anomalyco/rift

Source: https://github.com/anomalyco/rift

rift: better alternative to git worktrees

• copy on write (saves space)
• instant (< 0.1s on 10gb folder)
• fast cli
• use as FFI lib with bun or node

mac and linux+btrfs for now more support soon

Install

npm install -g rift-snapshot
# or
bun add -g rift-snapshot

Release archives are available from GitHub Releases.

Platforms

CLI

Initialize

cd ~/code/app
rift init

rift init selects an existing Rift root above the current directory, or the nearest Git root when no Rift root exists. Use --here to initialize exactly the selected directory.

On Linux, first initialization of an ordinary btrfs directory performs a reflink import into a new btrfs subvolume and swaps it into the same path. If the selected root is registered already, no conversion occurs. If its .rift marker is missing, rift init restores it and completes any required conversion.

Create

rift create
rift create --name parser-fix
rift create --into /fast/rifts

rift create searches upward for .rift, copies that managed workspace, records the immediate parent, and prints the new workspace path to stdout.

On Linux, it creates a writable btrfs snapshot. On macOS, it uses APFS clonefile.

When the workspace is a Git repository, the new workspace has detached HEAD and retains index and working-tree state.

List And Ancestors

rift list
rift ancestors

list prints direct active child workspaces. ancestors prints parent workspaces, nearest first.

Remove And Garbage Collection

rift remove                         # trash the current created rift subtree
rift remove -f ~/code/app           # unregister a source root
rift remove --children ~/code/app   # trash descendants, preserve the selected workspace
rift gc                             # physically delete trash and prune missing entries

Removing a created rift moves its active subtree into adjacent .trash storage. rift gc deletes that storage later.

Removing a source root requires -f in the CLI. The source directory remains on disk. Its .rift marker is removed. Existing registered descendants are moved into trash. Missing descendants are removed from the registry.

Shell Integration

eval "$(rift shell-init zsh)" # or bash

The shell wrapper changes directory after init conversion, create, or removal of the current created rift.

Storage

Each managed workspace has a .rift marker containing its identifier. An SQLite registry stores paths, parent identifiers, and trash entries.

Default created-workspace storage is adjacent to the registered source root:

~/code/app/                         source workspace
~/code/.rifts/app/parser-fix/       created workspace
~/code/.rifts/app/.trash/            removed workspace storage

JavaScript API

The package selects a Bun or Node FFI binding through conditional exports.

import { create, list, remove, gc } from "rift-snapshot";

const workspace = create({ from: process.cwd(), name: "schema-work" });
console.log(list({ of: process.cwd() }));
remove({ at: workspace });
gc();

Node.js

The Node binding requires the experimental FFI API in Node.js 26.1 or later:

node --experimental-ffi app.mjs

With Node’s permission model, also pass --allow-ffi.

Functions

init(options?: { at?: string; database?: string }): null
create(options?: { from?: string; name?: string; into?: string; database?: string }): string
remove(options?: { at?: string; all?: false; database?: string }): void
remove(options: { at?: string; all: true; database?: string }): string[]
list(options?: { of?: string; database?: string }): string[]
ancestors(options?: { of?: string; database?: string }): string[]
gc(options?: { database?: string }): string[]

The JavaScript init function initializes exactly at; Git-root selection and --here are CLI behavior.

Operation failures throw RiftError with a code and, when relevant, path.

Development

cargo test --workspace --locked
./scripts/install.sh

scripts/install.sh installs an optimized CLI binary to ${CARGO_HOME:-$HOME/.cargo}/bin/rift.

License

MIT