Enum SurfaceMatch 

pub enum SurfaceMatch {
    Exact,
    Prefix,
}

How strictly the project surface is matched — a tunable knob.

The retry-Goodhart finding (docs/findings/2026-06-15-retry-and-the-honest-gate.md) showed Prefix is exploitable once the gate controls a retry loop rather than merely measuring: newt_agent._newt_core passes via the real newt_agent prefix, so the model, under retry pressure, drifts into that blind spot. Exact (the default) requires the import to be a module the surface actually declares — sound because R1’s manifest carries the full leaf+ancestor set. A coarse, hand-written surface that lists only roots may still want Prefix.

Variants

Exact

The module must be an exact member of the project surface.

Prefix

The module — or any dotted prefix — is in the surface (lax; legacy).

Trait Implementations

impl Clone for SurfaceMatch

fn clone(&self) -> SurfaceMatch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SurfaceMatch

impl Debug for SurfaceMatch

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

Formats the value using the given formatter.

impl Default for SurfaceMatch

fn default() -> SurfaceMatch

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SurfaceMatch

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for SurfaceMatch

impl PartialEq for SurfaceMatch

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for SurfaceMatch

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SurfaceMatch