Crate gen_adapter_forge 

gen-adapter-forge — typed declarative spec for gen adapters.

Every existing adapter (gen-cargo / gen-npm / gen-bundler) has the same shape:

• one or more manifest markers (Cargo.toml, package.json, …)
• zero or more lockfile markers (Cargo.lock, pnpm-lock.yaml, …)
• a registry (CratesIo / Npm / RubyGems / …)
• a constraint syntax family (semver-caret-default / semver-exact-default / bundler-pessimistic / …)
• dependency table names (dependencies / devDependencies / …)
• target-predicate shape (cargo cfg / npm engines+os / bundler platforms / pep-508 markers / none)
• workspace shape (members / workspaces array / single-package)

A typed AdapterSpec captures all of this. The forge component generates the boilerplate scaffold (lib.rs + error.rs + raw.rs + tests) from one spec; the adapter author only writes the format- specific parsing logic — typically <100 LOC.

Structs

AdapterSpec

Typed declarative adapter spec. One value of this struct generates a complete adapter scaffold. Authoring-side equivalent of the (defadapter …) Lisp form (M5+).

ScaffoldOutput

Forge output — the rendered scaffold ready to drop in a new crates/gen-<name>/ directory.

Enums

ConstraintFamily

LockfileFormat

ManifestFormat

TargetPredicateShape

WorkspaceShape

Functions

bundler_spec

cargo_spec

The cargo adapter as a typed spec — what gen-cargo would have been authored as if AdapterSpec existed before it.

forge

Forge a fresh adapter scaffold from a typed spec. Produces a directory’s worth of starter files:

npm_spec