install

Additional install commands

macOS

Homebrewverified · 100%

brew install topiary

local Homebrew formula metadata

Linux

Nixverified · 92%

nix profile install nixpkgs#topiary

nixpkgs package indexes · pkgs/by-name/to/topiary/package.nix · source: api.github.com

Windows

Windows Package Managerverified · 92%

winget install --id Tweag.Topiary -e

Windows Package Manager source index · Tweag.Topiary · source: cdn.winget.microsoft.com

overview

Package summary

Uniform formatter for simple languages, as part of the Tree-sitter ecosystem

Project links

Commands and aliases

topiary

history

Project history and usage

Topiary is a Rust code-formatting tool from Tweag that uses Tree-sitter grammars and query files to build formatters for multiple languages. Its project identity is a 'uniform formatter for simple languages' in the Tree-sitter ecosystem.

Project history

Topiary's changelog records an early prototype release in June 2022 and v0.1.0 in March 2023. Tweag announced the project publicly in March 2023 as a universal formatter engine aimed at both formatter authors and end users: authors write declarative formatting queries rather than a parser and engine, while users get consistent style from a single tool.

The Topiary Book explains the core architecture: Topiary relies on Tree-sitter parse trees and Tree-sitter query captures to decide where to add spacing, line breaks, and formatting actions. This makes the project part of the broader editor and parser ecosystem rather than a standalone formatter for only one language.

Through 2024 and 2025, releases added packaging, a CLI crate, dynamically fetched grammars, coverage and query tooling, OpenSCAD, WIT, SDML, Nickel and OCaml work, prefetching, man pages, and Tree-sitter upgrades. The changelog shows v0.7.3 at the end of 2025, while crates.io lists topiary-cli 0.7.3 as the current published CLI package in early 2026.

Adoption history

Topiary is still a specialist formatter rather than a universal default, but it has package-manager reach in the input metadata through Homebrew, Nix, and Winget. Its audience overlaps with Nix/Tweag/Tree-sitter users, formatter authors, language-tooling maintainers, and developers working on languages that lack a mature dedicated formatter.

How it is used

Topiary is used either as a CLI formatter or as a framework for defining formatting behavior. Formatter authors provide Tree-sitter grammars and query files; users can run the CLI to format supported languages, prefetch grammars, check formatting in CI, and inspect coverage of formatting queries.

Why package nerds care

Topiary matters to package nerds because it turns formatting support into packageable language data: grammars, query files, and CLI releases can be distributed separately from language compilers. That fits ecosystems such as Nix, Homebrew, Winget, Tree-sitter, and editor tooling, where small language tools are composed from reusable packages.

Timeline

2022: v0.0.1 prototype recorded in the changelog.
2023: v0.1.0 released and Tweag announced Topiary.
2024: v0.5.1 era adds dynamic grammar handling and topiary-cli packaging appears on crates.io.
2025: v0.6.x and v0.7.x add language support, Topiary Book documentation, man pages, and Tree-sitter upgrades.
2026: crates.io lists topiary-cli 0.7.3 as the current published CLI release.

Related projects

Tree-sitter, Nickel, OCaml, OpenSCAD, WIT, SDML, Nix, Homebrew, Winget, formatter tooling.

Sources

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

narrow executable package without higher-risk signals

Signals

metadata:no-higher-risk-signals

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 6 platform targets.
Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

Command	Kind	Exposure	Note
`topiary`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version0.7.3

manager updated2026-07-04

local dataok

upstreamcurrent

latest detectedv0.7.3

https://github.com/topiary/topiary

okNo freshness warnings were generated.

install metadata

Package metadata

Package key	brew:topiary
Version	0.7.3
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/topiary
Homepage	https://topiary.tweag.io/
Repository	https://github.com/topiary/topiary
Upstream docs	https://topiary.tweag.io/book
License	MIT
Source archive	https://github.com/topiary/topiary/archive/refs/tags/v0.7.3.tar.gz
Last updated	2026-07-04T16:53:46+09:00
Pulse	updated
Build dependencies	rust
Bottle	available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	topiary
Version Scheme	0
Revision	0
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Nix95%

topiary

nix profile install nixpkgs#topiary

normalized package name match
Matched by: Topiary

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/to/topiary/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

winget95%

Tweag.Topiary

winget install --id Tweag.Topiary -e

normalized package name match
Matched by: Topiary

Windows Package Manager source index · cdn.winget.microsoft.com · Windows Package Manager source index: Tweag.Topiary from https://cdn.winget.microsoft.com/cache/source.msix

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/topiary.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install topiary with Homebrew, Nix, winget