Struct Layer0Config 

pub struct Layer0Config {
    pub enabled: bool,
    pub release_lto_thin: bool,
    pub release_codegen_units_1: bool,
    pub debug_line_tables_only: bool,
}

Layer 0 configuration pack knobs (bd-bqu38).

Every knob defaults to OFF and toggles independently — the kill/rollback contract from the master plan (§149: removed from defaults if it regresses representative p95, output equivalence, debugger behavior, or compatibility). Knobs are injected into remote cargo builds as CARGO_PROFILE_* environment variables, so enabling one never mutates any user-owned .cargo/config.toml. Verification lanes (--clean-overlay, --source-content-receipt) build exactly what the project declares and never receive the pack.

Fields

enabled: bool

Master switch: nothing is injected unless this is on.

release_lto_thin: bool

profile.release.lto = "thin" via CARGO_PROFILE_RELEASE_LTO=thin.

release_codegen_units_1: bool

profile.release.codegen-units = 1 via CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1.

debug_line_tables_only: bool

debug = "line-tables-only" for the dev and test profiles, via CARGO_PROFILE_{DEV,TEST}_DEBUG (bd-hoxgn). Full DWARF was about 77% of fleet debug/test binaries (2026-09-25 sweep), so this is the main lever on worker target size. Backtraces keep file and line; debuggers lose local variables. A host-level .cargo/config.toml cannot carry it: clean-overlay builds refuse any ancestor Cargo config (RCH-E413).

Implementations

impl Layer0Config

pub fn active_env(&self) -> Vec<(&'static str, &'static str)>

Environment pairs to inject into a remote cargo build.

Empty unless Self::enabled — the master switch gates every knob so an operator can disable the whole pack with one key. Order is stable (declaration order) for deterministic emission and test assertions.

Trait Implementations

impl Clone for Layer0Config

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Layer0Config

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

Formats the value using the given formatter.

impl Default for Layer0Config

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Layer0Config

where Layer0Config: Default,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Layer0Config

impl JsonSchema for Layer0Config

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for Layer0Config

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Layer0Config

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 Layer0Config