OpenTofu v1.9.0 — Release Notes & Engineering Impact

We're proud to announce that OpenTofu 1.9.0 is now officially out! 🎉 This release includes a lot of major and minor new features, as well as a ton of community contributions! The highlights are: * **`for_each` in provider configuration blocks:** An alternate (aka "aliased") provider configuration can now have multiple dynamically-chosen instances using the `for_each` argument: ```hcl provider "aws" { alias = "by_region" for_each = var.aws_regions region = each.key } ``` Each instance of a resource can also potentially select a different instance of the associated provider configuration, making it easier to declare infrastructure that ought to be duplicated for each region. * **`-exclude` planning option:** similar to `-target`, this allows operators to tell OpenTofu to work on only a subset of the objects declared in the configuration or tracked in the state. ```shell tofu plan -exclude=kubernetes_manifest.crds ``` While `-target` specifies the objects to _include_ and skips everything not needed for the selected objects, `-exclude` instead specifies objects to skip. OpenTofu will exclude the selected objects and everything that depends on them. Please take the above for a spin and let us know your feedback! For all the features, see the [related blog post](https://opentofu.org/blog/opentofu-1-9-0/) or the [detailed changelog](https://github.com/opentofu/opentofu/blob/v1.9.0/CHANGELOG.md). You can find the full diff [here](https://github.com/opentofu/opentofu/compare/v1.8...v1.9.0?expand=1).