OpenTofu can now be installed via Homebrew.
Let's install it in a few easy steps and use it together with Terragrunt.

Install OpenTofu

First, let's install OpenTofu.

brew install opentofu

tofu -v
OpenTofu v1.6.0-dev
on linux_amd64

Install Terragrunt

Next, let’s install Terragrunt.
With tgenv, we can easily install and manage Terragrunt versions.
Please note to use version 0.52.0 or higher.

brew install tgenv

tgenv install 0.52.0
tgenv use 0.52.0

terragrunt -v
terragrunt version v0.52.0

Configure Terragrunt

Lastly, let's configure Terragrunt.
We can tell Terragrunt to use OpenTofu by setting the TERRAGRUNT_TFPATH environment variable.

echo 'export TERRAGRUNT_TFPATH=tofu' >> ~/.zshrc
source ~/.zshrc

Conclusion

Now, we are all set to use OpenTofu and Terragrunt.
Let's start using them!