InternedString>,
    v: Option<u32>,
}
Expand description

A single line in the index representing a single version of a package.

Fields§

§name: InternedString§vers: Version§deps: Vec<RegistryDependency<'a>>§features: BTreeMap<InternedString, Vec<InternedString>>§features2: Option<BTreeMap<InternedString, Vec<InternedString>>>

This field contains features with new, extended syntax. Specifically, namespaced features (dep:) and weak dependencies (pkg?/feat).

This is separated from features because versions older than 1.19 will fail to load due to not being able to parse the new syntax, even with a Cargo.lock file.

§cksum: String§yanked: Option<bool>

If true, Cargo will skip this version when resolving.

This was added in 2014. Everything in the crates.io index has this set now, so this probably doesn’t need to be an option anymore.

§links: Option<InternedString>

Native library name this package links to.

Added early 2018 (see https://github.com/rust-lang/cargo/pull/4978), can be None if published before then.

§v: Option<u32>

The schema version for this entry.

If this is None, it defaults to version 1. Entries with unknown versions are ignored.

Version 2 format adds the features2 field.

This provides a method to safely introduce changes to index entries and allow older versions of cargo to ignore newer entries it doesn’t understand. This is honored as of 1.51, so unfortunately older versions will ignore it, and potentially misinterpret version 2 and newer entries.

The intent is that versions older than 1.51 will work with a pre-existing Cargo.lock, but they may not correctly process cargo update or build a lock from scratch. In that case, cargo may incorrectly select a new package that uses a new index format. A workaround is to downgrade any packages that are incompatible with the --precise flag of cargo update.

Trait Implementations§

Deserialize this value from the given Serde deserializer. Read more

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Should always be Self
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 192 bytes