Struct BuildIdentity 

pub struct BuildIdentity {
    pub source_tree: ContentHash,
    pub cargo_lock: ContentHash,
    pub rust_toolchain: ContentHash,
    pub tf_config: ContentHash,
    pub target: TargetTriple,
    pub profile: Profile,
}

The complete set of inputs whose identity determines a build artifact.

This is the dedupe key behind AC#5 (identical source state ⇒ cache hit, build skipped) and the provenance record behind AC#4 (never serve red: the server only ever swaps to an artifact whose BuildIdentity it can name). Each component is carried as its own type so the contract is explicit about what makes a build distinct; folding these into the single InputHash CAS key is the CAS owner’s job and is intentionally not specified here.

Two builds with an Eq BuildIdentity MUST be substitutable. If a real input is not represented here, identical-key collisions become wrong-artifact bugs — so additions to this struct are a deliberate contract change, not an implementation detail.

Fields

source_tree: ContentHash

Hash over every tracked source file in the crate/workspace tree.

cargo_lock: ContentHash

Hash of Cargo.lock — pins the exact resolved dependency graph.

rust_toolchain: ContentHash

Hash of the resolved Rust toolchain (rust-toolchain.toml content / pinned channel + version). A toolchain bump must invalidate the cache.

tf_config: ContentHash

Hash of the cargoless config file (tf.toml, decision D6). Config changes the build, so it is part of the identity.

target: TargetTriple

The target triple (typically wasm32-unknown-unknown).

profile: Profile

The cargo profile (always Profile::Dev for the v0 inner loop).

Trait Implementations

impl Clone for BuildIdentity

fn clone(&self) -> BuildIdentity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BuildIdentity

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

Formats the value using the given formatter.

impl Eq for BuildIdentity

impl Hash for BuildIdentity

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

where __H: Hasher,

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 BuildIdentity

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BuildIdentity