Struct FlakeShape 

pub struct FlakeShape {
    pub name: String,
    pub type_marker: String,
    pub required_keys: Vec<String>,
    pub spread_from_output_fn: bool,
    pub never_leak_from_flake_body: Vec<String>,
}

Top-level flake result shape policy.

required_keys is informational only — the Rust assembler in flake_eval.rs is responsible for producing the values (they all require eval-time state the spec doesn’t have access to). The shape exists to answer yes/no decisions the assembler makes along the way.

Fields

name: String

type_marker: String

required_keys: Vec<String>

spread_from_output_fn: bool

never_leak_from_flake_body: Vec<String>

Implementations

impl FlakeShape

pub fn allow_body_key(&self, key: &str) -> bool

Is key allowed to be copied from the parsed flake body ({ description = ...; outputs = ...; }) onto the top-level flake result?

Note: the assembler always has to consult this — the default answer under CppNix parity is “no for most keys”. Only explicitly-allowed keys (typically inputs) should cross over, and those are handled by named inserts, not by body iteration.

pub fn spreads_output_fn(&self) -> bool

Whether the outputs-function’s returned attrset spreads (its keys merge directly) into the top-level flake result. CppNix says yes; every other policy is a departure.

Trait Implementations

impl Clone for FlakeShape

fn clone(&self) -> FlakeShape

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FlakeShape

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FlakeShape

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl HasName for FlakeShape

fn name(&self) -> &str

impl Serialize for FlakeShape

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Spec for FlakeShape

const CANONICAL_LISP: &'static str = crate::flake::CPPNIX_FLAKE_SHAPE_LISP

The embedded canonical Lisp source for this domain. Wrapped over include_str! in the domain’s own module.

fn load_canonical_all() -> Result<Vec<Self>, SpecError>

Compile the canonical source and return every authored instance. Default impl threads through crate::loader::load_all; domains generally don’t need to override.

fn load_named(name: &str) -> Result<Self, SpecError>

where Self: HasName,

Look up the canonical instance with the given name. Default impl scans load_canonical_all linearly; domains that store many instances may override with a hashmap.

impl TataraDomain for FlakeShape

const KEYWORD: &'static str = "defflake-shape"

The Lisp keyword (e.g., "defmonitor").

fn compile_from_args(args: &[Sexp]) -> Result<Self>

Parse the argument list (everything after the keyword) into Self.

fn compile_from_sexp(form: &Sexp) -> Result<Self, LispError>

Parse a complete form; validates the head symbol matches KEYWORD.