ca96f52194
That way things (like `nix flake check`) can evaluate the `app` outputs without having to build anything
127 lines
3 KiB
C++
127 lines
3 KiB
C++
#pragma once
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#include "util.hh"
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#include "path.hh"
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#include "path-with-outputs.hh"
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#include "derived-path.hh"
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#include "eval.hh"
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#include "flake/flake.hh"
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#include <optional>
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namespace nix {
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struct DrvInfo;
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struct SourceExprCommand;
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namespace eval_cache { class EvalCache; class AttrCursor; }
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struct App
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{
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std::vector<StorePathWithOutputs> context;
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Path program;
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// FIXME: add args, sandbox settings, metadata, ...
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};
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struct UnresolvedApp
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{
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App unresolved;
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App resolve(ref<Store>);
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};
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struct Installable
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{
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virtual ~Installable() { }
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virtual std::string what() = 0;
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virtual DerivedPaths toDerivedPaths() = 0;
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DerivedPath toDerivedPath();
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UnresolvedApp toApp(EvalState & state);
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virtual std::pair<Value *, Pos> toValue(EvalState & state)
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{
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throw Error("argument '%s' cannot be evaluated", what());
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}
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/* Return a value only if this installable is a store path or a
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symlink to it. */
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virtual std::optional<StorePath> getStorePath()
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{
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return {};
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}
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virtual std::vector<std::pair<std::shared_ptr<eval_cache::AttrCursor>, std::string>>
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getCursors(EvalState & state);
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std::pair<std::shared_ptr<eval_cache::AttrCursor>, std::string>
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getCursor(EvalState & state);
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virtual FlakeRef nixpkgsFlakeRef() const
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{
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return FlakeRef::fromAttrs({{"type","indirect"}, {"id", "nixpkgs"}});
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}
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};
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struct InstallableValue : Installable
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{
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ref<EvalState> state;
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InstallableValue(ref<EvalState> state) : state(state) {}
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struct DerivationInfo
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{
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StorePath drvPath;
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std::optional<StorePath> outPath;
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std::string outputName;
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};
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virtual std::vector<DerivationInfo> toDerivations() = 0;
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DerivedPaths toDerivedPaths() override;
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};
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struct InstallableFlake : InstallableValue
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{
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FlakeRef flakeRef;
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Strings attrPaths;
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Strings prefixes;
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const flake::LockFlags & lockFlags;
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mutable std::shared_ptr<flake::LockedFlake> _lockedFlake;
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InstallableFlake(
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SourceExprCommand * cmd,
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ref<EvalState> state,
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FlakeRef && flakeRef,
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Strings && attrPaths,
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Strings && prefixes,
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const flake::LockFlags & lockFlags);
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std::string what() override { return flakeRef.to_string() + "#" + *attrPaths.begin(); }
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std::vector<std::string> getActualAttrPaths();
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Value * getFlakeOutputs(EvalState & state, const flake::LockedFlake & lockedFlake);
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std::tuple<std::string, FlakeRef, DerivationInfo> toDerivation();
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std::vector<DerivationInfo> toDerivations() override;
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std::pair<Value *, Pos> toValue(EvalState & state) override;
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std::vector<std::pair<std::shared_ptr<eval_cache::AttrCursor>, std::string>>
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getCursors(EvalState & state) override;
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std::shared_ptr<flake::LockedFlake> getLockedFlake() const;
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FlakeRef nixpkgsFlakeRef() const override;
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};
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ref<eval_cache::EvalCache> openEvalCache(
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EvalState & state,
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std::shared_ptr<flake::LockedFlake> lockedFlake);
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}
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