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#pragma once
#include "types.hh"
#include "flakeref.hh"
#include <variant>
#include <nlohmann/json.hpp>
namespace nix {
struct Value;
class EvalState;
class Store;
namespace flake {
static const size_t FLAG_REGISTRY = 0;
static const size_t USER_REGISTRY = 1;
static const size_t GLOBAL_REGISTRY = 2;
struct FlakeRegistry
{
std::map<FlakeRef, FlakeRef> entries;
};
typedef std::vector<std::shared_ptr<FlakeRegistry>> Registries;
std::shared_ptr<FlakeRegistry> readRegistry(const Path &);
void writeRegistry(const FlakeRegistry &, const Path &);
Path getUserRegistryPath();
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 AbstractDep
{
FlakeRef ref;
Hash narHash;
AbstractDep(const FlakeRef & flakeRef, const Hash & narHash)
: ref(flakeRef), narHash(narHash) {};
AbstractDep(const nlohmann::json & json);
nlohmann::json toJson() const;
Path computeStorePath(Store & store) const;
};
struct NonFlakeDep : AbstractDep
{
using AbstractDep::AbstractDep;
bool operator ==(const NonFlakeDep & other) const
{
return ref == other.ref && narHash == other.narHash;
}
};
struct FlakeDep;
struct FlakeInputs
{
std::map<FlakeRef, FlakeDep> flakeDeps;
std::map<FlakeAlias, NonFlakeDep> nonFlakeDeps;
FlakeInputs() {};
FlakeInputs(const nlohmann::json & json);
nlohmann::json toJson() const;
};
struct FlakeDep : FlakeInputs, AbstractDep
{
FlakeId id;
FlakeDep(const FlakeId & id, const FlakeRef & flakeRef, const Hash & narHash)
: AbstractDep(flakeRef, narHash), id(id) {};
FlakeDep(const nlohmann::json & json);
bool operator ==(const FlakeDep & other) const
{
return
id == other.id
&& ref == other.ref
&& narHash == other.narHash
&& flakeDeps == other.flakeDeps
&& nonFlakeDeps == other.nonFlakeDeps;
}
nlohmann::json toJson() const;
};
struct LockFile : FlakeInputs
{
bool operator ==(const LockFile & other) const
{
return
flakeDeps == other.flakeDeps
&& nonFlakeDeps == other.nonFlakeDeps;
}
LockFile() {}
LockFile(const nlohmann::json & json) : FlakeInputs(json) {}
LockFile(FlakeDep && dep)
{
flakeDeps = std::move(dep.flakeDeps);
nonFlakeDeps = std::move(dep.nonFlakeDeps);
}
nlohmann::json toJson() const;
};
struct SourceInfo
{
// Immutable flakeref that this source tree was obtained from.
FlakeRef resolvedRef;
Path storePath;
// Number of ancestors of the most recent commit.
std::optional<uint64_t> revCount;
// NAR hash of the store path.
Hash narHash;
// A stable timestamp of this source tree. For Git and GitHub
// flakes, the commit date (not author date!) of the most recent
// commit.
std::optional<time_t> lastModified;
SourceInfo(const FlakeRef & resolvRef) : resolvedRef(resolvRef) {};
};
struct Flake
{
FlakeId id;
FlakeRef originalRef;
std::string description;
SourceInfo sourceInfo;
std::vector<FlakeRef> inputs;
std::map<FlakeAlias, FlakeRef> nonFlakeInputs;
Value * vOutputs; // FIXME: gc
unsigned int epoch;
Flake(const FlakeRef & origRef, const SourceInfo & sourceInfo)
: originalRef(origRef), sourceInfo(sourceInfo) {};
};
struct NonFlake
{
FlakeAlias alias;
FlakeRef originalRef;
SourceInfo sourceInfo;
NonFlake(const FlakeRef & origRef, const SourceInfo & sourceInfo)
: originalRef(origRef), sourceInfo(sourceInfo) {};
};
Flake getFlake(EvalState &, const FlakeRef &, bool impureIsAllowed);
struct ResolvedFlake
{
Flake flake;
LockFile lockFile;
ResolvedFlake(Flake && flake, LockFile && lockFile)
: flake(flake), lockFile(lockFile) {}
};
ResolvedFlake resolveFlake(EvalState &, const FlakeRef &, HandleLockFile);
void callFlake(EvalState & state,
const Flake & flake,
const FlakeInputs & inputs,
Value & v);
void callFlake(EvalState & state,
const ResolvedFlake & resFlake,
Value & v);
void updateLockFile(EvalState &, const FlakeRef & flakeRef, bool recreateLockFile);
void gitCloneFlake(FlakeRef flakeRef, EvalState &, Registries, const Path & destDir);
}
}
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