watchman

Install command: 
brew install watchman

Watch files and take action when they change

https://facebook.github.io/watchman/

License: MIT

Development: Pull requests

Formula JSON API: /api/formula/watchman.json

Formula code: watchman.rb on GitHub

Bottle (binary package) installation support provided for:

macOS on
Apple Silicon		 tahoe ✅
sequoia ✅
sonoma ✅
macOS on
Intel		 sonoma ✅
Linux ARM64 ✅
x86_64 ✅

Current versions:

stable ✅ 2026.06.15.00
head ⚡️ HEAD

Depends on:

edencommon 2026.06.15.00 Shared library for Watchman and Eden projects
fb303 2026.06.15.00 Thrift functions for querying information from a service
fbthrift 2026.06.15.00 Facebook's branch of Apache Thrift, including a new C++ server
fmt 12.2.0 Open-source formatting library for C++
folly 2026.06.15.00 Collection of reusable C++ library artifacts developed at Facebook
glog 0.7.1 Application-level logging library
pcre2 10.47 Perl compatible regular expressions library with a new API
python@3.14 3.14.6 Interpreted, interactive, object-oriented programming language

Depends on when building from source:

cmake 4.3.4 Cross-platform make
cpptoml 0.1.1 Header-only library for parsing TOML
gflags 2.3.0 Library for processing command-line flags
googletest 1.17.0 Google Testing and Mocking Framework
libevent 2.1.12 Asynchronous event library
mvfst 2026.06.15.00 QUIC transport protocol implementation
openssl@4 4.0.1 Cryptography and SSL/TLS Toolkit
pkgconf 2.5.1 Package compiler and linker metadata toolkit
python-setuptools 82.0.1 Easily download, build, install, upgrade, and uninstall Python packages
rust 1.96.0 Safe, concurrent, practical language

Analytics:

Installs (30 days)
watchman 23,995
watchman --HEAD 53
Installs on Request (30 days)
watchman 23,937
watchman --HEAD 53
Build Errors (30 days)
watchman 2
watchman --HEAD 2
Installs (90 days)
watchman 68,525
watchman --HEAD 166
Installs on Request (90 days)
watchman 68,363
watchman --HEAD 161
Installs (365 days)
watchman 314,085
watchman --HEAD 897
Installs on Request (365 days)
watchman 313,715
watchman --HEAD 888