macOS
Homebrewverified · 100%
brew install lspmuxlocal Homebrew formula metadata
brew
Install lspmux with Homebrew, apk, Nix
Share one language instance between multiple LSP clients to save resources. Version 0.3.0 via Homebrew; verified 2026-07-15. Also installable with nix: nix profile install nixpkgs#lspmux.
install
Additional install commands
Linux
Alpine Linux apkverified · 92%
sudo apk add lspmuxAlpine Linux edge package indexes · lspmux · source: dl-cdn.alpinelinux.org
Nixverified · 92%
nix profile install nixpkgs#lspmuxnixpkgs package indexes · pkgs/by-name/ls/lspmux/package.nix · source: api.github.com
overview
Package summary
Share one language instance between multiple LSP clients to save resources
Project links
Commands and aliases
- lspmux
history
Project history and usage
lspmux is a Language Server Protocol multiplexer that lets multiple editor clients share one language-server instance per workspace. Its README describes it as a proxy and client shim that multiplexes editor connections onto the appropriate language server to save resources.
Project history
The project started as ra-multiplex, focused on rust-analyzer. Its changelog shows early releases in January and February 2022 adding configuration, removing a nightly Rust requirement, improving client/server behavior, and adding initial support for language servers other than rust-analyzer.
In 2024, the project added status and reload commands, native LSP initialize-message handshakes, Unix socket support, and environment filtering. In October 2025, it migrated to Codeberg, changed license to EUPL-1.2, and was renamed from ra-multiplex to lspmux to reflect its broader language-server scope.
Adoption history
lspmux is a niche developer tool aimed at users who run multiple editor windows or clients against the same workspace. The README points users to Cargo installation and package-manager availability through Repology, while the supplied package facts list Homebrew, Alpine, and Nix.
How it is used
The usual setup is to run `lspmux server` as a user service and configure an editor to use `lspmux` as the language-server executable or connect directly to the lspmux socket. The README gives examples for rust-analyzer, CoC in Neovim, clangd, systemd user services on Linux, and launchd services on macOS.
Configuration is optional and stored in a TOML file in the system default configuration directory, with `~/.config/lspmux/config.toml` given as the Unix example. The README documents defaults for instance timeout, garbage-collection interval, TCP or Unix-socket listen/connect addresses, logging filters, and environment-variable filtering.
Why package nerds care
lspmux matters to package nerds because it is a resource-control tool for the LSP era. Rather than replacing an editor or a language server, it sits in the middle and makes repeated editor sessions cheaper, especially for heavy servers such as rust-analyzer.
Timeline
- 2022: ra-multiplex 0.1.x releases add configuration and early support for non-rust-analyzer servers.
- 2024: 0.2.x releases add status/reload commands, Unix sockets, native LSP handshake changes, and environment filtering.
- 2025: Repository migrates to Codeberg and license changes to EUPL-1.2.
- 2025: Project is renamed from ra-multiplex to lspmux in v0.3.0.
Related projects
- Related projects include rust-analyzer, clangd, Neovim LSP clients, CoC, and the Language Server Protocol itself.
Sources
security posture
Risk level: orange
broad file, network, media, or database tool signal. formula declares a Homebrew service.
Risk classifier
orange risk · medium confidence · infrastructure
Why
- broad file, network, media, or database tool signal
- formula declares a Homebrew service
Signals
- metadata:service
- text:client
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Formula metadata declares a service or daemon block.
- Homebrew bottle metadata is available for 6 platform targets.
- Installs with 1 runtime dependencies.
- 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
~/.config/lspmux/config.toml
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
lspmux | 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 generated2026-07-25
manager version0.3.0
manager updated2026-07-15
local dataok
upstreamnot checked
latest detectednot detected
https://codeberg.org/p2502/lspmux
- infoRelease/tag comparison is only available for GitHub repositories.https://codeberg.org/p2502/lspmuxnone confidence
install metadata
Package metadata
| Package key | brew:lspmux |
|---|---|
| Version | 0.3.0 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/lspmux |
| Homepage | https://codeberg.org/p2502/lspmux |
| Repository | https://codeberg.org/p2502/lspmux |
| Upstream docs | https://codeberg.org/p2502/lspmux |
| License | EUPL-1.2 |
| Source archive | https://codeberg.org/p2502/lspmux/archive/v0.3.0.tar.gz |
| Last updated | 2026-07-15T08:34:20Z |
| Pulse | updated |
| Dependencies | rust-analyzer |
| Build dependencies | rust |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | lspmux |
| 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 database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Nix95%
lspmux
nix profile install nixpkgs#lspmux- normalized package name match
- Matched by: Lspmux
apk95%
lspmux 0.3.0-r0
Share one instance of an LSP between multiple clients
https://codeberg.org/p2502/lspmux
sudo apk add lspmux- License: EUPL-1.2
- Architecture: x86_64
- Source Package: lspmux
- 1 dependencies
- 1 provides
- normalized package name match
- Matched by: Lspmux
apk95%
lspmux-doc 0.3.0-r0
Share one instance of an LSP between multiple clients (documentation)
https://codeberg.org/p2502/lspmux
sudo apk add lspmux-doc- License: EUPL-1.2
- Architecture: x86_64
- Source Package: lspmux
- normalized package name match
- Matched by: Lspmux
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 configuration and credential file locations
- curated package history
- external package-manager database matches
- package relationship graph
- package version freshness
- package-page enrichment