Elamur Groupantsmova-hard-cases-config
The groupant beside tools/hard-cases/src/config.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.
Facts
Implementation material. A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.
Components
| component | label | where |
|---|---|---|
| approximant | partial | Forward approximant |
| ast | partial | syntax.json |
| composition | partial | Composition |
| cost | partial | Cost |
| descriptant | present | Descriptant |
| invariant | partial | Invariant |
| tests | finite evidence | Tests |
Obernants
The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.
| id | type | label | where |
|---|---|---|---|
behavior_complement | behavior_complement | partial source derived model | behavior_complement |
reverse_reconstruction | reverse_reconstruction | partial source derived model | reverse_reconstruction |
Model text
Descriptant
The mova-hard-cases-v1 configuration: list, lane root, source bundle commands, policy, held-out pins, en/prag models, gparse, Fish lane, witnesses, measurement, Eel track configurations, control; unknown fields refused; pinned files checked by SHA-256. Source: tools/hard-cases/src/config.rs.
Forward approximant
load(path) -> Config after schema, absolute-path, bound (pagers 1..8, page 1..256, targets 1..8, context 0..8, timeout 1..900, poll 1..60) and track-name checks; Pin::check -> path when the file's SHA-256 matches.
Invariant
A loaded configuration has absolute paths and bounded lane parameters; eel tracks are only shipped/internal.
Cost
One file read; pins hash their files on use.
Composition
Read by every command (main.rs).
behavior_complement
Does not create directories, start workers or verify that executables are the right programs beyond their pinned hashes. Evidence status: source-derived model with finite checks, not a proof.
reverse_reconstruction
The parsed Config serializes back to an equivalent JSON object; key order and formatting are not preserved.
Tests
cargo test --manifest-path tools/hard-cases/Cargo.toml --offline (2026-11-04: 9 unit tests, two identical runs) Finite fixtures and live samples; not a proof.
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/tools/hard-cases/src/config.rs.groupant/