How to Update Ruby with Homebrew

How to update Ruby with Homebrew?

brew upgrade ruby

Should pull latest version of the package and install it.

brew update updates brew itself, not packages (formulas they call it)

Upgrading Global Ruby Version on macOS

As per advice from anothermh, uninstalled rbenv and brew versions of Ruby

Uninstallation

brew uninstall ruby for removing brew version

Use accepted answer on this SO article for removing rbenv

Install Ruby via RVM

Install RVM as per instructions || as per this

rvm install (ruby version)

rvm --default use (ruby version)

can use rvm list to see available ruby versions.

How can I update Ruby version 2.0.0 to the latest version in Mac OS X v10.10 (Yosemite)?

Open your terminal and run

curl -sSL https://raw.githubusercontent.com/rvm/rvm/master/binscripts/rvm-installer | bash -s stable

When this is complete, you need to restart your terminal for the rvm command to work.

Now, run rvm list known

This shows the list of versions of the Ruby interpreter.

Now, run rvm install ruby@latest to get the latest Ruby version.

If you type ruby -v in the terminal, you should see ruby X.X.X.

If it still shows you ruby 2.0., run rvm use ruby-X.X.X --default.

Prerequisites for Windows 10:

• C compiler. You can use http://www.mingw.org/
• make command available otherwise it will complain that "bash: make: command not found". You can install it by running mingw-get install msys-make
• Add "C:\MinGW\msys\1.0\bin" and "C:\MinGW\bin" to your path environment variable

Need help installing Ruby 2.7.2 on Mac

You need to install the latest ruby-build

$ brew unlink ruby-build # remove STABLE version
$ brew install --HEAD ruby-build 
$ rbenv install -l | grep '2.7.2'
2.7.2

Only latest stable releases for each Ruby implementation are shown.
Use 'rbenv install --list-all' to show all local versions.

Installing Ruby with Homebrew

in ~/.bash_profile add the following line

export PATH=/usr/local/Cellar/ruby/1.9.3-p194/bin:$PATH

When you're done, close your terminal and re-open it. You should be fine.

Alternatively, you can execute the follwing in each open shell instead of closing/re-opening:

source ~/.bash_profile

Note:
I highly recommend installing ruby via rvm or rbenv so you can manage multiple ruby versions and use gemsets.

Shopify CLI: Best way to update Ruby for Shopify on OSX 11?

Switching to Homebrew Ruby requires you update the PATH environment variable (zsh shell in OSX11 instead of bash) by running...

$ echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >> ~/.zshrc

I still see a Shopify warning that Ruby 3.1.0 is outside the range supported by the CLI but assume that's a Shopify issue because this page states a requirement of Ruby 2.7+.

Unable to update Ruby on macOS Catalina version 10.15.3

First you need add gpg key.

gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB

Then install rvm via CURL. If you don't have CURL, install it via Homebrew brew install curl

curl -sSL https://get.rvm.io | bash

then rvm list to get installed version of ruby.

then rvm list known to get the available version.

then rvm install 2.7.0 to install ruby 2.7.0.

then rvm --default use 2.7.0 to use it.

Install older Ruby versions on a M1 MacBook?

In order to make installing of Ruby versions 2.6.x or 2.7.x successful on M1 MacBook using either rbenv or asdf (asdf is used in this example) follow these steps:

Upgrade to the latest version of rbenv or asdf-ruby plugin using your prefered installation method. In my case it's asdf-ruby installed over homebrew:

brew upgrade asdf
asdf plugin update ruby

Reinstall the current versions of openssl, readline and ruby-build in order to have the latest versions and configs:

brew uninstall --ignore-dependencies readline
brew uninstall --ignore-dependencies openssl
brew uninstall --ignore-dependencies ruby-build
rm -rf /opt/homebrew/etc/openssl@1.1
brew install -s readline
brew install -s openssl
brew install -s ruby-build

In your shell config .bashrc or .zshrc add the following ENV variables:

export RUBY_CONFIGURE_OPTS="--with-openssl-dir=$(brew --prefix openssl@1.1)"
export LDFLAGS="-L/opt/homebrew/opt/readline/lib:$LDFLAGS"
export CPPFLAGS="-I/opt/homebrew/opt/readline/include:$CPPFLAGS"
export PKG_CONFIG_PATH="/opt/homebrew/opt/readline/lib/pkgconfig:$PKG_CONFIG_PATH"
export optflags="-Wno-error=implicit-function-declaration"
export LDFLAGS="-L/opt/homebrew/opt/libffi/lib:$LDFLAGS"
export CPPFLAGS="-I/opt/homebrew/opt/libffi/include:$CPPFLAGS"
export PKG_CONFIG_PATH="/opt/homebrew/opt/libffi/lib/pkgconfig:$PKG_CONFIG_PATH"

This will ensure that the proper libraries and headers are used during the installations and it will ignore the implicit-function-declaration that is preventing some versions to continue installation. Note that for some other shells like fish the exporting of these variables will be a bit different.

Now start a new terminal session and you can try installing the older ruby versions:

asdf install ruby 2.7.2
asdf install ruby 2.6.5

Note that really old versions below 2.5 might still have issues. Most of the credits go to this Github issue.

UPDATE

For Ruby 2.2 please change the following variable:

export RUBY_CONFIGURE_OPTS=openssl@1.0

And do a

asdf reshim ruby

Thanks @xjlin0 for this update

How can I switch to ruby 1.9.3 installed using Homebrew?

I suggest you take a look at rvm.
You can then set it as default with rvm use 1.9.3 --default

But if you are happy with your homebrew install.

Then just change the precedence of directories in the PATH

Here is my /etc/paths

# homebrews should always take precedence
/usr/local/bin

# the default stack
/usr/bin
/bin
/usr/sbin
/sbin

This is important generally for homebrew, else the system version of git, ruby, pg_admin,... will all be used instead of the brew version.

if you say which -a ruby you'll see all the installed rubies, and the precedence in the PATH

eg.

$ which -a ruby
/Users/matthew/.rvm/rubies/ruby-1.9.3-p0/bin/ruby
/Users/matthew/.rvm/bin/ruby
/usr/bin/ruby

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UPDATE: I now don't think you should change /etc/paths

Instead you need to check which of .profile, .bashrc, or .bash_login is being loaded in your shell, and just add /usr/local/bin to your path.

For me, I only have a .profile. You can create that file if none of those files already exist in your home directory.

# homebrews should always take precedence
export PATH=/usr/local/bin:$PATH

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