plugin-builder-cargo

Version	2026.182.0300
Repo	superproject
Plugin	yes — see the plugin reference

OUT-OF-TREE charly plugin serving the cargo builder’s BUILD-TIME step (OpResolve) + its DEPLOY-TIME IR shim. A standalone Go module dispatching to the shared sdk/kit logic (R3): OpResolve (→ kit.BuilderResolve — cargo is an INLINE builder, so the InlineFragment RUN cargo install --path /ctx, C10, no longer the core embedded vocabulary), OpCollectContext (cargo records no stage context — binaries are read from Cargo.toml [[bin]] host-side at install time) and OpReverse (cargo → cargo-uninstall when binaries are known). The deploy-time pair runs in the host build PRE-PASS, BEFORE the pure BuildDeployPlan compile, so the compiler never dials a plugin. Selection stays DETECTION (a candy’s Cargo.toml), never an authored external_builder:.

Acceptance plan

This candy’s plan: — the runnable spec charly check executes against a live deployment. check: steps are idempotent probes; run: steps change state.

Intent	Step
check	the out-of-tree cargo builder plugin ships a buildable Go module (go.mod + the provider main) the host builds + serves out-of-process for the build-time OpResolve + deploy-time OpCollectContext/OpReverse legs