#include <derived-path.hh>

Public Member Functions
const StorePath &	getBaseStorePath () const
std::string	to_string (const Store &store) const
std::string	to_string_legacy (const Store &store) const
kj::Promise< Result< JSON > >	toJSON (Store &store) const
	DECLARE_CMP (DerivedPathBuilt)

Static Public Member Functions
static DerivedPathBuilt	parse (const Store &store, ref< SingleDerivedPath >, std::string_view, const ExperimentalFeatureSettings &xpSettings=experimentalFeatureSettings)

Public Attributes
ref< SingleDerivedPath >	drvPath
OutputsSpec	outputs

Detailed Description

A set of derived paths that are built from a derivation

Built derived paths are pair of a derivation and some output names. They are evaluated by building the derivation, and then replacing the output names with the resulting outputs.

Note that does mean a derived store paths evaluates to multiple opaque paths, which is sort of icky as expressions are supposed to evaluate to single values. Perhaps this should have just a single output name.

Member Function Documentation

◆ getBaseStorePath()

const StorePath & nix::DerivedPath::Built::getBaseStorePath ( ) const

Get the store path this is ultimately derived from (by realising and projecting outputs).

Note that this is not a property of the store object being referred to, but just of this path — how we happened to be referring to that store object. In other words, this means this function breaks "referential transparency". It should therefore be used only with great care.

◆ parse()

DerivedPath::Built nix::DerivedPath::Built::parse	(	const Store &	store,
		ref< SingleDerivedPath >	drv,
		std::string_view	outputsS,
		const ExperimentalFeatureSettings &	xpSettings = experimentalFeatureSettings )

static

The caller splits on the separator, so it works for both variants.

Parameters

xpSettings Stop-gap to avoid globals during unit tests.

◆ to_string()

std::string nix::DerivedPath::Built::to_string ( const Store & store ) const

Uses ^ as the separator

◆ to_string_legacy()

std::string nix::DerivedPath::Built::to_string_legacy ( const Store & store ) const

Uses ! as the separator

The documentation for this struct was generated from the following files:

lix/libstore/derived-path.hh
lix/libstore/derived-path.cc

Public Member Functions