search

Yleisradio / chtf

Terraform version switcher with automatic install
MIT License
21 stars 4 forks source link
bash fish installer linux macos manage shell terraform terraform-versions versions zsh

readme

chtf - Terraform version switcher

Do you need different Terraform versions on different projects? Or maybe you want to test your modules with a new Terraform version?

chtf is a small shell tool for selecting a specified Terraform version. It can also install the specified version automatically.

Requirements

chtf supports currently bash, zsh, and fish shells. Version switching itself doesn't have any external dependencies.

Optional automatic install of missing Terraform versions requires either:

Installation

Homebrew

On MacOS (and OSX) the easiest way is to use Homebrew. After installing Homebrew, run:

brew install yleisradio/terraforms/chtf

Homebrew also installs the completion for all supported shells.

All systems

Manual installation on all systems:

curl -L -o chtf-2.2.2.tar.gz https://github.com/Yleisradio/chtf/archive/v2.2.2.tar.gz
tar -xzvf chtf-2.2.2.tar.gz
cd chtf-2.2.2/
make install

The default installation location is $HOME/share/chtf/ for bash/zsh, and $HOME/.config/fish/ for fish. See the Tips section for installing to other locations.

The etc/ directory includes completion files for the supported shells. Follow your shell's instructions how to install them. The fish autocompletion is installed for autoloading.

Configuration

The following environment variables can be used for configuring chtf. Click to expand.

CHTF_TERRAFORM_DIR - Specifies where the Terraform versions are stored. Defaults to the Homebrew Caskroom if the "yleisradio/terraforms" Tap is installed, `$HOME/.terraforms/` otherwise. Each version should be installed as `$CHTF_TERRAFORM_DIR/terraform-/terraform`.
CHTF_AUTO_INSTALL - Controls automatic installation missing Terraform versions. Possible values are: `yes`, `no`, and `ask`. The default is `ask`, which will prompt the user for confirmation before automatic installation.
CHTF_AUTO_INSTALL_METHOD - Specifies the method used for automatic installation. The default is `homebrew` if `CHTF_TERRAFORM_DIR` is no specified and the "yleisradio/terraforms" Tap is installed, `zip` otherwise. There shouldn't be normally need to set this variable.

Activating the chtf command

After installing, chtf has to be loaded to the shell.

fish

The fish version is autoloaded so there is nothing more to do!

bash and zsh

The base directory on the following examples depends how and where chtf is installed. This assumes make install. With Homebrew, replace $HOME with the output of brew --prefix.

New shell session has to be started for the changes to take effect.

Add the following to the ~/.bashrc or ~/.zshrc:

######################################################################
# chtf

# Uncomment and change the value to override the default:
#CHTF_AUTO_INSTALL="ask" # yes/no/ask

if [[ -f "$HOME/share/chtf/chtf.sh" ]]; then
    source "$HOME/share/chtf/chtf.sh"
fi

Usage

List all installed Terraform versions:

chtf

Select the wanted Terraform version, for example:

chtf 0.13.5

Use the Terraform version installed globally outside chtf (e.g. via a package manager):

chtf system

Tips

Customized install `make install` installs `chtf` by default to the user's `$HOME` directory. But if installed as a root user (e.g. via `sudo`), the default location is `/usr/local` for system wide use. In both cases the wanted location can be specified with `PREFIX`. For example: sudo make install PREFIX=/opt The development version of `chtf` can be used either by `source`ing or `make install`ing from a [clone of this repository](https://docs.github.com/en/free-pro-team@latest/github/creating-cloning-and-archiving-repositories/cloning-a-repository), or with Homebrew: brew install yleisradio/terraforms/chtf --HEAD
Automatic switching on new shell session If you want to have a default Terraform version selected when starting a new shell session, you can of course add `chtf ` to the config file after loading `chtf`. A bit more flexible way is to write the wanted version number to a file named `~/.terraform-version`, and read that. ```bash # bash and zsh if [[ -f "$HOME/.terraform-version" ]]; then chtf "$(< "$HOME/.terraform-version")" fi ``` ```fish # fish if test -f $HOME/.terraform-version chtf (cat $HOME/.terraform-version) end ```
Uninstalling Terraform versions Homebrew installed Terraform versions can be uninstalled with: brew uninstall --cask terraform- Note that the `` uses dashes instead of dots for versions installed with `chtf` v2.2.0 and newer. Otherwise installed versions can be uninstalled by deleting the directory: rm -r "$CHTF_TERRAFORM_DIR/terraform-"
Uninstalling chtf Homebrew installed `chtf` can be uninstalled with: brew uninstall chtf `chtf` installed with `make` can be uninstalled by deleting the directory: rm -r "$HOME/share/chtf" # or where it was installed

Contributing

Bug reports, pull requests, and other contributions are welcome on GitHub at https://github.com/Yleisradio/chtf.

This project is intended to be a safe, welcoming space for collaboration. By participating in this project you agree to abide by the terms of Contributor Code of Conduct.

Licence and Credits

The project is released as open source under the terms of the MIT License.

Original idea and implementation of chtf was heavily affected by chruby.

Included terraform-installer is released under the Apache 2.0 License.

NOTE: chtf was originally part of the homebrew-terraforms project, but has been extracted to own project and modified to support also non-Homebrew environments.