# 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

```sh
sudo av install brew:frum
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install frum
```

  Evidence: local Homebrew formula metadata

## Package facts

- **Package key:** brew:frum
- **Package manager:** Homebrew
- **Version:** 0.1.2
- **Source summary:** Fast and modern Ruby version manager written in Rust
- **Homepage:** <https://github.com/TaKO8Ki/frum/>
- **Repository:** <https://github.com/TaKO8Ki/frum>
- **Generated:** 2026-08-03T19:37:03+00:00

## Executables

- frum (alias)

## Install behavior

- Bottle: not available

## Freshness

- Page generated: 2026-08-03
- Package-manager version: 0.1.2
## 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.

### Sources

- <https://github.com/TaKO8Ki/frum>
- <https://github.com/TaKO8Ki/frum/releases>


## Security Notes

infrastructure mutation or orchestration signal.

- **Geiger risk:** orange / medium
- infrastructure mutation or orchestration signal


## Combined YAML source

View the package source record on GitHub. [combined/frum.yml](https://github.com/mxcl/pkgdb/blob/main/combined/frum.yml)


## Sources

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- cross-ecosystem install command graph