lix/src/libexpr/flake/lockfile.hh
Eelco Dolstra c67407172d
Record original flakerefs in the lock file again
If 'input.<name>.uri' changes, then the entry in the lockfile for
input <name> should be considered stale.

Also print some messages when lock file entries are added/updated.
2019-09-18 21:57:57 +02:00

86 lines
1.9 KiB
C++

#pragma once
#include "flakeref.hh"
#include <nlohmann/json.hpp>
namespace nix {
class Store;
}
namespace nix::flake {
struct LockedInput;
/* Lock file information about the dependencies of a flake. */
struct LockedInputs
{
std::map<FlakeId, LockedInput> inputs;
LockedInputs() {};
LockedInputs(const nlohmann::json & json);
nlohmann::json toJson() const;
/* A lock file is dirty if it contains a dirty flakeref
(i.e. reference to a dirty working tree). */
bool isDirty() const;
};
/* Lock file information about a flake input. */
struct LockedInput : LockedInputs
{
FlakeRef ref, originalRef;
Hash narHash;
LockedInput(const FlakeRef & ref, const FlakeRef & originalRef, const Hash & narHash)
: ref(ref), originalRef(originalRef), narHash(narHash)
{
assert(ref.isImmutable());
};
LockedInput(const nlohmann::json & json);
bool operator ==(const LockedInput & other) const
{
return
ref == other.ref
&& narHash == other.narHash
&& inputs == other.inputs;
}
nlohmann::json toJson() const;
Path computeStorePath(Store & store) const;
};
/* An entire lock file. Note that this cannot be a FlakeInput for the
top-level flake, because then the lock file would need to contain
the hash of the top-level flake, but committing the lock file
would invalidate that hash. */
struct LockFile : LockedInputs
{
bool operator ==(const LockFile & other) const
{
return inputs == other.inputs;
}
LockFile() {}
LockFile(const nlohmann::json & json) : LockedInputs(json) {}
LockFile(LockedInput && dep)
{
inputs = std::move(dep.inputs);
}
nlohmann::json toJson() const;
static LockFile read(const Path & path);
void write(const Path & path) const;
};
std::ostream & operator <<(std::ostream & stream, const LockFile & lockFile);
}