lix/src/libexpr/flake/flake.hh

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#pragma once
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#include "types.hh"
#include "flakeref.hh"
#include "lockfile.hh"
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namespace nix {
struct Value;
class EvalState;
namespace fetchers { struct Tree; }
namespace flake {
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enum HandleLockFile : unsigned int
{ AllPure // Everything is handled 100% purely
, TopRefUsesRegistries // The top FlakeRef uses the registries, apart from that, everything happens 100% purely
, UpdateLockFile // Update the existing lockfile and write it to file
, UseUpdatedLockFile // `UpdateLockFile` without writing to file
, RecreateLockFile // Recreate the lockfile from scratch and write it to file
, UseNewLockFile // `RecreateLockFile` without writing to file
};
struct FlakeInput
{
FlakeRef ref;
bool isFlake = true;
FlakeInput(const FlakeRef & ref) : ref(ref) {};
};
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struct Flake
{
FlakeRef originalRef;
FlakeRef resolvedRef;
std::optional<std::string> description;
std::shared_ptr<const fetchers::Tree> sourceInfo;
std::map<FlakeId, FlakeInput> inputs;
Value * vOutputs; // FIXME: gc
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unsigned int edition;
~Flake();
};
Flake getFlake(EvalState & state, const FlakeRef & flakeRef, bool allowLookup);
/* Fingerprint of a locked flake; used as a cache key. */
typedef Hash Fingerprint;
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struct ResolvedFlake
{
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Flake flake;
LockFile lockFile;
Fingerprint getFingerprint() const;
};
ResolvedFlake resolveFlake(EvalState &, const FlakeRef &, HandleLockFile);
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void callFlake(EvalState & state,
const Flake & flake,
const LockedInputs & inputs,
Value & v);
void callFlake(EvalState & state,
const ResolvedFlake & resFlake,
Value & v);
void updateLockFile(EvalState &, const FlakeRef & flakeRef, bool recreateLockFile);
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}
}