Automic VaultAutomic Vault

brew

Install efm-langserver with Homebrew, apk, apt, MacPorts, Nix, zypper

General purpose Language Server. Version 0.0.56 via Homebrew; verified 2026-07-08.

Install commandSecurity notes

install

Additional install commands

macOS

Homebrewverified · 100%
brew install efm-langserver

local Homebrew formula metadata

MacPortsverified · 94%
sudo port install efm-langserver

MacPorts ports tree · devel/efm-langserver/Portfile · source: api.github.com

Linux

Alpine Linux apkverified · 92%
sudo apk add efm-langserver

Alpine Linux edge package indexes · efm-langserver · source: dl-cdn.alpinelinux.org

Debian aptverified · 92%
sudo apt install efm-langserver

Debian stable package indexes · efm-langserver · source: deb.debian.org

Nixverified · 92%
nix profile install nixpkgs#efm-langserver

nixpkgs package indexes · pkgs/by-name/ef/efm-langserver/package.nix · source: api.github.com

openSUSE zypperverified · 92%
sudo zypper install efm-langserver

openSUSE Tumbleweed package metadata · efm-langserver · source: download.opensuse.org

overview

Package summary

General purpose Language Server

Commands and aliases

  • efm-langserver

history

Project history and usage

efm-langserver is a general-purpose Language Server Protocol bridge for external linters, formatters, hover commands, completion commands, and other command-line tools.

Project history

The public repository was created in 2019 by mattn. Its README describes a language server that parses error-message formats from configured commands, which lets editors consume ordinary CLI linting and formatting tools through LSP.

Adoption history

The project grew with the editor shift toward LSP clients. Its README includes setup examples for vim-lsp, coc.nvim, Emacs Eglot, Neovim built-in LSP via nvim-lspconfig, Helix, and VSCode, showing adoption across several editor families.

How it is used

Users install efm-langserver, create config.yaml, and map languages to external commands. The server does not bundle the linters or formatters; users install tools such as yapf, isort, markdownlint-cli, jq, eslint, black, mypy, or prettier separately.

Configuration can come from a config.yaml file or from LSP DidChangeConfiguration notifications, with documented Unix and Windows default paths.

Why package nerds care

efm-langserver matters in package metadata because it is glue: one binary can expose many existing command-line tools to any LSP-capable editor, reducing the need for per-editor integrations.

Timeline

  • 2019: Public GitHub repository created.
  • 2026: v0.0.56 published.

Related projects

  • Related projects are the Language Server Protocol itself, vim-lsp, coc.nvim, Eglot, nvim-lspconfig, Helix, VSCode, and the many external linters and formatters configured behind efm-langserver.

security posture

Risk level: blue

broad file, network, media, or database tool signal.

Risk classifier

blue risk · medium confidence · tool

Why

  • broad file, network, media, or database tool signal

Signals

  • text:server

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.

local files

Configuration and credential file locations

These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.

Configuration files

Config paths the tool may read or write during local use.

Unix
$XDG_CONFIG_HOME/efm-langserver/config.yaml~/.config/efm-langserver/config.yaml
Windows
%APPDATA%\efm-langserver\config.yaml

executables

Installed executables

CommandKindExposureNote
efm-langservercliglobal 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 version0.0.56
manager updated2026-07-08
local dataok
upstreamcurrent
latest detectedv0.0.56

https://github.com/mattn/efm-langserver

  • okNo freshness warnings were generated.

install metadata

Package metadata

Package keybrew:efm-langserver
Version0.0.56
Package managerHomebrew
Package manager pagehttps://formulae.brew.sh/formula/efm-langserver
Homepagehttps://github.com/mattn/efm-langserver
Repositoryhttps://github.com/mattn/efm-langserver
Upstream docshttps://github.com/mattn/efm-langserver#readme
LicenseMIT
Source archivehttps://github.com/mattn/efm-langserver/archive/refs/tags/v0.0.56.tar.gz
Last updated2026-07-08T06:09:51Z
Pulseupdated
Build dependenciesgo
Bottleavailable (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-installnot defined
Servicenone declared

registry facts

Source database details

Source DatabaseHomebrew formula API
Taphomebrew/core
Full Nameefm-langserver
Version Scheme0
Revision0
Head VersionHEAD
Bottle Stable Root URLhttps://ghcr.io/v2/homebrew/core
Deprecatedno
Disabledno
Keg Onlyno
URL Keys
  • head
  • 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.

Debian apt95%

efm-langserver 0.0.54-1+b4

General purpose Language Server (program)

https://github.com/mattn/efm-langserver

sudo apt install efm-langserver
  • Section: golang
  • Architecture: amd64
  • Source Package: efm-langserver
  • normalized package name match
  • Matched by: Efm Langserver
Debian stable package indexes · deb.debian.org · Debian stable package indexes: efm-langserver from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
Nix95%

efm-langserver

nix profile install nixpkgs#efm-langserver
  • normalized package name match
  • Matched by: Efm Langserver
nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/ef/efm-langserver/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
Ubuntu apt95%

efm-langserver 0.0.50-1

General purpose Language Server (program)

https://github.com/mattn/efm-langserver

sudo apt install efm-langserver
  • Section: universe/golang
  • Architecture: amd64
  • normalized package name match
  • Matched by: Efm Langserver
Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: efm-langserver from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz
apk95%

efm-langserver 0.0.56-r2

General purpose language server

https://github.com/mattn/efm-langserver

sudo apk add efm-langserver
  • License: MIT
  • Architecture: x86_64
  • Source Package: efm-langserver
  • 1 provides
  • normalized package name match
  • Matched by: Efm Langserver
Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: efm-langserver from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz
apk95%

efm-langserver-doc 0.0.56-r2

General purpose language server (documentation)

https://github.com/mattn/efm-langserver

sudo apk add efm-langserver-doc
  • License: MIT
  • Architecture: x86_64
  • Source Package: efm-langserver
  • normalized package name match
  • Matched by: Efm Langserver
Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: efm-langserver-doc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz
zypper95%

efm-langserver 0.0.54-1.5

General purpose language server

https://github.com/mattn/efm-langserver

sudo zypper install efm-langserver
  • License: MIT
  • Category: Unspecified
  • Architecture: x86_64
  • Source Package: efm-langserver
  • 1 provides
  • normalized package name match
  • Matched by: Efm Langserver
openSUSE Tumbleweed package metadata · download.opensuse.org · openSUSE Tumbleweed package metadata: efm-langserver from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst
MacPorts95%

efm-langserver

sudo port install efm-langserver
  • normalized package name match
  • Matched by: Efm Langserver
MacPorts ports tree · api.github.com · MacPorts ports tree: devel/efm-langserver/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

package graph

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

Related tools

  • goBuild dependency declared by Homebrew.

Same workflow

  • fish-lspShares av.db curated category or tags: cli, developer-tools, editor-integration, formatting, language-server.
  • codebook-lspShares av.db curated category or tags: cli, developer-tools, editor-integration, language-server, lsp.
  • dhall-lsp-serverShares av.db curated category or tags: cli, developer-tools, editor-integration, language-server, lsp.
  • golangci-lint-langserverShares av.db curated category or tags: cli, developer-tools, language-server, linting, lsp.
  • goplsShares av.db curated category or tags: cli, developer-tools, editor-integration, language-server, lsp.
  • jq-lspShares av.db curated category or tags: cli, developer-tools, editor-integration, language-server, lsp.

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.

Used sources

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