I’ve blogged previously about my tinkering with my own Terraform provider for fetching external IPs
One of the more fiddly parts I found when using a custom provider is how to use it with the rest of your Terraform code. You could either bundle it with [terraform-bundle](), or add it as git submodules to the repo you run your code in.
Neither are particularly ideal, as you’re either having to create a new bundle every time a new release occurs or have to wrangle with git submodules and increase the site of your code repository by containing binaries.
