Struct Value 

pub struct Value { /* private fields */ }

A pointer to a value or thunk, to be used with EvalState methods.

Shared Evaluation State

Multiple Value instances can reference the same underlying Nix value. This occurs when a Value is cloned, or when multiple Nix expressions reference the same binding.

When any reference to a thunk is evaluated—whether through force, other EvalState methods, or indirectly as a consequence of evaluating something else—all references observe the evaluated result. This means value_type_unforced can return None (thunk) initially but a specific type later, even without directly operating on that Value. The state will not regress back to a less determined state.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Drop for Value

fn drop(&mut self)

Executes the destructor for this type.