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Installation

Basic GitHub Checkout

This will get you going with the latest version of goenv and make it easy to fork and contribute any changes back upstream.

  1. Check out goenv where you want it installed. A good place to choose is $HOME/.goenv (but you can install it somewhere else).

     $ git clone https://github.com/syndbg/goenv.git ~/.goenv

  2. Define environment variable GOENV_ROOT to point to the path where goenv repo is cloned and add $GOENV_ROOT/bin to your $PATH for access to the goenv command-line utility.

     $ echo 'export GOENV_ROOT="$HOME/.goenv"' >> ~/.bash_profile
 $ echo 'export PATH="$GOENV_ROOT/bin:$PATH"' >> ~/.bash_profile

    Zsh note: Modify your ~/.zshenv file instead of ~/.bash_profile. Ubuntu note: Modify your ~/.bashrc file instead of ~/.bash_profile.

  3. Add goenv init to your shell to enable shims, management of GOPATH and GOROOT and auto-completion. Please make sure eval "$(goenv init -)" is placed toward the end of the shell configuration file since it manipulates PATH during the initialization.

     $ echo 'eval "$(goenv init -)"' >> ~/.bash_profile

    Zsh note: Modify your ~/.zshenv or ~/.zshrc file instead of ~/.bash_profile. Ubuntu note: Modify your ~/.bashrc file instead of ~/.bash_profile.

    General warning: There are some systems where the BASH_ENV variable is configured to point to .bashrc. On such systems you should almost certainly put the abovementioned line eval "$(goenv init -) into .bash_profile, and not into .bashrc. Otherwise you may observe strange behaviour, such as goenv getting into an infinite loop. See pyenv's issue #264 for details.

  4. If you want goenv to manage GOPATH and GOROOT (recommended), add GOPATH and GOROOT to your shell after eval "$(goenv init -)".

     $ echo 'export PATH="$GOROOT/bin:$PATH"' >> ~/.bash_profile
 $ echo 'export PATH="$GOPATH/bin:$PATH"' >> ~/.bash_profile

    Zsh note: Modify your ~/.zshenv or ~/.zshrc file instead of ~/.bash_profile. Ubuntu note: Modify your ~/.bashrc file instead of ~/.bash_profile. General warning: There are some systems where the BASH_ENV variable is configured to point to .bashrc. On such systems you should almost certainly put the abovementioned line eval "$(goenv init -) into .bash_profile, and not into .bashrc. Otherwise you may observe strange behaviour, such as goenv getting into an infinite loop. See pyenv's issue #264 for details.

  5. Restart your shell so the path changes take effect. You can now begin using goenv.

     $ exec $SHELL

  6. Install Go versions into $GOENV_ROOT/versions. For example, to download and install Go 1.12.0, run:

     $ goenv install 1.12.0

    NOTE: It downloads and places the prebuilt Go binaries provided by Google.

An example .zshrc that is properly configured may look like

export GOENV_ROOT="$HOME/.goenv"
export PATH="$GOENV_ROOT/bin:$PATH"
eval "$(goenv init -)"
export PATH="$GOROOT/bin:$PATH"
export PATH="$GOPATH/bin:$PATH"

Homebrew on Mac OS X

You can also install goenv using the Homebrew package manager for Mac OS X.

$ brew update
$ brew install goenv

To upgrade goenv in the future, use upgrade instead of install.

After installation, you'll need to add eval "$(goenv init -)" to your profile (as stated in the caveats displayed by Homebrew — to display them again, use brew info goenv). You only need to add that to your profile once.

Then follow the rest of the post-installation steps under "Basic GitHub Checkout" above, starting with #4 ("restart your shell so the path changes take effect").

Upgrading

If you've installed goenv using the instructions above, you can upgrade your installation at any time using git.

To upgrade to the latest development version of goenv, use git pull:

$ cd ~/.goenv
$ git pull

To upgrade to a specific release of goenv, check out the corresponding tag:

$ cd ~/.goenv
$ git fetch
$ git tag
v20160417
$ git checkout v20160417

Uninstalling goenv

The simplicity of goenv makes it easy to temporarily disable it, or uninstall from the system.

  1. To disable goenv managing your Go versions, simply remove the goenv init line from your shell startup configuration. This will remove goenv shims directory from PATH, and future invocations like goenv will execute the system Go version, as before goenv.

goenv will still be accessible on the command line, but your Go apps won't be affected by version switching.

  1. To completely uninstall goenv, perform step (1) and then remove its root directory. This will delete all Go versions that were installed under `goenv root`/versions/ directory:

     rm -rf `goenv root`

    If you've installed goenv using a package manager, as a final step perform the goenv package removal. For instance, for Homebrew:

     brew uninstall goenv

Uninstalling Go Versions

As time goes on, you will accumulate Go versions in your ~/.goenv/versions directory.

To remove old Go versions, goenv uninstall command to automate the removal process.

Alternatively, simply rm -rf the directory of the version you want to remove. You can find the directory of a particular Go version with the goenv prefix command, e.g. goenv prefix 1.6.2.