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brew

Install frum with Homebrew

Fast and modern Ruby version manager written in Rust. Version 0.1.2 via Homebrew; verified from local package data.

Install commandSecurity notes

install

Additional install commands

macOS

Homebrewverified · 100%
brew install frum

local Homebrew formula metadata

overview

Package summary

Fast and modern Ruby version manager written in Rust

Commands and aliases

  • frum

history

Project history and usage

frum is a Ruby version manager written in Rust. Its README positions it as a fast, modern alternative in the Ruby toolchain space, with support for `.ruby-version` files, shell initialization, completions, and Ruby installation commands.

Project history

The project appeared publicly as a 0.1.0 alpha series in April 2021 and reached v0.1.0 in May 2021. Its README emphasizes a pure Rust implementation that does not use ruby-build, cross-platform support for macOS and Linux, and faster shell initialization than rbenv in the included benchmark.

The release history stayed small, with v0.1.2 published in November 2021. The README references fnm, a Rust-based Node.js version manager, which places frum in the family of small compiled version managers built for quick shell startup.

Adoption history

frum's official installation section documents Homebrew/Linuxbrew, Arch AUR packages, Cargo installation, and release binaries. The v0.1.1 release notes explicitly mention Linuxbrew installation, showing package-manager support as part of its early adoption path.

How it is used

Users initialize frum in their shell profile with `frum init`, then install, uninstall, list, and select Ruby versions with subcommands such as `install`, `versions`, `global`, and `local`. The tool also supports `.ruby-version` files so it can fit into existing Ruby project conventions.

The README documents `$HOME/.frum` as the default installation root, with `--frum-dir` and `FRUM_DIR` available when users need a customized location.

Why package nerds care

frum is notable as an example of the Rust rewrite wave reaching language-version managers: it borrows the fast-startup pitch common to tools like fnm while targeting Ruby workflows historically served by rbenv, chruby, RVM, and ruby-build-based tooling.

Timeline

  • 2021: v0.1.0-alpha.0 was published as the first GitHub release.
  • 2021: v0.1.0 followed in May with global config options.
  • 2021: v0.1.1 added documented Linuxbrew installation support.
  • 2021: v0.1.2 fixed Homebrew OpenSSL usage.

Related projects

  • The README lists Schniz/fnm as a reference project.
  • The benchmark compares shell initialization against rbenv, making rbenv an important adjacent Ruby version manager.

security posture

Risk level: orange

infrastructure mutation or orchestration signal.

Risk classifier

orange risk · medium confidence · infrastructure

Why

  • infrastructure mutation or orchestration signal

Signals

  • text:version manager

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

CommandKindExposureNote
frumcliglobal 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 version0.1.2
manager updated
local dataok
upstreamcurrent
latest detectedv0.1.2

https://github.com/TaKO8Ki/frum

  • infoNo package-manager update timestamp was available.low confidence

install metadata

Package metadata

Package keybrew:frum
Version0.1.2
Package managerHomebrew
Package manager pagehttps://formulae.brew.sh/formula/frum
Homepagehttps://github.com/TaKO8Ki/frum/
Repositoryhttps://github.com/TaKO8Ki/frum
Upstream docshttps://github.com/TaKO8Ki/frum
LicenseMIT
Source archivehttps://github.com/TaKO8Ki/frum/archive/refs/tags/v0.1.2.tar.gz
Build dependenciesrust
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 Namefrum
Version Scheme0
Revision0
Head VersionHEAD
Bottle Stable Root URLhttps://ghcr.io/v2/homebrew/core
Deprecatedno
Disabledno
Keg Onlyno
URL Keys
  • head
  • stable

package graph

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

Related tools

  • rustBuild dependency declared by Homebrew.

Same workflow

  • bobShares av.db curated category or tags: cli, developer-tools, rust, version-manager.
  • ryShares av.db curated category or tags: cli, developer-tools, ruby, version-manager.
  • juliaupShares av.db curated category or tags: cli, developer-tools, version-manager.
  • luaverShares av.db curated category or tags: cli, developer-tools, version-manager.
  • naveShares av.db curated category or tags: cli, developer-tools, version-manager.
  • phpbrewShares av.db curated category or tags: cli, developer-tools, version-manager.

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 package history
  • package relationship graph
  • package version freshness
  • package-page enrichment