nix::InstallableValue Struct Reference

#include <installable-value.hh>

Inheritance diagram for nix::InstallableValue:

Public Member Functions
	InstallableValue (ref< eval_cache::CachingEvaluator > evaluator)
virtual std::pair< Value *, PosIdx >	toValue (EvalState &state)=0
virtual std::vector< ref< eval_cache::AttrCursor > >	getCursors (EvalState &state)
virtual ref< eval_cache::AttrCursor >	getCursor (EvalState &state)
UnresolvedApp	toApp (EvalState &state)
Public Member Functions inherited from nix::Installable
virtual std::string	what () const =0
virtual DerivedPathsWithInfo	toDerivedPaths (EvalState &state)=0
DerivedPathWithInfo	toDerivedPath (EvalState &state)
virtual std::optional< StorePath >	getStorePath ()

Static Public Member Functions
static InstallableValue &	require (Installable &installable)
static ref< InstallableValue >	require (ref< Installable > installable)
Static Public Member Functions inherited from nix::Installable
static std::vector< BuiltPathWithResult >	build (EvalState &state, ref< Store > evalStore, ref< Store > store, Realise mode, const Installables &installables, BuildMode bMode=bmNormal)
static std::vector< std::pair< ref< Installable >, BuiltPathWithResult > >	build2 (EvalState &state, ref< Store > evalStore, ref< Store > store, Realise mode, const Installables &installables, BuildMode bMode=bmNormal)
static std::set< StorePath >	toStorePathSet (EvalState &state, ref< Store > evalStore, ref< Store > store, Realise mode, OperateOn operateOn, const Installables &installables)
static std::vector< StorePath >	toStorePaths (EvalState &state, ref< Store > evalStore, ref< Store > store, Realise mode, OperateOn operateOn, const Installables &installables)
static StorePath	toStorePath (EvalState &state, ref< Store > evalStore, ref< Store > store, Realise mode, OperateOn operateOn, ref< Installable > installable)
static std::set< StorePath >	toDerivations (EvalState &state, ref< Store > store, const Installables &installables, bool useDeriver=false)
static BuiltPaths	toBuiltPaths (EvalState &state, ref< Store > evalStore, ref< Store > store, Realise mode, OperateOn operateOn, const Installables &installables)

Public Attributes
ref< eval_cache::CachingEvaluator >	evaluator

Protected Member Functions
std::optional< DerivedPathWithInfo >	trySinglePathToDerivedPaths (EvalState &state, Value &v, const PosIdx pos, std::string_view errorCtx)

Detailed Description

An Installable which corresponds a Nix langauge value, in addition to a collection of derived paths.

Member Function Documentation

getCursor()

ref< eval_cache::AttrCursor > nix::InstallableValue::getCursor ( EvalState & state )

virtual

Get the first and most preferred cursor this Installable could refer to, or throw an exception if none exists.

getCursors()

std::vector< ref< eval_cache::AttrCursor > > nix::InstallableValue::getCursors ( EvalState & state )

virtual

Get a cursor to each value this Installable could refer to. However if none exists, throw exception instead of returning empty vector.

Reimplemented in nix::InstallableFlake.

trySinglePathToDerivedPaths()

std::optional< DerivedPathWithInfo > nix::InstallableValue::trySinglePathToDerivedPaths ( EvalState & state, Value & v, const PosIdx pos, std::string_view errorCtx )

protected

Handles either a plain path, or a string with a single string context elem in the right format. The latter case is handled by EvalState::coerceToDerivedPath(); see it for details.

Parameters

v	Value that is hopefully a string or path per the above.
pos	Position of value to aid with diagnostics.
errorCtx	Arbitrary message for use in potential error message when something is wrong with v.

Returns

A derived path (with empty info, for now) if the value matched the above criteria.

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

• lix/libcmd/installable-value.hh
• lix/libcmd/installable-value.cc
• lix/nix/app.cc