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Install goyacc with Homebrew
Parser Generator for Go. Version 1.0.3 via Homebrew; verified 2026-06-13.
install
Additional install commands
overview
Package summary
Parser Generator for Go
Project links
Commands and aliases
- goyacc
history
Project history and usage
modernc.org/goyacc is Jan Mercl's Go parser-generator command derived from the Go toolchain's goyacc lineage. It reads yacc grammars and emits Go parsers, while adding compatibility and diagnostics features beyond the older `go tool yacc` style.
Project history
The modernc.org implementation begins in public history in November 2014. Its source comments state that it uses portions of code previously published in the Go tool `yacc` program, while the Go tools documentation describes that upstream goyacc as largely transliterated from Inferno's Limbo version, itself largely transliterated from the Plan 9 C version.
The project moved its import path and repository root to modernc.org in 2018, and pkg.go.dev records `gitlab.com/cznic/goyacc` as the repository for the modernc.org module.
Adoption history
goyacc is part of a long Unix parser-generator tradition adapted for Go. The Go project used goyacc as an example in the Go 1.4 `go generate` announcement, showing how generated parsers fit into Go package maintenance even though generation is run explicitly by package authors.
How it is used
The command accepts a yacc input file or standard input and writes a Go parser, defaulting to `y.go`, with options for the symbol prefix, parser report output, follow sets, conflict explanations, and generated error examples. Generated parsers use a Go lexer interface instead of C yacc globals.
Why package nerds care
For package maintainers, goyacc is a compact bridge between old compiler-construction workflows and Go modules: grammars can live beside Go source, generation can be driven by `go generate`, and the installed binary is small enough to package directly in Homebrew.
Timeline
- 2014: modernc.org/goyacc public history begins and records the initial release work.
- 2014: Go 1.4 introduces `go generate`, with goyacc used as a code-generation example.
- 2015: The modernc.org command adds generated error-message support via examples.
- 2017: The command adds follow-set reporting.
- 2018: The project moves its repository root to modernc.org and tags v1.0.0.
- 2023: v1.0.3 tag updates dependencies.
Related projects
- golang.org/x/tools/cmd/goyacc is the Go tools implementation in the same yacc-for-Go lineage.
- Plan 9 yacc and Inferno yacc are earlier implementations named in the Go tools documentation.
- modernc.org/y and modernc.org/parser/yacc are related modernc parser packages used by the command.
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 8 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 |
|---|---|---|---|
goyacc | 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 version1.0.3
manager updated2026-06-13
local dataok
upstreamnot checked
latest detectednot detected
https://pkg.go.dev/modernc.org/goyacc
- infoRelease/tag comparison is only available for GitHub repositories.https://pkg.go.dev/modernc.org/goyaccnone confidence
install metadata
Package metadata
| Package key | brew:goyacc |
|---|---|
| Version | 1.0.3 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/goyacc |
| Homepage | https://pkg.go.dev/modernc.org/goyacc |
| Repository | https://gitlab.com/cznic/goyacc |
| Upstream docs | https://pkg.go.dev/modernc.org/goyacc |
| License | BSD-3-Clause |
| Source archive | https://gitlab.com/cznic/goyacc/-/archive/v1.0.3/goyacc-v1.0.3.tar.bz2 |
| Last updated | 2026-06-13T23:34:57+02:00 |
| Pulse | updated |
| Build dependencies | go |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, sonoma, ventura, 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 | goyacc |
| Version Scheme | 0 |
| Revision | 0 |
| Head Version | HEAD |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
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.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- package relationship graph
- package version freshness
- package-page enrichment