Struct Derivation 

pub struct Derivation { /* private fields */ }

A Nix derivation loaded from its JSON representation.

Derivations are the build recipes used by the Nix store. They describe how to produce a store path from inputs. Use Derivation::from_json to construct one and Derivation::add_to_store to register it.

Implementations

impl Derivation

pub fn from_json( context: &Arc<Context>, store: &Store, json: &str, ) -> Result<Self>

Parse a derivation from its JSON representation.

Arguments

• context - The Nix context
• store - The store to use
• json - JSON string describing the derivation

Errors

Returns an error if the JSON is not a valid derivation description.

pub fn add_to_store(&self, store: &Store) -> Result<StorePath>

Add this derivation to the store and return its output store path.

Errors

Returns an error if the derivation cannot be registered in the store.

pub fn from_store_path( context: &Arc<Context>, store: &Store, path: &StorePath, ) -> Result<Self>

Read a derivation from the store by its store path.

Returns

The derivation object associated with the given .drv path.

Errors

Returns an error if the derivation cannot be read.

pub fn to_json(&self) -> Result<String>

Serialize this derivation to its JSON representation.

Returns

The derivation as a JSON string.

Errors

Returns an error if serialization fails.

Trait Implementations

impl Clone for Derivation

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 Derivation

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

Formats the value using the given formatter.

impl Drop for Derivation

fn drop(&mut self)

Executes the destructor for this type.

impl Send for Derivation