fabricatio-checkpoint 0.3.4

An extension of fabricatio

fabricatio-checkpoint

MIT

Worktree checkpointing via shadow Git repositories for fabricatio workflows. Save, diff, rollback individual files, or reset entire directories — without interfering with any existing Git repository.

Installation

pip install fabricatio[checkpoint]

For a full installation with all fabricatio components:

pip install fabricatio[full]

Overview

fabricatio-checkpoint maintains a bare Git shadow repository for each tracked worktree directory. It stages and commits file changes behind the scenes, enabling:

• Checkpoints — save worktree state at any point with a message
• Selective rollback — restore individual files to a previous commit without touching others
• Full reset — revert the entire worktree to a prior checkpoint
• Diffs — retrieve file-level changes between any commit and the current state
• Status — list modified, added, or deleted files since the last checkpoint

The shadow repositories live under ~/.fabricatio-checkpoint/ by default and never touch any existing .git directory.

Key Types

CheckpointService

Manages the lifecycle of shadow repositories. Created once per process via the singleton helper.

Method	Description
get_store(worktree_dir)	Returns the CheckPointStore for a directory (creates on first access)
workspaces()	Lists all tracked worktree directories
prune_invalid()	Removes stores whose worktrees no longer exist on disk

from fabricatio_checkpoint.inited_service import get_checkpoint_service

svc = get_checkpoint_service()
store = svc.get_store("/path/to/project")

CheckPointStore

A shadow repository bound to one worktree directory. Backed by a bare Git repo (Rust implementation via PyO3).

Method	Description
save(commit_msg=None)	Stage all changes and commit. Returns the commit OID.
head()	Returns the OID of the current HEAD commit.
commits()	Returns all commit OIDs in chronological order.
reset(commit_id)	Restore the entire worktree to a given commit.
rollback(commit_id, file_path)	Restore a single file from a commit.
get_file_diff(commit_id, file_path)	Returns the unified diff for a file at a commit.
get_status()	Lists changed files since HEAD (staged + unstaged).

store = svc.get_store("/path/to/project")

cid = store.save("snapshot before refactor")
store.rollback(cid, "src/main.py")
store.reset(cid)
print(store.get_file_diff(cid, "src/main.py"))

Checkpoint (Capability Mixin)

A UseLLM-compatible mixin for use within fabricatio agent roles.

Method	Description
save_checkpoint(msg)	Save current state with a message
rollback(commit_id, file_path)	Restore one file to a previous commit
reset_to_checkpoint(commit_id)	Reset entire worktree to a commit
get_file_diff(commit_id, file_path)	Diff one file against a commit
mount_checkpoint_store(store)	Attach a specific store (defaults to worktree_dir)
unmount_checkpoint_store()	Detach the current store

from fabricatio_checkpoint.capabilities.checkpoint import Checkpoint

class MyAgent(Checkpoint, SomeLLMRole):
    worktree_dir = Path("/path/to/project")

agent = MyAgent().mount_checkpoint_store()
cid = agent.save_checkpoint("before editing")
agent.rollback(cid, "config.toml")

prune_stores(stores_root)

Free function: deletes shadow repositories under stores_root whose worktree directories no longer exist.

from fabricatio_checkpoint.rust import prune_stores

prune_stores(Path.home() / ".fabricatio-checkpoint")

CLI

The package ships a ckpt command (requires pip install fabricatio-checkpoint[cli]):

ckpt --workspace /path/to/project save "checkpoint message"
ckpt --workspace /path/to/project reset <commit_id>
ckpt --workspace /path/to/project diff
ckpt --workspace /path/to/project ls
ckpt workspaces

Configuration

Configuration is loaded through fabricatio-core's config system under the "checkpoint" key:

• checkpoint_dir — directory for shadow repositories (default: ~/.fabricatio-checkpoint)
• cache_size — max cached CheckPointStore instances in memory (default: 100)

from fabricatio_checkpoint.config import checkpoint_config

checkpoint_config.checkpoint_dir = Path("/custom/checkpoint/path")
checkpoint_config.cache_size = 50

Dependencies

• fabricatio-core — core interfaces and config system

No additional Python dependencies required for basic use. The optional [cli] extra adds typer.

License

MIT — see LICENSE