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Features

• Pure Rust implementation not using ruby-build
• Cross-platform support (macOS, Linux)
• Works with .ruby-version files
• Auto-Completion

Goals

• Blazing-Fast Ruby Installation - built with speed in mind
• Cross-Platform - works on macOS, Linux and (Windows)

Benchmark

eval "$(frum init)" runs about 6 times faster than eval "$(rbenv init -)".

For more information, please see #16.

Installation

Homebrew (Linux/macOS)

If you’re using Homebrew or Linuxbrew, install the frum formula. For more information, please see Install Ruby with Frum written by Daniel Kehoe.

$ brew install frum

Arch Linux

If you’re using Arch Linux, install the frum-bin or frum package using your favorite AUR helper.

$ yay -S frum-bin

Cargo (Linux/macOS)

If you already have a Rust environment set up, you can use the cargo install command:

$ cargo install frum

Using a release binary (Linux/macOS)

• Download the latest release binary for your system
• Set the PATH environment variable
• Configure your shell profile

Usage

Shell Setup

You need to run some shell commands before using frum. All you have to do is evaluate the output of frum init. Check out the following guides for the shell you use:

Bash

add the following to your .bashrc:

eval "$(frum init)"

Zsh

add the following to your .zshrc:

eval "$(frum init)"

Fish shell

create ~/.config/fish/conf.d/frum.fish add this line to it:

frum init | source

Options

• --log-level: The log level of frum commands [default: info] [possible values: quiet, info, error].
• --ruby-build-mirror: [default: https://cache.ruby-lang.org/pub/ruby].
• --frum-dir: The root directory of frum installations [default: $HOME/.frum]. You can set frum-dir as the $FRUM_DIR environment variable. I recommend that you use the environment variable if you want to use your customized frum-dir globally.

Subcommands

• init: Sets environment variables for initializing frum.
• install: Installs the specified Ruby version.
  • -l, --list: Lists the Ruby versions available to install.
• uninstall: Uninstall a specific Ruby version.
• versions: Lists installed Ruby versions.
• global: Sets the global Ruby version.
• local: Sets the current Ruby version.

Ruby configuration options

Options to configure Ruby can be passed to the frum install command.

$ frum install --with-openssl-dir=<ssl_dir> # Specify the OpenSSL directory
$ frum install --with-jemalloc # Use jemalloc as allocator

You can also specify many other options that will be listed when running ./configure -h.

Contribution

Contributions, issues and pull requests are welcome!

Reference

• Schniz/fnm