cornet/direnv_terraform.md

## direnv_terraform.md

      
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              direnv_terraform.md
            
          
    Direnv Setup

First download the required versions of terraform and terragrunt to the following directory structure:
~/terraform/0.12/terraform   # v0.12.5
~/terraform/0.12/terragrunt  # v0.19
~/terraform/0.11/terraform   # v0.11.8
~/terraform/0.11/terragrunt  # v0.18

Install direnv

brew install direnv

Add shell hooks

For bash:
echo 'eval "$(direnv hook bash)"' >> ~/.bashrc

For zsh:
echo 'eval "$(direnv hook zsh)"'  >> ~/.zshrc

Add functions for switching

Create ~/.direnvrc with the following content:
layout_tf12() {
  PATH_add "${HOME}/terraform/0.12"
}

layout_tf11() {
  PATH_add "${HOME}/terraform/0.11"
} 

Then to auto switch between terraform versions you can create a .envrc file in your project with either
layout_tf12

or
layout_tf11

depending on the version you require.